rishi/scryer-prolog
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scryer-prolog/src/tests.rs

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Rust
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use prolog_parser::ast::parsing_stream;
use prolog::heap_print::*;
use prolog::machine::*;
use prolog::machine::compile::*;
use prolog::machine::machine_errors::*;
use prolog::machine::machine_indices::*;
use prolog::machine::toplevel::*;
use prolog::read::readline;
use std::collections::HashSet;
use std::mem::swap;
use std::ops::{Range, RangeFrom};
pub struct TestOutputter {
results: Vec<HashSet<String>>,
contents: HashSet<String>,
focus: String
}
impl TestOutputter {
fn cache(&mut self) {
self.begin_new_var();
let mut contents = HashSet::new();
swap(&mut contents, &mut self.contents);
self.results.push(contents);
}
}
impl HCValueOutputter for TestOutputter {
type Output = Vec<HashSet<String>>;
fn new() -> Self {
TestOutputter { results: vec![],
contents: HashSet::new(),
focus: String::new() }
}
fn append(&mut self, focus: &str) {
self.focus += focus;
}
fn push_char(&mut self, c: char) {
self.focus.push(c);
}
fn begin_new_var(&mut self) {
if !self.focus.is_empty() {
let mut focus = String::new();
swap(&mut focus, &mut self.focus);
self.contents.insert(focus);
}
}
fn insert(&mut self, idx: usize, c: char) {
self.focus.insert(idx, c);
}
fn result(self) -> Self::Output {
self.results
}
fn ends_with(&self, s: &str) -> bool {
self.focus.ends_with(s)
}
fn len(&self) -> usize {
self.focus.len()
}
fn truncate(&mut self, len: usize) {
self.focus.truncate(len);
}
fn range(&self, index: Range<usize>) -> &str {
&self.focus.as_str()[index]
}
fn range_from(&self, index: RangeFrom<usize>) -> &str {
&self.focus.as_str()[index]
}
}
pub fn collect_test_output(wam: &mut Machine, alloc_locs: AllocVarDict) -> Vec<HashSet<String>>
{
let mut output = TestOutputter::new();
output = wam.test_heap_view(output);
output.cache();
while let EvalSession::SubsequentQuerySuccess = wam.continue_query(&alloc_locs) {
output = wam.test_heap_view(output);
output.cache();
}
output.result()
}
pub fn collect_test_output_with_limit(wam: &mut Machine, alloc_locs: AllocVarDict, limit: usize)
-> Vec<HashSet<String>>
{
let mut output = TestOutputter::new();
output = wam.test_heap_view(output);
output.cache();
let mut count = 1;
if count == limit {
return output.result();
}
while let EvalSession::SubsequentQuerySuccess = wam.continue_query(&alloc_locs)
{
output = wam.test_heap_view(output);
output.cache();
count += 1;
if count == limit {
break;
}
}
output.result()
}
#[allow(dead_code)]
pub fn submit(wam: &mut Machine, buffer: &str) -> bool
{
wam.reset();
match submit_code(wam, buffer) {
EvalSession::InitialQuerySuccess(_) |
EvalSession::EntrySuccess |
EvalSession::SubsequentQuerySuccess =>
true,
_ => false
}
}
#[allow(dead_code)]
pub fn submit_query(wam: &mut Machine, buffer: &str, result: Vec<HashSet<String>>) -> bool
{
wam.reset();
match stream_to_toplevel(parsing_stream(buffer.as_bytes()), wam) {
Ok(term) =>
match compile_term(wam, term) {
EvalSession::InitialQuerySuccess(alloc_locs) =>
result == collect_test_output(wam, alloc_locs),
EvalSession::EntrySuccess => true,
_ => false
},
Err(_) => panic!("syntax error")
}
}
#[allow(dead_code)]
pub fn submit_query_without_results(wam: &mut Machine, buffer: &str) -> bool
{
wam.reset();
match stream_to_toplevel(parsing_stream(buffer.as_bytes()), wam) {
Ok(term) =>
match compile_term(wam, term) {
EvalSession::InitialQuerySuccess(..)
| EvalSession::EntrySuccess => true,
_ => false
},
Err(_) => panic!("syntax error")
}
}
#[allow(dead_code)]
pub fn submit_query_with_limit(wam: &mut Machine, buffer: &str,
result: Vec<HashSet<String>>, limit: usize)
-> bool
{
wam.reset();
match stream_to_toplevel(parsing_stream(buffer.as_bytes()), wam) {
Ok(term) =>
match compile_term(wam, term) {
EvalSession::InitialQuerySuccess(alloc_locs) =>
result == collect_test_output_with_limit(wam, alloc_locs, limit),
EvalSession::EntrySuccess => true,
_ => false
},
Err(_) => panic!("syntax_error")
}
}
#[allow(dead_code)]
pub fn submit_code(wam: &mut Machine, buf: &str) -> EvalSession {
compile_user_module(wam, parsing_stream(buf.as_bytes()))
}
#[allow(unused_macros)]
macro_rules! expand_strs {
($arr:expr) => (
$arr.into_iter().map(|s| String::from(*s)).collect()
)
}
#[allow(unused_macros)]
macro_rules! assert_prolog_success_with_limit {
($wam:expr, $buf:expr, [$($res:expr),*], $limit:expr) => (
assert!(submit_query_with_limit($wam, $buf, vec![$(expand_strs!($res)),*], $limit))
)
}
#[allow(unused_macros)]
macro_rules! assert_prolog_failure {
($wam: expr, $buf: expr) => (
assert_eq!(submit_query_without_results($wam, $buf), false)
)
}
#[allow(unused_macros)]
macro_rules! assert_prolog_success {
($wam:expr, $query:expr, [$($res:expr),*]) => (
assert!(submit_query($wam, $query, vec![$(expand_strs!($res)),*]))
);
($wam:expr, $buf:expr) => (
assert_eq!(submit_query_without_results($wam, $buf), true)
)
}
#[test]
fn test_queries_on_facts()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, "p(Z, Z).");
submit(&mut wam, "clouds(are, nice).");
assert_prolog_success!(&mut wam, "p(Z, Z).", [["Z = _0"]]);
assert_prolog_success!(&mut wam, "p(Z, z).", [["Z = z"]]);
assert_prolog_success!(&mut wam, "p(Z, w).", [["Z = w"]]);
assert_prolog_failure!(&mut wam, "p(z, w).");
assert_prolog_success!(&mut wam, "p(w, w).");
assert_prolog_failure!(&mut wam, "clouds(Z, Z).");
assert_prolog_success!(&mut wam, "clouds(are, Z).", [["Z = nice"]]);
assert_prolog_success!(&mut wam, "clouds(Z, nice).", [["Z = are"]]);
submit(&mut wam, "p(Z, h(Z, W), f(W)).");
assert_prolog_failure!(&mut wam, "p(z, h(z, z), f(w)).");
assert_prolog_success!(&mut wam, "p(z, h(z, w), f(w)).");
assert_prolog_success!(&mut wam, "p(z, h(z, W), f(w)).", [["W = w"]]);
assert_prolog_success!(&mut wam, "p(Z, h(Z, w), f(Z)).", [["Z = w"]]);
assert_prolog_failure!(&mut wam, "p(z, h(Z, w), f(Z)).");
submit(&mut wam, "p(f(X), h(Y, f(a)), Y).");
assert_prolog_success!(&mut wam, "p(Z, h(Z, W), f(W)).", [["W = f(a)", "Z = f(f(a))"]]);
}
#[test]
fn test_queries_on_rules() {
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, "p(X, Y) :- q(X, Z), r(Z, Y).");
submit(&mut wam, "q(q, s).");
submit(&mut wam, "r(s, t).");
assert_prolog_success!(&mut wam, "p(X, Y).", [["Y = t", "X = q"]]);
assert_prolog_success!(&mut wam, "p(q, t).");
assert_prolog_failure!(&mut wam, "p(t, q).");
assert_prolog_success!(&mut wam, "p(q, T).", [["T = t"]]);
assert_prolog_failure!(&mut wam, "p(t, t).");
submit(&mut wam, "p(X, Y) :- q(f(f(X)), R), r(S, T).");
submit(&mut wam, "q(f(f(X)), r).");
assert_prolog_success!(&mut wam, "p(X, Y).", [["X = _0", "Y = _1"]]);
submit(&mut wam, "q(f(f(x)), r).");
assert_prolog_success!(&mut wam, "p(X, Y).", [["X = x", "Y = _1"]]);
submit(&mut wam, "p(X, Y) :- q(X, Y), r(X, Y).");
submit(&mut wam, "q(s, t).");
submit(&mut wam, "r(X, Y) :- r(a).");
submit(&mut wam, "r(a).");
assert_prolog_success!(&mut wam, "p(X, Y).", [["X = s", "Y = t"]]);
assert_prolog_failure!(&mut wam, "p(t, S).");
assert_prolog_success!(&mut wam, "p(s, T).", [["T = t"]]);
assert_prolog_success!(&mut wam, "p(S, t).", [["S = s"]]);
submit(&mut wam, "p(f(f(a), g(b), X), g(b), h) :- q(X, Y).");
submit(&mut wam, "q(X, Y).");
assert_prolog_success!(&mut wam, "p(f(X, Y, Z), g(b), h).",
[["Z = _3", "Y = g(b)", "X = f(a)"]]);
assert_prolog_failure!(&mut wam, "p(f(X, g(Y), Z), g(Z), X).");
assert_prolog_success!(&mut wam, "p(f(X, g(Y), Z), g(Z), h).",
[["Z = b", "Y = b", "X = f(a)"]]);
assert_prolog_success!(&mut wam, "p(Z, Y, X).",
[["X = h", "Y = g(b)", "Z = f(f(a),g(b),_7)"]]);
assert_prolog_success!(&mut wam, "p(f(X, Y, Z), Y, h).",
[["Y = g(b)", "Z = _3", "X = f(a)"]]);
submit(&mut wam, "p(_, f(_, Y, _)) :- h(Y).");
submit(&mut wam, "h(y).");
assert_prolog_success!(&mut wam, "p(_, f(_, Y, _)).", [["Y = y"]]);
assert_prolog_success!(&mut wam, "p(_, f(_, y, _)).");
assert_prolog_failure!(&mut wam, "p(_, f(_, z, _)).");
}
#[test]
fn test_queries_on_predicates() {
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, "p(X, a). p(b, X).");
assert_prolog_success!(&mut wam, "p(x, Y).", [["Y = a"]]);
assert_prolog_success!(&mut wam, "p(X, a).", [["X = _0"], // 1st case
["X = b"]]); // 2nd case.
assert_prolog_success!(&mut wam, "p(b, X).", [["X = a"], // 1st case
["X = _0"]]); // 2nd case.
assert_prolog_success!(&mut wam, "p(X, X).", [["X = a"],
["X = b"]]);
assert_prolog_success!(&mut wam, "p(b, a).");
assert_prolog_failure!(&mut wam, "p(a, b).");
submit(&mut wam, "p(X, Y, a). p(X, a, Y). p(X, Y, a).");
assert_prolog_success!(&mut wam, "p(c, d, X).", [["X = a"],
["X = a"]]);
assert_prolog_success!(&mut wam, "p(a, a, a).");
assert_prolog_failure!(&mut wam, "p(b, c, d).");
submit(&mut wam, "p(X, a). p(X, Y) :- q(Z), p(X, X).");
assert_prolog_success!(&mut wam, "p(X, Y).", [["X = _0", "Y = a"]]);
assert_prolog_success!(&mut wam, "p(x, a).");
assert_prolog_success!(&mut wam, "p(X, a).", [["X = _0"]]);
assert_prolog_failure!(&mut wam, "p(X, b).");
submit(&mut wam, "q(z).");
assert_prolog_success_with_limit!(&mut wam, "p(X, b).", [["X = a"],
["X = a"],
["X = a"]],
3);
assert_prolog_success!(&mut wam, "p(x, a).");
assert_prolog_success_with_limit!(&mut wam, "p(X, Y).", [["X = _0", "Y = a"],
["Y = _1", "X = a"],
["Y = _1", "X = a"]],
3);
submit(&mut wam, "p(X, a). p(X, Y) :- q(Y), p(X, X).");
assert_prolog_success_with_limit!(&mut wam, "p(X, Y).", [["X = _0", "Y = a"],
["Y = z", "X = a"]],
2);
assert_prolog_failure!(&mut wam, "p(X, b).");
submit(&mut wam, "p(a, z). p(X, Y) :- q(Y), p(X, Y).");
assert_prolog_success_with_limit!(&mut wam, "p(X, Y).", [["X = a", "Y = z"],
["X = a", "Y = z"]],
2);
assert_prolog_success_with_limit!(&mut wam, "p(X, z).", [["X = a"],
["X = a"]],
2);
assert_prolog_success!(&mut wam, "p(a, z).");
assert_prolog_success_with_limit!(&mut wam, "p(a, X).", [["X = z"],
["X = z"]],
2);
assert_prolog_failure!(&mut wam, "p(b, a).");
submit(&mut wam, "p(X, Y, Z) :- q(X), r(Y), s(Z).
p(a, b, Z) :- q(Z).");
submit(&mut wam, "q(x).");
submit(&mut wam, "r(y).");
submit(&mut wam, "s(z).");
assert_prolog_success!(&mut wam, "p(X, Y, Z).", [["Y = y", "X = x", "Z = z"],
["Y = b", "X = a", "Z = x"]]);
assert_prolog_failure!(&mut wam, "p(a, b, c).");
assert_prolog_success!(&mut wam, "p(a, b, C).", [["C = x"]]);
submit(&mut wam, "p(X) :- r(X).");
submit(&mut wam, "r(X) :- s(X, t). r(X) :- t(X, u).");
submit(&mut wam, "s(x, t).");
submit(&mut wam, "t(y, u).");
assert_prolog_success!(&mut wam, "p(X).", [["X = x"],
["X = y"]]);
assert_prolog_success!(&mut wam, "p(x).");
assert_prolog_success!(&mut wam, "p(y).");
assert_prolog_failure!(&mut wam, "p(z).");
submit(&mut wam, "p(f(f(X)), h(W), Y) :- g(W), h(W), f(X).
p(X, Y, Z) :- h(Y), g(W), z(Z).");
submit(&mut wam, "g(f(X)) :- z(X). g(X) :- h(X).");
submit(&mut wam, "h(w). h(x). h(z).");
submit(&mut wam, "f(s).");
submit(&mut wam, "z(Z).");
assert_prolog_success!(&mut wam, "p(X, Y, Z).", [["Y = h(w)", "X = f(f(s))", "Z = _2"],
["Y = h(x)", "X = f(f(s))", "Z = _2"],
["Y = h(z)", "X = f(f(s))", "Z = _2"],
["Y = w", "Z = _2", "X = _0"],
["Y = w", "Z = _2", "X = _0"],
["Y = w", "Z = _2", "X = _0"],
["Y = w", "Z = _2", "X = _0"],
["Y = x", "Z = _2", "X = _0"],
["Y = x", "Z = _2", "X = _0"],
["Y = x", "Z = _2", "X = _0"],
["Y = x", "Z = _2", "X = _0"],
["Y = z", "Z = _2", "X = _0"],
["Y = z", "Z = _2", "X = _0"],
["Y = z", "Z = _2", "X = _0"],
["Y = z", "Z = _2", "X = _0"]]);
assert_prolog_success!(&mut wam, "p(X, X, Z).", [["Z = _1", "X = w"],
["Z = _1", "X = w"],
["Z = _1", "X = w"],
["Z = _1", "X = w"],
["Z = _1", "X = x"],
["Z = _1", "X = x"],
["Z = _1", "X = x"],
["Z = _1", "X = x"],
["Z = _1", "X = z"],
["Z = _1", "X = z"],
["Z = _1", "X = z"],
["Z = _1", "X = z"]]);
assert_prolog_success!(&mut wam, "p(f(f(Z)), Y, Z).", [["Y = h(w)", "Z = s"],
["Y = h(x)", "Z = s"],
["Y = h(z)", "Z = s"],
["Y = w", "Z = _1"],
["Y = w", "Z = _1"],
["Y = w", "Z = _1"],
["Y = w", "Z = _1"],
["Y = x", "Z = _1"],
["Y = x", "Z = _1"],
["Y = x", "Z = _1"],
["Y = x", "Z = _1"],
["Y = z", "Z = _1"],
["Y = z", "Z = _1"],
["Y = z", "Z = _1"],
["Y = z", "Z = _1"]]);
assert_prolog_success!(&mut wam, "p(X, X, X).", [["X = w"],
["X = w"],
["X = w"],
["X = w"],
["X = x"],
["X = x"],
["X = x"],
["X = x"],
["X = z"],
["X = z"],
["X = z"],
["X = z"]]);
assert_prolog_success!(&mut wam, "p(X, Y, X).", [["Y = h(w)", "X = f(f(s))"],
["Y = h(x)", "X = f(f(s))"],
["Y = h(z)", "X = f(f(s))"],
["Y = w", "X = _0"],
["Y = w", "X = _0"],
["Y = w", "X = _0"],
["Y = w", "X = _0"],
["Y = x", "X = _0"],
["Y = x", "X = _0"],
["Y = x", "X = _0"],
["Y = x", "X = _0"],
["Y = z", "X = _0"],
["Y = z", "X = _0"],
["Y = z", "X = _0"],
["Y = z", "X = _0"]]);
assert_prolog_failure!(&mut wam, "p(f(f(X)), h(f(X)), Y).");
submit(&mut wam, "p(X) :- f(Y), g(Y), i(X, Y).");
submit(&mut wam, "g(f(a)). g(f(b)). g(f(c)).");
submit(&mut wam, "f(f(a)). f(f(b)). f(f(c)).");
submit(&mut wam, "i(X, X).");
assert_prolog_success!(&mut wam, "p(X).", [["X = f(a)"],
["X = f(b)"],
["X = f(c)"]]);
submit(&mut wam, "p(X) :- f(f(Y)), g(Y, f(Y)), i(X, f(Y)).");
submit(&mut wam, "g(Y, f(Y)) :- g(f(Y)).");
assert_prolog_success!(&mut wam, "p(X).", [["X = f(a)"],
["X = f(b)"],
["X = f(c)"]]);
}
#[test]
fn test_queries_on_cuts() {
let mut wam = Machine::new(readline::input_stream());
// test shallow cuts.
submit(&mut wam, "memberchk(X, [X|_]) :- !.
memberchk(X, [_|Xs]) :- memberchk(X, Xs).");
assert_prolog_success!(&mut wam, "memberchk(X, [a,b,c]).", [["X = a"]]);
assert_prolog_success!(&mut wam, "memberchk([X,X], [a,b,c,[d,e],[d,d]]).", [["X = d"]]);
assert_prolog_success!(&mut wam, "memberchk([X,X], [a,b,c,[D,d],[e,e]]).", [["X = d", "D = d"]]);
assert_prolog_failure!(&mut wam, "memberchk([X,X], [a,b,c,[e,d],[f,e]]).");
assert_prolog_failure!(&mut wam, "memberchk([X,X,Y], [a,b,c,[e,d],[f,e]]).");
assert_prolog_success!(&mut wam, "memberchk([X,X,Y], [a,b,c,[e,e,d],[f,e]]).", [["X = e", "Y = d"]]);
// test deep cuts.
submit(&mut wam, "commit :- a, !.");
assert_prolog_failure!(&mut wam, "commit.");
submit(&mut wam, "a.");
assert_prolog_success!(&mut wam, "commit.");
submit(&mut wam, "commit(X) :- a(X), !.");
assert_prolog_failure!(&mut wam, "commit(X).");
submit(&mut wam, "a(x).");
assert_prolog_success!(&mut wam, "commit(X).", [["X = x"]]);
submit(&mut wam, "a :- b, !, c. a :- d.");
assert_prolog_failure!(&mut wam, "a.");
submit(&mut wam, "b.");
assert_prolog_failure!(&mut wam, "a.");
submit(&mut wam, "d.");
// we've committed to the first clause since the query on b
// succeeds, so we expect failure here.
assert_prolog_failure!(&mut wam, "a.");
submit(&mut wam, "c.");
assert_prolog_success!(&mut wam, "a.");
submit(&mut wam, "a(X) :- b, !, c(X). a(X) :- d(X).");
assert_prolog_failure!(&mut wam, "a(X).");
submit(&mut wam, "c(c).");
submit(&mut wam, "d(d).");
assert_prolog_success!(&mut wam, "a(X).", [["X = c"]]);
submit(&mut wam, "b.");
assert_prolog_success!(&mut wam, "a(X).", [["X = c"]]);
}
#[test]
fn test_queries_on_lists()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, "p([Z, W]).");
assert_prolog_success!(&mut wam, "p([Z, Z]).", [["Z = _0"]]);
assert_prolog_failure!(&mut wam, "p([Z, W, Y]).");
assert_prolog_success!(&mut wam, "p([Z | W]).", [["Z = _0", "W = [_3]"]]);
assert_prolog_success!(&mut wam, "p([Z | [Z]]).", [["Z = _0"]]);
assert_prolog_success!(&mut wam, "p([Z | [W]]).", [["Z = _2", "W = _0"]]);
assert_prolog_failure!(&mut wam, "p([Z | []]).");
submit(&mut wam, "p([Z, Z]).");
assert_prolog_success!(&mut wam, "p([Z, Z]).", [["Z = _0"]]);
assert_prolog_failure!(&mut wam, "p([Z, W, Y]).");
assert_prolog_success!(&mut wam, "p([Z | W]).", [["Z = _0", "W = [_0]"]]);
assert_prolog_success!(&mut wam, "p([Z | [Z]]).", [["Z = _0"]]);
assert_prolog_success!(&mut wam, "p([Z | [W]]).", [["Z = _0", "W = _0"]]);
assert_prolog_failure!(&mut wam, "p([Z | []]).");
submit(&mut wam, "p([Z]).");
assert_prolog_failure!(&mut wam, "p([Z, Z]).");
assert_prolog_failure!(&mut wam, "p([Z, W, Y]).");
assert_prolog_success!(&mut wam, "p([Z | W]).", [["W = []", "Z = _0"]]);
assert_prolog_failure!(&mut wam, "p([Z | [Z]]).");
assert_prolog_failure!(&mut wam, "p([Z | [W]]).");
assert_prolog_success!(&mut wam, "p([Z | []]).", [["Z = _0"]]);
submit(&mut wam, "member(X, [X|_]).
member(X, [_|Xs]) :- member(X, Xs).");
assert_prolog_failure!(&mut wam, "member(a, [c, [X, Y]]).");
assert_prolog_failure!(&mut wam, "member(c, [a, [X, Y]]).");
assert_prolog_success!(&mut wam, "member(a, [a, [X, Y]]).", [["X = _2", "Y = _0"]]);
assert_prolog_success!(&mut wam, "member(a, [X, Y, Z]).", [["Y = _2", "X = a", "Z = _0"],
["Y = a", "X = _4", "Z = _0"],
["Y = _2", "X = _4", "Z = a"]]);
assert_prolog_success!(&mut wam, "member([X, X], [a, [X, Y]]).", [["X = _0", "Y = _0"]]);
assert_prolog_success!(&mut wam, "member([X, X], [a, [b, c], [b, b], [Z, x], [d, f]]).",
[["Z = _14", "X = b"],
["Z = x", "X = x"]]);
assert_prolog_failure!(&mut wam, "member([X, X], [a, [b, c], [b, d], [foo, x], [d, f]]).");
assert_prolog_success!(&mut wam, "member([X, Y], [a, [b, c], [b, b], [Z, x], [d, f]]).",
[["X = b", "Y = c", "Z = _14"],
["X = b", "Y = b", "Z = _14"],
["X = _2", "Y = x", "Z = _2"],
["X = d", "Y = f", "Z = _14"]]);
assert_prolog_failure!(&mut wam, "member([X, Y, Y], [a, [b, c], [b, b], [Z, x], [d, f]]).");
assert_prolog_failure!(&mut wam, "member([X, Y, Z], [a, [b, c], [b, b], [Z, x], [d, f]]).");
}
#[test]
fn test_queries_on_conjuctive_queries() {
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, "p(a, b).");
submit(&mut wam, "q(b, c).");
assert_prolog_success!(&mut wam, "p(X, Y), q(Y, Z).", [["X = a", "Z = c", "Y = b"]]);
assert_prolog_failure!(&mut wam, "p(X, Y), q(Y, X).");
submit(&mut wam, "p(a, [f(g(X))]).");
submit(&mut wam, "q(Y, c).");
assert_prolog_success!(&mut wam, "p(X, Y), q(Y, Z).", [["Y = [f(g(_9))]", "X = a", "Z = c"]]);
assert_prolog_failure!(&mut wam, "p(X, Y), q(Y, X).");
submit(&mut wam, "member(X, [X|_]).
member(X, [_|Xs]) :- member(X, Xs).");
assert_prolog_success!(&mut wam, "member(X, [a,b,c]), member(X, [a,b,c]).",
[["X = a"],
["X = b"],
["X = c"]]);
assert_prolog_success!(&mut wam, "member(X, [a,b,c]), member(X, [b,c]).",
[["X = b"],
["X = c"]]);
assert_prolog_success!(&mut wam, "member(X, [a,c]), member(X, [b,c]).",
[["X = c"]]);
assert_prolog_success!(&mut wam, "member(X, [a,b,c,d]), !, member(X, [a,d]).",
[["X = a"]]);
assert_prolog_failure!(&mut wam, "member(X, [a,b,c,d]), !, member(X, [e]).");
assert_prolog_success!(&mut wam, "member([X,X],[a,b,c,[d,d],[e,d]]),
member(X, [a,b,c,d,e,f,g]),
member(Y, [X, a, b, c, d]).",
[["X = d", "Y = d"],
["X = d", "Y = a"],
["X = d", "Y = b"],
["X = d", "Y = c"],
["X = d", "Y = d"]]);
submit(&mut wam, "p(a, [f(g(X))]). p(X, c) :- c.");
submit(&mut wam, "c.");
submit(&mut wam, "q(Y, c).");
assert_prolog_success!(&mut wam, "p(X, Y), q(Y, Z).",
[["X = a", "Z = c", "Y = [f(g(_9))]"],
["X = _0", "Z = c", "Y = c"]]);
assert_prolog_success!(&mut wam, "p(X, Y), !, q(Y, Z).",
[["Z = c", "Y = [f(g(_9))]", "X = a"]]);
submit(&mut wam, "q([f(g(x))], Z). q([f(g(y))], Y). q([f(g(z))], a).");
assert_prolog_success!(&mut wam, "p(X, Y), q(Y, Z).",
[["Z = _11", "X = a", "Y = [f(g(x))]"],
["Z = _11", "X = a", "Y = [f(g(y))]"],
["Z = a", "X = a", "Y = [f(g(z))]"]]);
assert_prolog_success!(&mut wam, "p(X, Y), !, q(Y, Z).",
[["X = a", "Y = [f(g(x))]", "Z = _11"],
["X = a", "Y = [f(g(y))]", "Z = _11"],
["X = a", "Y = [f(g(z))]", "Z = a"]]);
assert_prolog_success!(&mut wam, "p(X, Y), !, q(Y, X).",
[["X = a", "Y = [f(g(x))]"],
["X = a", "Y = [f(g(y))]"],
["X = a", "Y = [f(g(z))]"]]);
submit(&mut wam, "p(X, [f(g(x))]). p(X, [f(g(y))]). p(X, [f(g(z))]).");
assert_prolog_failure!(&mut wam, "q(f(X), Y), p(X, Y).");
assert_prolog_success!(&mut wam, "q(X, Y), p(X, Y).",
[["Y = [f(g(x))]", "X = [f(g(x))]"],
["Y = [f(g(y))]", "X = [f(g(x))]"],
["Y = [f(g(z))]", "X = [f(g(x))]"],
["Y = [f(g(x))]", "X = [f(g(y))]"],
["Y = [f(g(y))]", "X = [f(g(y))]"],
["Y = [f(g(z))]", "X = [f(g(y))]"]]);
assert_prolog_success!(&mut wam, "p(X, Y), q(X, Y).",
[["Y = [f(g(x))]", "X = [f(g(x))]"],
["Y = [f(g(x))]", "X = [f(g(y))]"],
["Y = [f(g(y))]", "X = [f(g(x))]"],
["Y = [f(g(y))]", "X = [f(g(y))]"],
["Y = [f(g(z))]", "X = [f(g(x))]"],
["Y = [f(g(z))]", "X = [f(g(y))]"]]);
assert_prolog_success!(&mut wam, "p(X, Y), q(Y, X).",
[["Y = [f(g(x))]", "X = _10"],
["Y = [f(g(y))]", "X = _10"],
["Y = [f(g(z))]", "X = a"]]);
assert_prolog_success!(&mut wam, "q(X, Y), p(Y, X).",
[["Y = _9", "X = [f(g(x))]"],
["Y = _9", "X = [f(g(y))]"],
["Y = a" , "X = [f(g(z))]"]]);
}
#[test]
fn test_queries_on_call_n()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, "maplist(_, []).
maplist(P, [X|Xs]) :- call(P, X), maplist(P, Xs).");
submit(&mut wam, "f(a). f(b). f(c).");
assert_prolog_success!(&mut wam, "maplist(f, [X,Y,Z]).",
[["X = a", "Y = a", "Z = a"],
["X = a", "Y = a", "Z = b"],
["X = a", "Y = a", "Z = c"],
["X = a", "Y = b", "Z = a"],
["X = a", "Y = b", "Z = b"],
["X = a", "Y = b", "Z = c"],
["X = a", "Y = c", "Z = a"],
["X = a", "Y = c", "Z = b"],
["X = a", "Y = c", "Z = c"],
["X = b", "Y = a", "Z = a"],
["X = b", "Y = a", "Z = b"],
["X = b", "Y = a", "Z = c"],
["X = b", "Y = b", "Z = a"],
["X = b", "Y = b", "Z = b"],
["X = b", "Y = b", "Z = c"],
["X = b", "Y = c", "Z = a"],
["X = b", "Y = c", "Z = b"],
["X = b", "Y = c", "Z = c"],
["X = c", "Y = a", "Z = a"],
["X = c", "Y = a", "Z = b"],
["X = c", "Y = a", "Z = c"],
["X = c", "Y = b", "Z = a"],
["X = c", "Y = b", "Z = b"],
["X = c", "Y = b", "Z = c"],
["X = c", "Y = c", "Z = a"],
["X = c", "Y = c", "Z = b"],
["X = c", "Y = c", "Z = c"]]);
assert_prolog_success!(&mut wam, "maplist(f, [a,Y,Z]).",
[["Y = a", "Z = a"],
["Y = a", "Z = b"],
["Y = a", "Z = c"],
["Y = b", "Z = a"],
["Y = b", "Z = b"],
["Y = b", "Z = c"],
["Y = c", "Z = a"],
["Y = c", "Z = b"],
["Y = c", "Z = c"]]);
assert_prolog_success!(&mut wam, "maplist(f, [X,a,b]).",
[["X = a"],
["X = b"],
["X = c"]]);
assert_prolog_success!(&mut wam, "maplist(f, [c,a,b]).");
assert_prolog_failure!(&mut wam, "maplist(f, [d,e,f]).");
assert_prolog_success!(&mut wam, "maplist(f, []).");
assert_prolog_failure!(&mut wam, "maplist(f(X), [a,b,c]).");
submit(&mut wam, "f(X) :- call(X), call(X).");
submit(&mut wam, "p(x). p(y).");
assert_prolog_failure!(&mut wam, "f(p).");
assert_prolog_success!(&mut wam, "f(p(X)).", [["X = x"],
["X = y"]]);
assert_prolog_success!(&mut wam, "f(p(x)).");
assert_prolog_failure!(&mut wam, "f(p(w)).");
assert_prolog_failure!(&mut wam, "f(p(X, Y)).");
submit(&mut wam, "f(P) :- call(P, X), call(P, Y).");
assert_prolog_success!(&mut wam, "f(p).");
assert_prolog_failure!(&mut wam, "f(non_existent).");
submit(&mut wam, "f(P, X, Y) :- call(P, X), call(P, Y).");
assert_prolog_success!(&mut wam, "f(p, X, Y).", [["Y = x", "X = x"],
["Y = y", "X = x"],
["Y = x", "X = y"],
["Y = y", "X = y"]]);
assert_prolog_success!(&mut wam, "f(p, x, Y).", [["Y = x"],
["Y = y"]]);
assert_prolog_success!(&mut wam, "f(p, X, y).", [["X = x"],
["X = y"]]);
assert_prolog_success!(&mut wam, "f(p, x, y).");
assert_prolog_failure!(&mut wam, "f(p, X, z).");
assert_prolog_failure!(&mut wam, "f(p, z, Y).");
assert_prolog_success!(&mut wam, "call(p, X).", [["X = x"],
["X = y"]]);
assert_prolog_success!(&mut wam, "call(p, x).");
assert_prolog_success!(&mut wam, "call(p, y).");
assert_prolog_failure!(&mut wam, "call(p, z).");
submit(&mut wam, "r(f(X)) :- p(X). r(g(Y)) :- p(Y).");
assert_prolog_success!(&mut wam, "f(r, X, Y).",
[["X = f(x)", "Y = f(x)"],
["X = f(x)", "Y = f(y)"],
["X = f(x)", "Y = g(x)"],
["X = f(x)", "Y = g(y)"],
["X = f(y)", "Y = f(x)"],
["X = f(y)", "Y = f(y)"],
["X = f(y)", "Y = g(x)"],
["X = f(y)", "Y = g(y)"],
["X = g(x)", "Y = f(x)"],
["X = g(x)", "Y = f(y)"],
["X = g(x)", "Y = g(x)"],
["X = g(x)", "Y = g(y)"],
["X = g(y)", "Y = f(x)"],
["X = g(y)", "Y = f(y)"],
["X = g(y)", "Y = g(x)"],
["X = g(y)", "Y = g(y)"]]);
assert_prolog_success!(&mut wam, "f(r, X, X).",
[["X = f(x)"],
["X = f(y)"],
["X = g(x)"],
["X = g(y)"]]);
assert_prolog_success!(&mut wam, "f(r, f(X), g(Y)).",
[["X = x", "Y = x"],
["X = x", "Y = y"],
["X = y", "Y = x"],
["X = y", "Y = y"]]);
assert_prolog_failure!(&mut wam, "f(r, j(X), h(Y)).");
submit(&mut wam, "p(one, one). p(one, two). p(two, two).");
assert_prolog_success!(&mut wam, "f(p(one), X, Y).",
[["X = one", "Y = one"],
["X = one", "Y = two"],
["X = two", "Y = one"],
["X = two", "Y = two"]]);
assert_prolog_success!(&mut wam, "f(p(one), X, X).",
[["X = one"],
["X = two"]]);
assert_prolog_success!(&mut wam, "f(p(one), one, Y).",
[["Y = one"],
["Y = two"]]);
assert_prolog_success!(&mut wam, "f(p(one), one, two).");
assert_prolog_failure!(&mut wam, "f(p(one), one, three).");
assert_prolog_failure!(&mut wam, "f(p(two), one, two).");
assert_prolog_failure!(&mut wam, "f(p(two), two, one).");
assert_prolog_success!(&mut wam, "f(p(two), two, two).");
assert_prolog_failure!(&mut wam, "f(p(two), two, three).");
assert_prolog_failure!(&mut wam, "f(p(three), X, Y).");
assert_prolog_failure!(&mut wam, "f(p(three), X, X).");
assert_prolog_failure!(&mut wam, "f(p(three), one, Y).");
assert_prolog_failure!(&mut wam, "f(p(three), one, two).");
assert_prolog_failure!(&mut wam, "f(p(three), one, three).");
submit(&mut wam, "f(P, X) :- call(P, X).");
assert_prolog_success!(&mut wam, "f(p(one), one).");
assert_prolog_success!(&mut wam, "f(p(two), two).");
assert_prolog_failure!(&mut wam, "f(p(two), one).");
assert_prolog_failure!(&mut wam, "f(p(three), one).");
assert_prolog_failure!(&mut wam, "f(p(one), three).");
assert_prolog_failure!(&mut wam, "f(p(two), three).");
submit(&mut wam, "p(f(g(X)), compound, [lists,are,good]).");
assert_prolog_success!(&mut wam, "call(p(f(g(X))),Y,Z).",
[["Y = compound","Z = [lists,are,good]","X = _3"]]);
submit(&mut wam, "david_lynch(coffee).
david_lynch(pie).
david_lynch(kyle(Film)) :- kyle(Film).");
submit(&mut wam, "kyle(dune).
kyle(blue_velvet).
kyle(showgirls).
kyle(flintstones).");
assert_prolog_success!(&mut wam, "call(david_lynch,X).",
[["X = coffee"],
["X = pie"],
["X = kyle(dune)"],
["X = kyle(blue_velvet)"],
["X = kyle(showgirls)"],
["X = kyle(flintstones)"]]);
assert_prolog_success!(&mut wam, "call(david_lynch,kyle(Film)).",
[["Film = dune"],
["Film = blue_velvet"],
["Film = showgirls"],
["Film = flintstones"]]);
assert_prolog_failure!(&mut wam, "call(david_lynch,kyle(Film),_).");
submit(&mut wam, "call_mult(P,X) :- call(call(P),X).");
assert_prolog_success!(&mut wam, "call_mult(p(X),Y).",
[["Y = one","X = one"],
["Y = two","X = one"],
["Y = two","X = two"]]);
assert_prolog_success!(&mut wam, "call_mult(p(X),X).",
[["X = one"],
["X = two"]]);
assert_prolog_success!(&mut wam, "call_mult(p(one),X).",
[["X = one"],
["X = two"]]);
assert_prolog_success!(&mut wam, "call_mult(p(X),one).",
[["X = one"]]);
assert_prolog_failure!(&mut wam, "call_mult(p(two),one).");
assert_prolog_success!(&mut wam, "call_mult(p(two),two).");
assert_prolog_success!(&mut wam, "call(call(p(one)),X),call(call(p(two)),two).",
[["X = one"],
["X = two"]]);
assert_prolog_success!(&mut wam, "call(call(p(one,X))),call(call(p(two,two))).",
[["X = one"],
["X = two"]]);
assert_prolog_failure!(&mut wam, "call(call(p(one)),X),call(call(p(two)),one).");
assert_prolog_success!(&mut wam, "call(call(p(X)),X),call(call(p(Y)),Y).",
[["X = one","Y = one"],
["X = one","Y = two"],
["X = two","Y = one"],
["X = two","Y = two"]]);
assert_prolog_success!(&mut wam, "call(call(p(X)),Y),call(call(p(Y)),X).",
[["X = one","Y = one"],
["X = two","Y = two"]]);
assert_prolog_success!(&mut wam, "call(call(p),X,Y),call(call(call(p)),X,Y).",
[["X = one","Y = one"],
["Y = two","X = one"],
["Y = two","X = two"]]);
assert_prolog_success!(&mut wam, "call(call(p),X,Y),call(call(call(p(X))),Y).",
[["X = one","Y = one"],
["Y = two","X = one"],
["Y = two","X = two"]]);
assert_prolog_failure!(&mut wam, "call(call(p),X,Y),call(call(call(p(X))),X,Y).");
assert_prolog_success!(&mut wam, "call(call(p),X,Y),call(call(call(p(X))),X).",
[["X = one","Y = one"],
["Y = two","X = one"],
["Y = two","X = two"]]);
submit(&mut wam, "f(call(f,undefined)). f(undefined).");
submit(&mut wam, "call_var(P) :- P.");
assert_prolog_success!(&mut wam, "f(X),call_var(X).",
[["X = call(f,undefined)"]]);
assert_prolog_success!(&mut wam, "f(call(f,Q)),call_var(call(f,Q)).",
[["Q = undefined"]]);
assert_prolog_failure!(&mut wam, "call_var(call(undefined,Q)).");
assert_prolog_failure!(&mut wam, "call(call).");
assert_prolog_failure!(&mut wam, "call(call(call)).");
assert_prolog_failure!(&mut wam, "call(call(call(call))).");
assert_prolog_failure!(&mut wam, "call(call(call(call(call)))).");
assert_prolog_failure!(&mut wam, "call(call(call(call(call(call))))).");
assert_prolog_success!(&mut wam, "call(call(call(call(call(call(p(X))))))).",
[["X = x"],
["X = y"]]);
}
#[test]
fn test_queries_on_arithmetic()
{
let mut wam = Machine::new(readline::input_stream());
assert_prolog_success!(&mut wam, "X is 1, X is X.", [["X = 1"]]);
assert_prolog_failure!(&mut wam, "X is 1, X is X + 1.");
assert_prolog_success!(&mut wam, "X is 1, X is X + 0.", [["X = 1"]]);
assert_prolog_success!(&mut wam, "X is 1, X is X * 1.", [["X = 1"]]);
assert_prolog_failure!(&mut wam, "X is 1, X is X * 2.");
// assert_prolog_failure!(&mut wam, "X is 1 + a.");
// assert_prolog_failure!(&mut wam, "X is 1 + Y.");
assert_prolog_success!(&mut wam, "Y is 2 + 2 - 2, X is 1 + Y, X = 3.",
[["X = 3", "Y = 2"]]);
assert_prolog_failure!(&mut wam, "Y is 2 + 2 - 2, X is 1 + Y, X = 2.");
assert_prolog_success!(&mut wam, "6 is 6.");
assert_prolog_success!(&mut wam, "6 is 3 + 3.");
assert_prolog_success!(&mut wam, "6 is 3 * 2.");
assert_prolog_failure!(&mut wam, "7 is 3 * 2.");
assert_prolog_failure!(&mut wam, "7 is 3.5 * 2.");
assert_prolog_success!(&mut wam, "7.0 is 3.5 * 2.");
assert_prolog_success!(&mut wam, "7.0 is 14 / 2.");
assert_prolog_failure!(&mut wam, "4.666 is 14.0 / 3.");
assert_prolog_success!(&mut wam, "4.0 is 8.0 / 2.");
submit(&mut wam, "f(X) :- X is 5 // 0.");
assert_prolog_success!(&mut wam, "catch(f(X), error(evaluation_error(E), _), true), E = zero_divisor.",
[["E = zero_divisor", "X = _1"]]);
submit(&mut wam, "f(X) :- X is (5 rdiv 1) / 0.");
assert_prolog_success!(&mut wam, "catch(f(X), error(evaluation_error(E), _), true), E = zero_divisor.",
[["E = zero_divisor", "X = _1"]]);
submit(&mut wam, "f(X) :- X is 5.0 / 0.");
assert_prolog_success!(&mut wam, "catch(f(X), error(evaluation_error(E), _), true), E = zero_divisor.",
[["E = zero_divisor", "X = _1"]]);
assert_prolog_success!(&mut wam, "X is ((3 + 4) // 2) + 2 - 1 // 1, Y is 2+2, Z is X+Y.",
[["Y = 4", "X = 4", "Z = 8"]]);
assert_prolog_success!(&mut wam, "X is ((3 + 4) // 2) + 2 - 1 // 1, Y is 2+2, Z = 8, Y is 4.",
[["Y = 4", "X = 4", "Z = 8"]]);
assert_prolog_success!(&mut wam, "X is (3 rdiv 4) / 2, Y is 3 rdiv 8.",
[["X = 0.375", "Y = 3/8"]]);
assert_prolog_success!(&mut wam, "X is 10 xor -4, X is -10.", [["X = -10"]]);
assert_prolog_success!(&mut wam, "X is 4 xor -7, X is -3.", [["X = -3"]]);
assert_prolog_success!(&mut wam, "X is 10 xor 5 + 55, X = 70.", [["X = 70"]]);
assert_prolog_success!(&mut wam, "X is 10 rem -3, X = 1.", [["X = 1"]]);
assert_prolog_success!(&mut wam, "X is 10 mod -3, X is -2.", [["X = -2"]]);
assert_prolog_success!(&mut wam, "call(is, X, 3 + 4).", [["X = 7"]]);
assert_prolog_success!(&mut wam, "Y is 3 + 3, call(is, X, Y + 4).", [["Y = 6", "X = 10"]]);
assert_prolog_success!(&mut wam, "call(is, X, 3 + 4.5).", [["X = 7.5"]]);
assert_prolog_success!(&mut wam, "X is 2 rdiv 3, call(is, Y, X*X).", [["X = 2/3", "Y = 4/9"]]);
assert_prolog_failure!(&mut wam, "call(>, 3, 3 + 3).");
assert_prolog_failure!(&mut wam, "X is 3 + 3, call(>, 3, X).");
assert_prolog_success!(&mut wam, "X is 3 + 3, call(<, 3, X).", [["X = 6"]]);
assert_prolog_success!(&mut wam, "X is 3 + 3, X =:= 3 + 3.", [["X = 6"]]);
assert_prolog_success!(&mut wam, "catch(call(is, X, 3 // 0), error(E, _), true).",
[["X = _5", "E = evaluation_error(zero_divisor)"]]);
assert_prolog_success!(&mut wam, "catch(call(is, X, 3 // 3), _, true).", [["X = 1"]]);
submit(&mut wam, "f(X, Sum) :- ( integer(X) -> Sum is X + X * X + 3 ;
var(X) -> Sum = 1, X = 1 ).");
assert_prolog_success!(&mut wam, "f(X, Sum).", [["X = 1", "Sum = 1"]]);
assert_prolog_success!(&mut wam, "f(5, Sum).", [["Sum = 33"]]);
assert_prolog_success!(&mut wam, "f(5, 33).");
assert_prolog_failure!(&mut wam, "f(5, 32).");
// exponentiation.
// the ~ operators tests whether |X - Y| <= 1/10000...
// or whatever degree of approximation used by Newton's method in rational_pow.
submit(&mut wam, ":- op(900, xfx, ~).");
submit(&mut wam, "X ~ Y :- abs(X - Y) =< 1 rdiv 10000.");
assert_prolog_success!(&mut wam, "X is 3 ** 3.",
[["X = 27"]]);
assert_prolog_success!(&mut wam, "X is 3 ** 0.",
[["X = 1"]]);
assert_prolog_success!(&mut wam, "X is 3 ** -0.",
[["X = 1"]]);
assert_prolog_success!(&mut wam, "X is 3 ** 1.",
[["X = 3"]]);
assert_prolog_success!(&mut wam, "X is (-3) ** 3.",
[["X = -27"]]);
assert_prolog_success!(&mut wam, "X is (-3) ** 3.",
[["X = -27"]]);
assert_prolog_success!(&mut wam, "X is (-3) ** 0.",
[["X = 1"]]);
assert_prolog_success!(&mut wam, "X is (-3) ** -0.",
[["X = 1"]]);
assert_prolog_success!(&mut wam, "X is (-3) ** 1.",
[["X = -3"]]);
// assert_prolog_success!(&mut wam, "X is (1 rdiv 27) ** -3, X ~ 19683.");
// assert_prolog_success!(&mut wam, "X is (-1 rdiv 27) ** -3, X ~ -19683.");
assert_prolog_success!(&mut wam, "X is 0.0 ** 0.",
[["X = 1.0"]]);
assert_prolog_success!(&mut wam, "catch(_ is 0.0 ** -2342, error(E, _), true).",
[["E = evaluation_error(undefined)"]]);
assert_prolog_success!(&mut wam, "X is 0.0 ** 2342.",
[["X = 0"]]);
assert_prolog_success!(&mut wam, "catch(_ is (-3) ** (1 rdiv 2), error(E, _), true).",
[["E = evaluation_error(undefined)"]]);
assert_prolog_success!(&mut wam, "catch(_ is (-3/2) ** (1 rdiv 2), error(E, _), true).",
[["E = evaluation_error(undefined)"]]);
assert_prolog_success!(&mut wam, "catch(_ is (-3 rdiv 2) ** (1 rdiv 4), error(E, _), true).",
[["E = evaluation_error(undefined)"]]);
assert_prolog_success!(&mut wam, "catch(_ is (-3 rdiv 2) ** (-1 rdiv 4), error(E, _), true).",
[["E = evaluation_error(undefined)"]]);
assert_prolog_success!(&mut wam, "catch(_ is 0 ** (-5 rdiv 4), error(E, _), true).",
[["E = evaluation_error(undefined)"]]);
assert_prolog_success!(&mut wam, "X is 3 ** (1 rdiv 3), Y is X ** 3, Y ~ 3.");
// assert_prolog_success!(&mut wam, "X is (-3) ** (1 rdiv 3), Y is X ** 3, Y ~ -3.");
// assert_prolog_failure!(&mut wam, "X is (-5) ** (1 rdiv 3), Y is X ** 3, Y ~ -3.");
assert_prolog_success!(&mut wam, "X is 5 ** (1 rdiv 3), Y is X ** 3, Y ~ 5.");
assert_prolog_success!(&mut wam, "X is (1 rdiv 3) ** 0.5, Y is X ** 2, 1 rdiv 3 ~ Y.");
// assert_prolog_success!(&mut wam, "X is (-5) ** (-1 rdiv 3), Y is X ** 3, Y ~ -1 rdiv 5.");
// assert_prolog_failure!(&mut wam, "X is (-5) ** (-1 rdiv 3), Y is X ** 3, Y ~ 1 rdiv 5.");
assert_prolog_success!(&mut wam, "X is (0 rdiv 5) ** 5.",
[["X = 0"]]);
assert_prolog_success!(&mut wam, "X is (-0 rdiv 5) ** 5.",
[["X = 0"]]);
assert_prolog_success!(&mut wam, "X is (0 rdiv 5) ** 0.",
[["X = 1.0"]]);
assert_prolog_success!(&mut wam, "catch(_ is (0 rdiv 0) ** 5, error(E, _), true).",
[["E = evaluation_error(zero_divisor)"]]);
}
#[test]
fn test_queries_on_exceptions()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, "f(a). f(_) :- throw(stuff).");
submit(&mut wam, "handle(stuff).");
assert_prolog_success!(&mut wam, "catch(f(X), E, handle(E)).",
[["E = _2", "X = a"],
["E = stuff", "X = _1"]]);
submit(&mut wam, "f(a). f(X) :- g(X).");
submit(&mut wam, "g(x). g(y). g(z).");
submit(&mut wam, "handle(x). handle(y).");
assert_prolog_success!(&mut wam, "catch(f(X), X, handle(X)).",
[["X = a"],
["X = x"],
["X = y"],
["X = z"]]);
assert_prolog_success!(&mut wam, "catch(f(a), _, handle(X)).",
[["X = _4"]]);
assert_prolog_failure!(&mut wam, "catch(f(b), _, handle(X)).");
submit(&mut wam, "g(x). g(X) :- throw(x).");
assert_prolog_success!(&mut wam, "catch(f(X), x, handle(X)).",
[["X = a"],
["X = x"],
["X = x"],
["X = y"]]);
assert_prolog_success!(&mut wam, "catch(f(X), x, handle(z)).",
[["X = a"],
["X = x"]]);
assert_prolog_success!(&mut wam, "catch(f(z), x, handle(x)).");
assert_prolog_success!(&mut wam, "catch(f(z), x, handle(y)).");
assert_prolog_failure!(&mut wam, "catch(f(z), x, handle(z)).");
submit(&mut wam, "f(X) :- throw(stuff).");
submit(&mut wam, "handle(stuff). handle(other_stuff).");
// the first 3 cases should deterministically succeed.
assert_prolog_success!(&mut wam, "catch(f(X), E, handle(E)).",
[["X = _1", "E = stuff"]]);
assert_prolog_success!(&mut wam, "catch(f(X), E, handle(stuff)).",
[["X = _1", "E = stuff"]]);
assert_prolog_success!(&mut wam, "catch(f(X), E, handle(other_stuff)).",
[["X = _1", "E = stuff"]]);
assert_prolog_failure!(&mut wam, "catch(f(X), E, handle(not_stuff)).");
submit(&mut wam, "f(success). f(X) :- catch(g(X), E, handle(E)).");
submit(&mut wam, "g(g_success). g(g_success_2). g(X) :- throw(X).");
submit(&mut wam, "handle(x). handle(y). handle(z).");
assert_prolog_success!(&mut wam, "catch(f(X), E, E).",
[["X = success", "E = _2"],
["X = g_success", "E = _2"],
["X = g_success_2", "E = _2"],
["X = _1", "E = _2"],
["X = _1", "E = _2"],
["X = _1", "E = _2"]]);
assert_prolog_failure!(&mut wam, "catch(f(fail), _, _).");
assert_prolog_success!(&mut wam, "catch(f(x), _, _).");
assert_prolog_success!(&mut wam, "catch(f(y), _, _).");
assert_prolog_success!(&mut wam, "catch(f(z), _, _).");
submit(&mut wam, "f(success). f(E) :- catch(g(E), E, handle(E)).");
submit(&mut wam, "g(g_success). g(g_success_2). g(X) :- throw(X).");
submit(&mut wam, "handle(x). handle(y). handle(z). handle(v) :- throw(X).");
assert_prolog_success!(&mut wam, "catch(f(X), E, E).",
[["X = success", "E = _2"],
["X = g_success", "E = _2"],
["X = g_success_2", "E = _2"],
["X = x", "E = _2"],
["X = y", "E = _2"],
["X = z", "E = _2"]]);
submit(&mut wam, "handle(x). handle(y). handle(z). handle(v) :- throw(handle_top(X)).");
submit(&mut wam, "handle_top(an_error_1). handle_top(an_error_2).");
assert_prolog_success!(&mut wam, "catch(f(X), E, E).",
[["X = success", "E = _2"],
["X = g_success", "E = _2"],
["X = g_success_2", "E = _2"],
["X = x", "E = _2"],
["X = y", "E = _2"],
["X = z", "E = _2"],
["X = _1", "E = handle_top(an_error_1)"],
["X = _1", "E = handle_top(an_error_2)"]]);
submit(&mut wam, "handle(x). handle(y). handle(z). handle(v) :- throw(X).");
assert_prolog_success!(&mut wam, "catch(f(X), E, handle_top(E)).",
[["X = success", "E = _2"],
["X = g_success", "E = _2"],
["X = g_success_2", "E = _2"],
["X = x", "E = _2"],
["X = y", "E = _2"],
["X = z", "E = _2"],
["E = an_error_1", "X = _1"],
["E = an_error_2", "X = _1"]]);
}
#[test]
fn test_queries_on_skip_max_list() {
let mut wam = Machine::new(readline::input_stream());
// test on proper and empty lists.
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,5,[],Xs).",
[["Xs = []","N = 0"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,5,[a,b,c],Xs).",
[["Xs = []","N = 3"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,2,[a,b,c],Xs).",
[["Xs = [c]","N = 2"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,3,[a,b,c],Xs).",
[["Xs = []","N = 3"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,0,[],Xs).",
[["Xs = []","N = 0"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,0,[a,b,c],Xs).",
[["Xs = [a,b,c]","N = 0"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,0,[a,b,c],Xs).",
[["Xs = [a,b,c]","N = 0"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,0,[a,b,c],Xs).",
[["Xs = [a,b,c]","N = 0"]]);
assert_prolog_failure!(&mut wam, "'$skip_max_list'(4,0,[],Xs).");
assert_prolog_failure!(&mut wam, "'$skip_max_list'(3,0,[a,b,c],Xs).");
assert_prolog_failure!(&mut wam, "'$skip_max_list'(2,0,[a,b,c],Xs).");
assert_prolog_failure!(&mut wam, "'$skip_max_list'(1,0,[a,b,c],Xs).");
assert_prolog_success!(&mut wam, "'$skip_max_list'(0,5,[],Xs).",
[["Xs = []"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(3,5,[a,b,c],Xs).",
[["Xs = []"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(2,2,[a,b,c],Xs).",
[["Xs = [c]"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(3,3,[a,b,c],Xs).",
[["Xs = []"]]);
// tests on proper and empty lists with no max.
// test on proper and empty lists.
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,-1,[],Xs).",
[["Xs = []","N = 0"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,-1,[a,b,c],Xs).",
[["Xs = []","N = 3"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,-1,[],Xs).",
[["Xs = []","N = 0"]]);
assert_prolog_failure!(&mut wam, "'$skip_max_list'(4,-1,[],Xs).");
assert_prolog_success!(&mut wam, "'$skip_max_list'(3,-1,[a,b,c],Xs).",
[["Xs = []"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(0,-1,[],Xs).",
[["Xs = []"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(3,-1,[a,b,c],Xs).",
[["Xs = []"]]);
// tests on partial lists.
assert_prolog_success!(&mut wam, "'$skip_max_list'(3,4,[a,b,c|X],Xs0).",
[["X = _1","Xs0 = _1"]]);
assert_prolog_success!(&mut wam, "'$skip_max_list'(3,3,[a,b,c|X],Xs0).",
[["X = _1","Xs0 = _1"]]);
assert_prolog_failure!(&mut wam, "'$skip_max_list'(3,2,[a,b,c|X],Xs0).");
assert_prolog_failure!(&mut wam, "'$skip_max_list'(3,1,[a,b,c|X],Xs0).");
assert_prolog_failure!(&mut wam, "'$skip_max_list'(3,0,[a,b,c|X],Xs0).");
// tests on cyclic lists.
assert_prolog_failure!(&mut wam, "Xs = [a,b|Xs],'$skip_max_list'(3,5,X,Xs0).");
assert_prolog_failure!(&mut wam, "X = [a,b|Y],Y = [c,d|X],'$skip_max_list'(4,5,X,Xs0).");
assert_prolog_failure!(&mut wam, "X = [a,b|Y],Y = [c,d|X],'$skip_max_list'(4,3,X,Xs0).");
// tests on non lists.
assert_prolog_success!(&mut wam, "'$skip_max_list'(N,9,non_list,Xs).",
[["Xs = non_list","N = 0"]]);
}
#[test]
fn test_queries_on_conditionals()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, "test(A) :- ( A =:= 2 -> writeq(\"A is 2\")
; A =:= 3 -> writeq(\"A is 3\")
; A = \"not 2 or 3\"
).");
assert_prolog_success!(&mut wam, "catch(test(A), error(instantiation_error, _), true).");
assert_prolog_success!(&mut wam, "A = 2, test(A).", [["A = 2"]]);
assert_prolog_success!(&mut wam, "A = 3, test(A), B = 3, test(B).", [["A = 3", "B = 3"]]);
submit(&mut wam, "f(a). f(b).");
submit(&mut wam, "g(1). g(2). g(3).");
submit(&mut wam, "typed_dispatch(X) :- ( var(X) -> f(X)
; integer(X) -> g(X)
; atomic(X)).");
assert_prolog_success!(&mut wam, "typed_dispatch(X).", [["X = a"], ["X = b"]]);
assert_prolog_success!(&mut wam, "typed_dispatch(a).");
assert_prolog_success!(&mut wam, "typed_dispatch(b).");
assert_prolog_success!(&mut wam, "typed_dispatch(c).");
assert_prolog_success!(&mut wam, "typed_dispatch(1).");
assert_prolog_success!(&mut wam, "typed_dispatch(2).");
assert_prolog_success!(&mut wam, "typed_dispatch(3).");
assert_prolog_failure!(&mut wam, "typed_dispatch(4).");
assert_prolog_failure!(&mut wam, "typed_dispatch(5).");
assert_prolog_failure!(&mut wam, "typed_dispatch(compound(term)).");
submit(&mut wam, "f(a). f(b). f(compound(term)).");
submit(&mut wam, "g(X, Y) :- f(X), (atomic(X) -> X = a ; X = a ; X = compound(Y)).");
assert_prolog_success!(&mut wam, "g(X, Y).",
[["Y = _1", "X = a"],
["Y = term", "X = compound(term)"]]);
assert_prolog_success!(&mut wam, "g(X, X).", [["X = a"]]);
assert_prolog_success!(&mut wam, "g(compound(X), X).", [["X = term"]]);
assert_prolog_success!(&mut wam, "g(X, term).", [["X = a"], ["X = compound(term)"]]);
assert_prolog_success!(&mut wam, "g(a, _).");
assert_prolog_success!(&mut wam, "g(X, _), X = a.", [["X = a"]]);
submit(&mut wam, "g(X) :- var(X) -> (var(X) -> X is 3 + 3 ; X = not_6).");
assert_prolog_success!(&mut wam, "g(X).", [["X = 6"]]);
assert_prolog_failure!(&mut wam, "g(1).");
assert_prolog_failure!(&mut wam, "g(6).");
assert_prolog_failure!(&mut wam, "g(not_6).");
assert_prolog_success!(&mut wam, "f(X), (g(Y), !).", [["X = a", "Y = 6"]]);
submit(&mut wam, "test(X, [X]) :- (atomic(X) -> true ; throw(type_error(atomic_expected, X))).
test(_, _).");
assert_prolog_success!(&mut wam, "catch(test(a, [a]), type_error(E), true).",
[["E = _6"], ["E = _6"]]);
assert_prolog_success!(&mut wam, "f(X), call(->, atomic(X), true).",
[["X = a"], ["X = b"]]);
}
#[test]
fn test_queries_on_modules()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, ":- use_module('src/prolog/lib/lists.pl').");
submit_code(&mut wam, "
:- module(my_lists, [local_member/2, reverse/2]).
:- use_module('src/prolog/lib/lists.pl', [member/2]).
local_member(X, Xs) :- member(X, Xs).
reverse(Xs, Ys) :- lists:reverse(Xs, Ys).");
assert_prolog_success!(&mut wam, "my_lists:local_member(1, [1,2,3]).");
assert_prolog_success!(&mut wam, "my_lists:reverse([a,b,c], [c,b,a]).");
submit_code(&mut wam, "
:- module(my_lists_2, [local_member/2]).
:- use_module(library(my_lists), [local_member/2]).");
assert_prolog_success!(&mut wam, "my_lists_2:local_member(1, [1,2,3]).");
assert_prolog_success!(&mut wam, "catch(local_member(X, Xs), error(E, _), true).",
[["X = _1", "E = existence_error(procedure,local_member/2)", "Xs = _2"]]);
submit(&mut wam, ":- use_module('src/prolog/lib/lists.pl', [reverse/2]).");
assert_prolog_success!(&mut wam, "catch(member(_, _), error(existence_error(procedure, P), _), true).",
[["P = member/2"]]);
assert_prolog_success!(&mut wam, "reverse(_, _).");
submit(&mut wam, ":- use_module('src/prolog/lib/lists.pl', []).");
assert_prolog_success!(&mut wam, "catch(reverse(_, _), error(existence_error(procedure, P), _), true).",
[["P = reverse/2"]]);
}
#[test]
fn test_queries_on_builtins()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, ":- use_module('src/prolog/lib/lists.pl').");
assert_prolog_failure!(&mut wam, "atom(X).");
assert_prolog_success!(&mut wam, "atom(a).");
assert_prolog_failure!(&mut wam, "atom(\"string\").");
assert_prolog_success!(&mut wam, "atom([]).");
assert_prolog_failure!(&mut wam, "atom(1).");
assert_prolog_failure!(&mut wam, "atom(0).");
assert_prolog_failure!(&mut wam, "atom(0.0).");
assert_prolog_failure!(&mut wam, "atom([a,b,c]).");
assert_prolog_failure!(&mut wam, "atom(atop(the_trees)).");
assert_prolog_failure!(&mut wam, "atomic(X).");
assert_prolog_success!(&mut wam, "atomic(a).");
assert_prolog_success!(&mut wam, "atomic(\"string\").");
assert_prolog_success!(&mut wam, "atomic([]).");
assert_prolog_success!(&mut wam, "atomic(1).");
assert_prolog_success!(&mut wam, "atomic(0).");
assert_prolog_success!(&mut wam, "atomic(0.0).");
assert_prolog_failure!(&mut wam, "atomic([a,b,c]).");
assert_prolog_failure!(&mut wam, "atomic(atop(the_trees)).");
assert_prolog_success!(&mut wam, "var(X), X = 3, atomic(X).", [["X = 3"]]);
assert_prolog_failure!(&mut wam, "var(X), X = 3, var(X).");
assert_prolog_success!(&mut wam, "arg(1, f(a,b,c,d), Arg).", [["Arg = a"]]);
assert_prolog_success!(&mut wam, "arg(2, f(a,b,c,d), Arg).", [["Arg = b"]]);
assert_prolog_success!(&mut wam, "arg(3, f(a,b,c,d), Arg).", [["Arg = c"]]);
assert_prolog_success!(&mut wam, "arg(4, f(a,b,c,d), Arg).", [["Arg = d"]]);
assert_prolog_success!(&mut wam, "catch(arg(N, f, Arg), error(E, _), true).",
[["E = instantiation_error", "Arg = _3", "N = _1"]]);
assert_prolog_failure!(&mut wam, "arg(N, f(arg, arg, arg), not_arg).");
assert_prolog_failure!(&mut wam, "arg(1, f(arg, not_arg, not_arg), not_arg).");
assert_prolog_success!(&mut wam, "arg(2, f(arg, not_arg, not_arg), not_arg).");
assert_prolog_success!(&mut wam, "arg(3, f(arg, not_arg, not_arg), not_arg).");
assert_prolog_success!(&mut wam, "functor(f(a,b,c), F, Arity).",
[["F = f", "Arity = 3"]]);
assert_prolog_success!(&mut wam, "functor(f(a,b,c), F, N).",
[["F = f", "N = 3"]]);
assert_prolog_failure!(&mut wam, "functor(f(a,b,c), g, N).");
assert_prolog_success!(&mut wam, "functor(f(a,b,c), F, 3).", [["F = f"]]);
assert_prolog_failure!(&mut wam, "functor(f(a,b,c), F, 4).");
assert_prolog_failure!(&mut wam, "functor(f(a,b,c), g, 3).");
assert_prolog_success!(&mut wam, "functor(F, f, 0).", [["F = f"]]);
assert_prolog_success!(&mut wam, "functor(Func,f,3).",[["Func = f(_2,_3,_4)"]]);
assert_prolog_success!(&mut wam, "functor(Func,f,4).",[["Func = f(_2,_3,_4,_5)"]]);
assert_prolog_success!(&mut wam, "catch(functor(F,\"sdf\",3),error(E,_),true).",
[["E = type_error(atom,[s,d,f])","F = _1"]]);
assert_prolog_success!(&mut wam, "catch(functor(Func,F,3),error(E,_),true).",
[["E = instantiation_error","Func = _1","F = _2"]]);
assert_prolog_success!(&mut wam, "catch(functor(Func,f,N),error(E,_),true).",
[["E = instantiation_error","Func = _1","N = _3"]]);
assert_prolog_failure!(&mut wam, "catch(functor(Func,f,N),error(E,_),false).");
assert_prolog_success!(&mut wam, "X is 3,call(integer,X).");
assert_prolog_failure!(&mut wam, "X is 3 + 3.5,call(integer,X).");
assert_prolog_success!(&mut wam, "X is 3 + 3.5,\\+ call(integer,X).");
assert_prolog_success!(&mut wam, "X is 3 + 3.5,\\+ integer(X).");
assert_prolog_success!(&mut wam, "Func =.. [atom].",[["Func = atom"]]);
assert_prolog_success!(&mut wam, "Func =.. [\"sdf\"].",[["Func = [s,d,f]"]]);
assert_prolog_success!(&mut wam, "Func =.. [1].",[["Func = 1"]]);
assert_prolog_success!(&mut wam, "catch(Func =.. [1,2],error(type_error(atom,1),_),true).");
assert_prolog_success!(&mut wam, "f(1,2,3) =.. List.",[["List = [f,1,2,3]"]]);
assert_prolog_success!(&mut wam, "f(1,2,3) =.. [f,1,2,3].");
assert_prolog_failure!(&mut wam, "f(1,2,3) =.. [f,1].");
assert_prolog_failure!(&mut wam, "f(1,2,3) =.. [g,1,2,3].");
assert_prolog_success!(&mut wam, "f(1,2,3) =.. [f,X,Y,Z].",
[["X = 1","Y = 2","Z = 3"]]);
assert_prolog_success!(&mut wam, "length([a,b,c],N).",[["N = 3"]]);
assert_prolog_success_with_limit!(&mut wam, "length(Xs,N).",
[["N = 0","Xs = []"],
["N = 1","Xs = [_4]"],
["N = 2","Xs = [_4,_8]"],
["N = 3","Xs = [_4,_8,_12]"],
["N = 4","Xs = [_4,_8,_12,_16]"],
["N = 5","Xs = [_4,_8,_12,_16,_20]"]],
6);
assert_prolog_success!(&mut wam, "length(Xs,3).",[["Xs = [_5,_9,_13]"]]);
assert_prolog_success!(&mut wam, "length([],N).",[["N = 0"]]);
assert_prolog_success!(&mut wam, "length(Xs,0).",[["Xs = []"]]);
assert_prolog_success!(&mut wam, "length([a,b,[a,b,c]],3).");
assert_prolog_failure!(&mut wam, "length([a,b,[a,b,c]],2).");
assert_prolog_success!(&mut wam, "catch(length(a,[]),error(E,_),true).",
[["E = type_error(integer,[])"]]);
assert_prolog_success!(&mut wam, "copy_term([1,2,3],[X,Y,Z]).",
[["Z = 3","Y = 2","X = 1"]]);
assert_prolog_success!(&mut wam, "copy_term(f(X,[a],Z),f(X,Y,Z)).",
[["X = _3","Y = [a]","Z = _5"]]);
assert_prolog_failure!(&mut wam, "copy_term(g(X),f(X)).");
assert_prolog_success!(&mut wam, "copy_term(f(X),f(X)).",
[["X = _1"]]);
assert_prolog_success!(&mut wam, "copy_term([[[[X,Y],Y],X]],Term).",
[["Term = [[[[_22,_26],_26],_22]]","X = _2","Y = _0"]]);
assert_prolog_success!(&mut wam, "copy_term([X,[Y,[X]]],Term).",
[["Term = [_12,[_16,[_12]]]","X = _0","Y = _4"]]);
// test copy_term on cyclic terms.
assert_prolog_failure!(&mut wam, "X = g(X,Y),Y = f(X),copy_term(Y,g(Z)).");
assert_prolog_success!(&mut wam, "X = g(X,Y),Y = f(X),copy_term(Y,f(Z)).",
[["Y = f(g(X,Y))","X = g(X,f(X))","Z = g(Z,f(Z))"]]);
assert_prolog_success!(&mut wam, "X = g(X,Y),Y = f(X),copy_term(Y,V).",
[["V = f(g(g(g(...,V),V),V))","X = g(X,f(X))","Y = f(g(X,Y))"]]);
assert_prolog_success!(&mut wam, "f(Y,Y,[X,a,[],Y]) = Term,copy_term(Term,NewTerm).",
[["NewTerm = f(_16,_16,[_19,a,[],_16])",
"Term = f(_0,Y,[_6,a,[],Y])",
"X = _6","Y = _0"]]);
assert_prolog_success!(&mut wam, "float(3.14159269).");
assert_prolog_failure!(&mut wam, "float(3).");
assert_prolog_failure!(&mut wam, "float(\"sdfsa\").");
assert_prolog_failure!(&mut wam, "float(atom).");
assert_prolog_failure!(&mut wam, "float(structure(functor)).");
assert_prolog_failure!(&mut wam, "float([1,2,3]).");
assert_prolog_failure!(&mut wam, "float([1,2,X]).");
assert_prolog_failure!(&mut wam, "X is 3 rdiv 4,float(X).");
assert_prolog_success!(&mut wam, "X is 3 rdiv 4,rational(X).");
assert_prolog_failure!(&mut wam, "rational(3).");
assert_prolog_failure!(&mut wam, "rational(f(X)).");
assert_prolog_failure!(&mut wam, "rational(\"sdfsa\").");
assert_prolog_failure!(&mut wam, "rational(atom).");
assert_prolog_failure!(&mut wam, "rational(structure(functor)).");
assert_prolog_failure!(&mut wam, "rational([1,2,3]).");
assert_prolog_failure!(&mut wam, "rational([1,2,X]).");
assert_prolog_success!(&mut wam, "compound(functor(compound)).");
assert_prolog_success!(&mut wam, "compound(f(X)).");
assert_prolog_success!(&mut wam, "compound([1,2,3]).");
assert_prolog_failure!(&mut wam, "compound([]).");
assert_prolog_failure!(&mut wam, "compound(3.14159269).");
assert_prolog_failure!(&mut wam, "compound(3).");
assert_prolog_failure!(&mut wam, "compound(\"sdfsa\").");
assert_prolog_failure!(&mut wam, "compound(atom).");
assert_prolog_failure!(&mut wam, "string(functor(string)).");
assert_prolog_failure!(&mut wam, "string(3.14159269).");
assert_prolog_failure!(&mut wam, "string(3).");
assert_prolog_failure!(&mut wam, "string(f(X)).");
assert_prolog_success!(&mut wam, "string(\"sdfsa\").");
assert_prolog_failure!(&mut wam, "string(atom).");
assert_prolog_failure!(&mut wam, "string([1,2,3]).");
assert_prolog_failure!(&mut wam, "string([1,2,X]).");
assert_prolog_success!(&mut wam, "X = nonvar,nonvar(X).");
assert_prolog_failure!(&mut wam, "nonvar(X).");
assert_prolog_success!(&mut wam, "nonvar(f(X)).");
assert_prolog_success!(&mut wam, "nonvar(functor(nonvar)).");
assert_prolog_success!(&mut wam, "nonvar(3.14159269).");
assert_prolog_success!(&mut wam, "nonvar(3).");
assert_prolog_success!(&mut wam, "nonvar(\"sdfsa\").");
assert_prolog_success!(&mut wam, "nonvar(atom).");
assert_prolog_success!(&mut wam, "nonvar([1,2,3]).");
assert_prolog_success!(&mut wam, "nonvar([1,2,X]).");
assert_prolog_success!(&mut wam, "A = f(A),ground(f(f(A))),ground(f(A)),ground(A).");
assert_prolog_failure!(&mut wam, "B = f(A),ground(B).");
assert_prolog_failure!(&mut wam, "B = f(A),ground(A).");
assert_prolog_success!(&mut wam, "ground(x),ground(f(x)),X = f(x),ground(g(f(X),[a,b])).");
assert_prolog_success!(&mut wam, "A = f(A),g(A,B) == g(f(A),B).");
assert_prolog_failure!(&mut wam, "A = f(A),g(A,B) == g(f(A),b).");
assert_prolog_failure!(&mut wam, "A == B.");
assert_prolog_failure!(&mut wam, "A == 12.1.");
assert_prolog_success!(&mut wam, "X = x,f(X,x) == f(x,X).");
assert_prolog_failure!(&mut wam, "A = f(A),g(A,B) \\== g(f(A),B).");
assert_prolog_success!(&mut wam, "A = f(A),g(A,B) \\== g(f(A),b).");
assert_prolog_success!(&mut wam, "A \\== B.");
assert_prolog_success!(&mut wam, "A \\== 12.1.");
assert_prolog_failure!(&mut wam, "X = x,f(X,x) \\== f(x,X).");
assert_prolog_success!(&mut wam, "X @=< Y.");
assert_prolog_failure!(&mut wam, "X @>= Y.");
assert_prolog_failure!(&mut wam, "X @> Y.");
assert_prolog_success!(&mut wam, "X @>= X.");
assert_prolog_failure!(&mut wam, "atom @=< \"string\".");
assert_prolog_success!(&mut wam, "atom @=< atom.");
assert_prolog_failure!(&mut wam, "atom @=< aaa.");
assert_prolog_success!(&mut wam, "atom @>= \"string\".");
assert_prolog_success!(&mut wam, "X is 3 + 3,X @>= Y.");
assert_prolog_success!(&mut wam, "f(X) @>= f(X).");
assert_prolog_success!(&mut wam, "f(X) @>= a.");
assert_prolog_failure!(&mut wam, "f(X) @=< a.");
assert_prolog_success!(&mut wam, "[1,2] @=< [1,2].");
assert_prolog_failure!(&mut wam, "[1,2,3] @=< [1,2].");
assert_prolog_success!(&mut wam, "[] @=< [1,2].");
assert_prolog_failure!(&mut wam, "[] @< 1.");
assert_prolog_failure!(&mut wam, "[] @< \"string\".");
assert_prolog_failure!(&mut wam, "[] @< atom.");
assert_prolog_success!(&mut wam, "atom @< [].");
assert_prolog_success!(&mut wam, "1.1 @< 1.");
assert_prolog_success!(&mut wam, "1.0 @=< 1.");
assert_prolog_success!(&mut wam, "1 @=< 1.0.");
submit(&mut wam, ":- use_module('src/prolog/lib/non_iso.pl').");
assert_prolog_success!(&mut wam, "variant(X, Y).");
assert_prolog_failure!(&mut wam, "variant(f(X), f(x)).");
assert_prolog_success!(&mut wam, "variant(X, X).");
assert_prolog_success!(&mut wam, "variant(f(x), f(x)).");
assert_prolog_failure!(&mut wam, "variant([X,Y,Z], [V,W,V]).");
assert_prolog_success!(&mut wam, "variant([X,Y,Z], [V,W,Z]).");
assert_prolog_success!(&mut wam, "variant([X,Y,X], [V,W,V]).");
assert_prolog_success!(&mut wam, "g(B) = B, g(A) = A, variant(A, B).");
assert_prolog_success!(&mut wam, "keysort([1-1,1-1],Sorted).",
[["Sorted = [1-1,1-1]"]]);
assert_prolog_success!(&mut wam, "keysort([2-99,1-a,3-f(_),1-z,1-a,2-44],Sorted).",
[["Sorted = [1-a,1-z,1-a,2-99,2-44,3-f(_7)]"]]);
assert_prolog_success!(&mut wam, "keysort([X-1,1-1],[2-1,1-1]).",
[["X = 2"]]);
assert_prolog_failure!(&mut wam, "Pairs = [a-a|Pairs],keysort(Pairs,_).");
assert_prolog_success!(&mut wam, "Pairs = [a-a|Pairs],catch(keysort(Pairs,_),error(E,_),true).",
[["E = type_error(list,[a-a,a-a,a-a|...])","Pairs = [a-a|Pairs]"]]);
assert_prolog_success!(&mut wam, "keysort([],L).",
[["L = []"]]);
assert_prolog_success!(&mut wam, "catch(keysort([a|_],_),error(E,_),true).",
[["E = instantiation_error"]]);
assert_prolog_success!(&mut wam, "catch(keysort([],[a|a]),error(Pat,_),true).",
[["Pat = type_error(list,[a|a])"]]);
assert_prolog_success!(&mut wam, "catch(keysort(_,_),error(E,_),true).",
[["E = type_error(list,_16)"]]);
assert_prolog_success!(&mut wam, "catch(keysort([a-1],[_|b]),error(E,_),true).",
[["E = type_error(list,[_27|b])"]]);
assert_prolog_success!(&mut wam, "catch(keysort([a-1],[a-b,c-d,a]),error(E,_),true).",
[["E = type_error(pair,a)"]]);
assert_prolog_success!(&mut wam, "catch(keysort([a],[a-b]),error(E,_),true).",
[["E = type_error(pair,a)"]]);
assert_prolog_success!(&mut wam, "catch(sort([a|_],_),error(E,_),true).",
[["E = instantiation_error"]]);
assert_prolog_success!(&mut wam, "catch(sort([],[a|a]),error(Pat,_),true).",
[["Pat = type_error(list,[a|a])"]]);
assert_prolog_success!(&mut wam, "sort([],L).",
[["L = []"]]);
assert_prolog_success!(&mut wam, "catch(sort(_,[]),error(E,_),true).",
[["E = type_error(list,_16)"]]);
assert_prolog_success!(&mut wam, "catch(sort([a,b,c],not_a_list),error(E,_),true).",
[["E = type_error(list,not_a_list)"]]);
assert_prolog_success!(&mut wam, "call(((G = 2 ; fail),B=3,!)).",
[["G = 2","B = 3"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit((setup_call_cleanup(S=1,(G=2;fail),writeq(S+G>B)),B=3,!),135,R).",
[["G = 2","B = 3","R = !","S = 1"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit((setup_call_cleanup(S=1,(G=2;fail),writeq(S+G>B)),B=3,!),10,R).",
[["S = _1","G = _4","B = _14","R = inference_limit_exceeded"]]);
assert_prolog_success!(&mut wam, "X = '\\033\\'.",
[["X = '\\x1b\\'"]]);
assert_prolog_success!(&mut wam, "X = '\\n'.",
[["X = '\\n'"]]);
assert_prolog_success!(&mut wam, "X = '\\b'.",
[["X = '\\b'"]]);
assert_prolog_success!(&mut wam, "X = '\\v'.",
[["X = '\\v'"]]);
assert_prolog_success!(&mut wam, "X = '\\a'.",
[["X = '\\a'"]]);
assert_prolog_success!(&mut wam, "X = '\\f'.",
[["X = '\\f'"]]);
assert_prolog_success!(&mut wam, "X = '\\b\\r\\f\\t\\n'.",
[["X = '\\b\\r\\f\\t\\n'"]]);
assert_prolog_success!(&mut wam, "(- (1)) = -(1).");
assert_prolog_success!(&mut wam, "(- -1) = -(-1).");
assert_prolog_success!(&mut wam, "X = ((*)=(*)).",
[["X = ((*)=(*))"]]);
assert_prolog_success!(&mut wam, "X = [.,.(.,.,.)].",
[["X = ['.','.'('.','.','.')]"]]);
assert_prolog_success!(&mut wam, "X = a+(b*c).",
[["X = a+b*c"]]);
assert_prolog_success!(&mut wam, "X = a*(b+c).",
[["X = a*(b+c)"]]);
assert_prolog_success!(&mut wam, "X = [:-,-].",
[["X = [:-,-]"]]);
assert_prolog_success!(&mut wam, "X = a*(b+c).",
[["X = a*(b+c)"]]);
assert_prolog_success!(&mut wam, "X = (-)-(-).",
[["X = (-)-(-)"]]);
assert_prolog_success!(&mut wam, "X = ((:-):-(:-)).",
[["X = ((:-):-(:-))"]]);
assert_prolog_success!(&mut wam, "X = (a:-b,c).",
[["X = (a:-b,c)"]]);
assert_prolog_success!(&mut wam, "X = f((f:-a,b,c)).",
[["X = f((f:-a,b,c))"]]);
assert_prolog_success!(&mut wam, "X = f((f:-a,(b,c))).",
[["X = f((f:-a,b,c))"]]);
assert_prolog_success!(&mut wam, "X = f((a,b,c)).",
[["X = f((a,b,c))"]]);
assert_prolog_success!(&mut wam, "X = f((a,(b,c))).",
[["X = f((a,b,c))"]]);
assert_prolog_success!(&mut wam, "X = f(((a,b),c)).",
[["X = f(((a,b),c))"]]);
assert_prolog_success!(&mut wam, "X = f(((a,b),(c,d))).",
[["X = f(((a,b),c,d))"]]);
assert_prolog_success!(&mut wam, "findall(X,(X = 1 ; X = 2),S).",
[["S = [1,2]","X = _0"]]);
assert_prolog_success!(&mut wam, "findall(X+Y,(X = 1),S).",
[["S = [1+_36]","X = _1","Y = _2"]]);
assert_prolog_success!(&mut wam, "findall(X,false,S).",
[["S = []","X = _0"]]);
assert_prolog_success!(&mut wam, "findall(X,(X = 1 ; X = 1),S).",
[["S = [1,1]","X = _0"]]);
assert_prolog_failure!(&mut wam, "findall(X,(X = 2 ; X = 1),[1,2]).");
assert_prolog_success!(&mut wam, "findall(X,(X = 1 ; X = 2),[X,Y]).",
[["X = 1","Y = 2"]]);
assert_prolog_success!(&mut wam, "catch(findall(X,4,S),error(type_error(callable,4),_),true).",
[["S = _3","X = _1"]]);
assert_prolog_success!(&mut wam, "bagof(X,(X=Y; X=Z),S).",
[["S = [_3,_6]","X = _0","Y = _3","Z = _6"]]);
assert_prolog_success!(&mut wam, "bagof(X,(X=1 ; X = 2),X).",
[["X = [1,2]"]]);
assert_prolog_success!(&mut wam, "bagof(X,(X=1 ; X = 2),S).",
[["S = [1,2]","X = _0"]]);
assert_prolog_success!(&mut wam, "bagof(1,(Y=1 ; Y=2),L).",
[["L = [1]","Y = 1"],
["L = [1]","Y = 2"]]);
submit(&mut wam, "b(1,1). b(1,1). b(1,2). b(2,1). b(2,2). b(2,2).");
assert_prolog_success!(&mut wam, "bagof(X,b(X,Y),L).",
[["L = [1,Y,2]","X = _0","Y = 1"],
["L = [1,2,Y]","X = _0","Y = 2"]]);
assert_prolog_success!(&mut wam, "bagof(X,(X=Y; X=Z; Y=1),L).",
[["L = [_3,_6]","X = _0","Y = _3","Z = _6"],
["L = [_112]","X = _0","Y = 1","Z = _6"]]);
submit(&mut wam, "a(1,f(_)). a(2,f(_)).");
assert_prolog_success!(&mut wam, "bagof(X,a(X,Y),L).",
[["L = [1,2]","X = _0","Y = f(_78)"]]);
assert_prolog_success!(&mut wam, "setof(X,(X = 1 ; X = 2),S).",
[["S = [1,2]","X = _0"]]);
assert_prolog_success!(&mut wam, "setof(X,(X=Y ; X=Z),S).",
[["S = [_3,_6]","X = _0","Y = _3","Z = _6"]]);
assert_prolog_failure!(&mut wam, "setof(X,false,S).");
assert_prolog_success!(&mut wam, "setof(1,(Y=1 ; Y=2),L).",
[["L = [1]","Y = 1"],
["L = [1]","Y = 2"]]);
assert_prolog_success!(&mut wam, "setof(X,(X=Y; X=Z; Y=1),L).",
[["L = [_3,_6]","X = _0","Y = _3","Z = _6"],
["L = [_112]","Y = 1","X = _0","Y = 1","Z = _6"]]);
assert_prolog_failure!(&mut wam, "setof(X,member(X,[f(U,b),f(V,c)]),[f(a,c),f(a,b)]).");
assert_prolog_success!(&mut wam, "setof(X,member(X,[f(U,b),f(V,c)]),[f(a,b),f(a,c)]).",
[["U = a","V = a","X = _0"]]);
assert_prolog_success!(&mut wam, "setof(X,member(X,[V,U,f(U),f(V)]),L).",
[["L = [_2,_4,f(U),f(V)]","U = _2","V = _4","X = _0"]]);
assert_prolog_success!(&mut wam, "setof(X,member(X,[V,U,f(U),f(V)]),[a,b,f(a),f(b)]).",
[["U = a","V = b","X = _0"]]);
assert_prolog_success!(&mut wam, "findall(X,(X = 1 ; X = 2),S0,S1).",
[["S0 = [1,2|_11]","S1 = _11","X = _0"]]);
assert_prolog_success!(&mut wam, "findall(X+Y,(X = 1),S0,S1).",
[["S0 = [1+_44|_7]","S1 = _7","X = _1","Y = _2"]]);
assert_prolog_success!(&mut wam, "findall(X,false,S,_).",
[["S = []","X = _0"]]);
assert_prolog_success!(&mut wam, "findall(X,(X = 1 ; X = 1),S0,S1).",
[["S0 = [1,1|_11]","S1 = _11","X = _0"]]);
assert_prolog_failure!(&mut wam, "findall(X,(X = 2 ; X = 1),[1,2|S],S).");
assert_prolog_success!(&mut wam, "findall(X,(X = 1 ; X = 2),[X,Y|S],S).",
[["S = _11","X = 1","Y = 2"]]);
assert_prolog_success!(&mut wam, "catch(findall(X,4,S0,S1),error(type_error(callable,4),_),true).",
[["S0 = _3","S1 = _4","X = _1"]]);
// bagof & setof with existential variables.
assert_prolog_success!(&mut wam, "bagof(X,Y^((X = 1,Y = 1; (X = 2,Y = 2))),S).",
[["S = [1,2]","X = _0","Y = _5"]]);
assert_prolog_success!(&mut wam, "bagof(X,Y^((X = 1 ; Y = 1) ; (X = 2,Y = 2)),S).",
[["S = [1,_126,2]","X = _0","Y = _5"]]);
assert_prolog_success!(&mut wam, "setof(X,Y^((X = 1,Y = 1; (X = 2,Y = 2))),S).",
[["S = [1,2]","X = _0","Y = _5"]]);
assert_prolog_success!(&mut wam, "setof(X,Y^((X = 1 ; Y = 1) ; (X = 2,Y = 2)),S).",
[["S = [_126,1,2]","X = _0","Y = _5"]]);
assert_prolog_failure!(&mut wam, "forall(true,false).");
assert_prolog_success!(&mut wam, "forall(false,true).");
assert_prolog_success!(&mut wam, "catch(forall(_,true),error(instantiation_error,_),true).");
assert_prolog_success!(&mut wam, "catch(forall(true,_),error(instantiation_error,_),true).");
assert_prolog_success!(&mut wam, "catch(forall(1,true),error(type_error(callable,1),_),true).");
assert_prolog_success!(&mut wam, "catch(forall(true,1),error(type_error(callable,1),_),true).");
submit(&mut wam, "
:- dynamic(cat/0).
cat.
:- dynamic(dog/0).
dog :- true.
elk(X) :- moose(X).
:- dynamic(legs/2).
legs(A,6) :- insect(A).
legs(A,7) :- A,call(A).
:- dynamic(insect/1).
insect(ant).
insect(bee).");
assert_prolog_success!(&mut wam, "clause(cat,true).");
assert_prolog_success!(&mut wam, "clause(dog,true).");
assert_prolog_success!(&mut wam, "clause(legs(I,6),Body).",
[["I = _1","Body = insect(_1)"]]);
assert_prolog_success!(&mut wam, "clause(legs(C,7),Body).",
[["C = _1","Body = (_1,call(C))"]]);
assert_prolog_success!(&mut wam, "clause(insect(I),T).",
[["I = ant","T = true"],
["I = bee","T = true"]]);
assert_prolog_failure!(&mut wam, "clause(x,Body).");
assert_prolog_success!(&mut wam, "catch(clause(_,_),error(instantiation_error,_),true).");
assert_prolog_success!(&mut wam, "catch(clause(4,_),error(type_error(callable,4),_),true).");
assert_prolog_success!(&mut wam, "catch(clause(elk(N),_),error(permission_error(access,private_procedure,elk/1),_),true).");
assert_prolog_success!(&mut wam, "catch(clause(atom(N),_),error(permission_error(access,private_procedure,atom/1),_),true).");
assert_prolog_success!(&mut wam, "asserta(legs(octopus,8)).");
assert_prolog_success!(&mut wam, "asserta( (legs(A,4) :- animal(A)) ).");
assert_prolog_success!(&mut wam, "asserta( (foo(X) :- X,call(X)) ).");
assert_prolog_success!(&mut wam, "catch(asserta(_),error(instantiation_error,_),true).");
assert_prolog_failure!(&mut wam, "asserta(_).");
assert_prolog_success!(&mut wam, "catch(asserta(4),error(type_error(callable,4),_),true).");
assert_prolog_failure!(&mut wam, "asserta(4).");
assert_prolog_success!(&mut wam, "catch(asserta( (foo :- 4) ),error(type_error(callable,4),_),true).");
assert_prolog_failure!(&mut wam, "asserta( (foo :- 4) ).");
assert_prolog_success!(&mut wam, "catch(asserta( (atom(_) :- true) ),error(permission_error(modify,static_procedure,atom/1),_),true).");
assert_prolog_failure!(&mut wam, "asserta( (atom(_) :- true) ).");
submit(&mut wam, "
:- dynamic(cat/0).
cat.
:- dynamic(dog/0).
dog :- true.
elk(X) :- moose(X).
:- dynamic(legs/2).
legs(A,6) :- insect(A).
legs(A,7) :- A,call(A).
:- dynamic(insect/1).
insect(ant).
insect(bee).");
assert_prolog_success!(&mut wam, "assertz(legs(octopus,8)).");
assert_prolog_success!(&mut wam, "assertz( (legs(A,4) :- animal(A)) ).");
assert_prolog_success!(&mut wam, "assertz( (foo(X) :- X,call(X)) ).");
assert_prolog_success!(&mut wam, "catch(assertz(_),error(instantiation_error,_),true).");
assert_prolog_failure!(&mut wam, "assertz(_).");
assert_prolog_success!(&mut wam, "catch(assertz(4),error(type_error(callable,4),_),true).");
assert_prolog_failure!(&mut wam, "assertz(4).");
assert_prolog_success!(&mut wam, "catch(assertz( (foo :- 4) ),error(type_error(callable,4),_),true).");
assert_prolog_failure!(&mut wam, "assertz( (foo :- 4) ).");
assert_prolog_success!(&mut wam, "catch(assertz( (atom(_) :- true) ),error(permission_error(modify,static_procedure,atom/1),_),true).");
assert_prolog_failure!(&mut wam, "assertz( (atom(_) :- true) ).");
submit(&mut wam, "
:- dynamic(legs/2).
legs(A,4) :- animal(A).
legs(octopus,8).
legs(A,6) :- insect(A).
legs(spider,8).
legs(B,2) :- bird(B).
:- dynamic(insect/1).
insect(ant).
insect(bee).
:- dynamic(foo/1).
foo(X) :- call(X),call(X).
foo(X) :- call(X) -> call(X).");
assert_prolog_success!(&mut wam, "retract(legs(octopus,8)).");
assert_prolog_failure!(&mut wam, "retract(legs(spider,6)).");
assert_prolog_success!(&mut wam, "retract( (legs(X,2) :- T) ).",
[["X = _1","T = bird(_1)"]]);
assert_prolog_success!(&mut wam, "retract( (legs(X,Y) :- Z) ).",
[["X = _1","Y = 4","Z = animal(_1)"],
["X = _1","Y = 6","Z = insect(_1)"],
["X = spider","Y = 8","Z = true"]]);
assert_prolog_failure!(&mut wam, "retract( (legs(X,Y) :- Z) ).");
assert_prolog_success!(&mut wam, "retract(insect(I)).",
[["I = ant"],
["I = bee"]]);
assert_prolog_success!(&mut wam, "retract(( foo(A) :- A,call(A) )).",
[["A = call(A)"]]);
assert_prolog_success!(&mut wam, "foo(atom(atom)).");
assert_prolog_success!(&mut wam, "retract(( foo(C) :- A -> B )).",
[["A = call(_1)","B = call(_1)","C = _1"]]);
assert_prolog_failure!(&mut wam, "retract( (X :- in_eec(Y)) ).");
assert_prolog_success!(&mut wam, "catch(retract( (X :- in_eec(Y)) ),error(instantiation_error,_),true).");
assert_prolog_failure!(&mut wam, "retract( (4 :- X) ).");
assert_prolog_success!(&mut wam, "catch(retract( (4 :- X) ),error(type_error(callable,4),_),true).");
assert_prolog_failure!(&mut wam, "retract( (atom(X) :- X == '[]') ).");
assert_prolog_success!(&mut wam, "catch(retract( (atom(X) :- X == '[]') ),error(permission_error(modify,static_procedure,atom/1),_),true).");
/* This example shows why machine::compile::localize_self_calls is necessary. */
submit(&mut wam, "
:- dynamic(p/1).
p(a).
p(b).
p(c) :- p(d).
p(d).");
assert_prolog_success!(&mut wam, "p(X),retract(p(_)).",
[["X = a"],
["X = a"],
["X = a"]]);
submit(&mut wam, "
:- dynamic(foo/1).
foo(X) :- call(X),call(X).
foo(X) :- call(X) -> call(X).");
assert_prolog_success!(&mut wam, "abolish(foo/2).");
assert_prolog_failure!(&mut wam, "abolish(foo/_).");
assert_prolog_success!(&mut wam, "catch(abolish(foo/_),error(instantiation_error,abolish/1),true).");
assert_prolog_failure!(&mut wam, "abolish(foo).");
assert_prolog_success!(&mut wam, "catch(abolish(foo),error(type_error(predicate_indicator,foo),abolish/1),true).");
assert_prolog_failure!(&mut wam, "abolish(foo(_)).");
assert_prolog_success!(&mut wam, "catch(abolish(foo(_)),error(type_error(predicate_indicator,foo(_)),abolish/1),true).");
assert_prolog_failure!(&mut wam, "abolish(abolish/1).");
assert_prolog_success!(&mut wam, "catch(abolish(abolish/1),error(permission_error(modify,static_procedure,abolish/1),abolish/1),true).");
assert_prolog_success!(&mut wam, "atom_length('enchanted evening',N).",
[["N = 17"]]);
assert_prolog_success!(&mut wam,r"atom_length('enchanted\
evening',N).",
[["N = 17"]]);
assert_prolog_success!(&mut wam, "atom_length('',N).",
[["N = 0"]]);
assert_prolog_failure!(&mut wam, "atom_length('scarlet',5).");
assert_prolog_success!(&mut wam, "catch((atom_length(Atom,4),false),error(instantiation_error,_),true).");
assert_prolog_success!(&mut wam, "catch((atom_length(1.23,4),false),error(type_error(atom,1.23),_),true).");
assert_prolog_success!(&mut wam, "catch((atom_length(atom,'4'),false),error(type_error(integer,'4'),_),true).");
}
#[test]
fn test_queries_on_setup_call_cleanup()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, ":- use_module('src/prolog/lib/non_iso.pl').");
// Test examples from the ISO Prolog page for setup_call_catch.
assert_prolog_failure!(&mut wam, "setup_call_cleanup(false, _, _).");
assert_prolog_success!(&mut wam, "catch(setup_call_cleanup(true, throw(unthrown), _), error(instantiation_error, _), true).");
assert_prolog_success!(&mut wam, "setup_call_cleanup(true, true, (true ; throw(x))).");
assert_prolog_success!(&mut wam, "setup_call_cleanup(true, X = 1, X = 2).",
[["X = 1"]]);
assert_prolog_success!(&mut wam, "setup_call_cleanup(true, true, X = 2).",
[["X = 2"]]);
assert_prolog_success!(&mut wam, "catch(setup_call_cleanup(true, X=true, X), error(E, _), true).",
[["E = instantiation_error", "X = _1"]]);
assert_prolog_success!(&mut wam, "catch(setup_call_cleanup(X=throw(ex), true, X), E, true).",
[["E = ex", "X = _3"]]);
assert_prolog_success!(&mut wam, "setup_call_cleanup(true, true, false).");
assert_prolog_success!(&mut wam, "setup_call_cleanup(S = 1, G = 2, C = 3).",
[["S = 1", "G = 2", "C = 3"]]);
assert_prolog_success!(&mut wam, "setup_call_cleanup((S=1;S=2), G=3, C=4).",
[["S = 1", "G = 3", "C = 4"]]);
assert_prolog_success!(&mut wam, "setup_call_cleanup(S=1, G=2, writeq(S+G)).",
[["S = 1", "G = 2"]]);
assert_prolog_success!(&mut wam, "setup_call_cleanup(S=1, (G=2;G=3), writeq(S+G)).",
[["S = 1", "G = 2"],
["S = 1", "G = 3"]]);
assert_prolog_success!(&mut wam, "setup_call_cleanup(S=1, G=2, writeq(S+G>A+B)), A=3, B=4.",
[["S = 1", "G = 2", "A = 3", "B = 4"]]);
assert_prolog_success!(&mut wam,
"catch(setup_call_cleanup(S=1, (G=2;G=3,throw(x)), writeq(S+G)), E, true).",
[["S = 1", "G = 2", "E = _26"], ["G = _4", "E = x", "S = _1"]]);
assert_prolog_success!(&mut wam,
"setup_call_cleanup(S=1, (G=2;G=3),writeq(S+G>B)), B=4, !.",
[["S = 1", "B = 4", "G = 2"]]);
assert_prolog_success!(&mut wam,
"setup_call_cleanup(S=1,G=2,writeq(S+G>B)),B=3,!.",
[["S = 1", "G = 2", "B = 3"]]);
assert_prolog_success!(&mut wam,
"setup_call_cleanup(S=1,(G=2;false),writeq(S+G>B)),B=3,!.",
[["S = 1", "G = 2", "B = 3"]]);
assert_prolog_success!(&mut wam,
"setup_call_cleanup(S=1,(G=2;S=2),writeq(S+G>B)), B=3, !.",
[["S = 1", "B = 3", "G = 2"]]);
assert_prolog_failure!(&mut wam,
"setup_call_cleanup(S=1,(G=2;G=3), writeq(S+G>B)), B=4, !, throw(x).");
assert_prolog_success!(&mut wam,
"catch(setup_call_cleanup(true,throw(goal),throw(cl)), Pat, true).",
[["Pat = goal"]]);
assert_prolog_success!(&mut wam,
"catch(( setup_call_cleanup(true,(G=1;G=2),throw(cl)), throw(cont)), Pat, true).",
[["Pat = cont", "G = _1"]]);
// fails here.
assert_prolog_success!(&mut wam,
"setup_call_cleanup(true, (X=1;X=2), writeq(a)), setup_call_cleanup(true,(Y=1;Y=2),writeq(b)), !.",
[["Y = 1", "X = 1"]]);
}
#[test]
fn test_queries_on_call_with_inference_limit()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, ":- use_module('src/prolog/lib/non_iso.pl').");
assert_prolog_success!(&mut wam, "call_with_inference_limit(throw(error), 0, R).",
[["R = inference_limit_exceeded"]]);
assert_prolog_success!(&mut wam, "catch(call_with_inference_limit(throw(error), 1, R), error, true).");
assert_prolog_failure!(&mut wam, "call_with_inference_limit(g(X), 5, R).");
submit(&mut wam, "g(1). g(2). g(3). g(4). g(5).");
assert_prolog_success!(&mut wam, "call_with_inference_limit(g(X), 5, R).",
[["R = true", "X = 1"],
["R = true", "X = 2"],
["R = true", "X = 3"],
["R = true", "X = 4"],
["R = !", "X = 5"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(g(X), 5, R), call(true).",
[["R = true", "X = 1"],
["R = true", "X = 2"],
["R = true", "X = 3"],
["R = true", "X = 4"],
["R = !", "X = 5"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(g(X), 2, R).",
[["R = true", "X = 1"],
["R = true", "X = 2"],
["R = inference_limit_exceeded", "X = _1"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(g(X), 3, R1),
call_with_inference_limit(g(X), 5, R2).",
[["X = 1", "R1 = true", "R2 = !"],
["X = 2", "R1 = true", "R2 = !"],
["X = 3", "R1 = true", "R2 = !"],
["X = 4", "R1 = true", "R2 = !"],
["X = 5", "R1 = !", "R2 = !"]]);
submit(&mut wam, "f(X) :- call_with_inference_limit(g(X), 5, _).");
assert_prolog_success!(&mut wam, "call_with_inference_limit(f(X), 7, R).",
[["R = true", "X = 1"],
["R = true", "X = 2"],
["R = true", "X = 3"],
["R = true", "X = 4"],
["R = !", "X = 5"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(f(X), 6, R).",
[["R = true", "X = 1"],
["R = true", "X = 2"],
["R = true", "X = 3"],
["R = true", "X = 4"],
["R = inference_limit_exceeded", "X = _1"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(f(X), 4, R).",
[["R = true", "X = 1"],
["R = true", "X = 2"],
["R = inference_limit_exceeded", "X = _1"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(f(X), 3, R).",
[["R = true", "X = 1"],
["R = inference_limit_exceeded", "X = _1"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(f(X), 2, R).",
[["R = inference_limit_exceeded", "X = _1"]]);
submit(&mut wam, "e(X) :- call_with_inference_limit(f(X), 10, _).");
assert_prolog_success!(&mut wam, "call_with_inference_limit(e(X), 10, R).",
[["R = true", "X = 1"],
["R = true", "X = 2"],
["R = true", "X = 3"],
["R = true", "X = 4"],
["R = !", "X = 5"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(e(X), 8, R).",
[["R = true", "X = 1"],
["R = true", "X = 2"],
["R = true", "X = 3"],
["R = true", "X = 4"],
["R = inference_limit_exceeded", "X = _1"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(e(X), 6, R).",
[["R = true", "X = 1"],
["R = true", "X = 2"],
["R = inference_limit_exceeded", "X = _1"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(e(X), 5, R).",
[["R = true", "X = 1"],
["R = inference_limit_exceeded", "X = _1"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(e(X), 4, R).",
[["R = inference_limit_exceeded", "X = _1"]]);
submit(&mut wam, "f(X, R) :- call_with_inference_limit(g(X), 5, R).");
assert_prolog_success!(&mut wam, "call_with_inference_limit(f(X, R), 4, S).",
[["S = true", "X = 1", "R = true"],
["S = true", "X = 2", "R = true"],
["S = inference_limit_exceeded", "X = _1", "R = _2"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(f(X, R), 8, R).",
[["R = true", "X = 1"],
["R = true", "X = 2"],
["R = true", "X = 3"],
["R = true", "X = 4"],
["R = !", "X = 5"]]);
submit(&mut wam, "g(1). g(2). g(3). g(4). g(5). g(6).");
assert_prolog_success!(&mut wam, "call_with_inference_limit(f(X, R), 8, S).",
[["R = true", "X = 1", "S = true"],
["R = true", "X = 2", "S = true"],
["R = true", "X = 3", "S = true"],
["R = true", "X = 4", "S = true"],
["R = true", "X = 5", "S = true"],
["R = inference_limit_exceeded", "S = !", "X = _1"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(g(X), 2, R), call_with_inference_limit(g(X), 1, S).",
[["R = true", "X = 1", "S = !"],
["R = true", "X = 2", "S = !"],
["R = true", "X = 3", "S = !"],
["R = true", "X = 4", "S = !"],
["R = true", "X = 5", "S = !"],
["R = !", "X = 6", "S = !"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(g(X), 2, R), call_with_inference_limit(g(X), 1, R).",
[["R = !", "X = 6"]]);
assert_prolog_success!(&mut wam, "call_with_inference_limit(g(X), 1, R), call_with_inference_limit(g(X), 1, R).",
[["R = inference_limit_exceeded", "X = _1"]]);
}
#[test]
fn test_queries_on_dcgs()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, ":- use_module('src/prolog/lib/dcgs.pl').");
// test case by YeGoblynQueene from hacker news.
submit_code(&mut wam,
" ability(destroy, X) --> destroy(X).
destroy(X) --> [destroy], target(X).
target(X) --> [target], permanent(X).
permanent(X) --> [creature], creature(X).
permanent(X) --> [artifact], artifact(X).
permanent(X) --> [land], land(X).
spell(X) --> [sorcery], sorcery(X).
spell(X) --> [instant], instant(X).
creature('Llanowar Elves') --> [].
artifact('Ankh of Mishra') --> [].
land('Mountain') --> [].
% etc permanents
sorcery('Duress') --> [].
instant('Lightning Bolt') --> [].");
assert_prolog_success!(&mut wam, "phrase(ability(destroy, X), P).",
[["P = [destroy,target,creature]","X = 'Llanowar Elves'"],
["P = [destroy,target,artifact]","X = 'Ankh of Mishra'"],
["P = [destroy,target,land]","X = 'Mountain'"]]);
}
#[test]
fn test_queries_on_string_lists()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, ":- use_module('src/prolog/lib/non_iso.pl').");
// double_quotes is chars by default.
assert_prolog_success!(&mut wam, "variant(\"\", []).");
assert_prolog_failure!(&mut wam, "\"\" == [].");
assert_prolog_failure!(&mut wam, "\"abc\" == [].");
assert_prolog_success!(&mut wam, "variant(\"abc\", ['a', 'b', 'c']).");
assert_prolog_success!(&mut wam, "variant(\"abc\", ['a', 'b', c]).");
assert_prolog_success!(&mut wam, "variant(\"abc\", ['a', b, 'c']).");
assert_prolog_success!(&mut wam, "variant(\"abc\", [a, 'b', 'c']).");
assert_prolog_success!(&mut wam, "variant(\"abc\", [a, 'b', c]).");
assert_prolog_failure!(&mut wam, "\"abc\" == ['a', 'b', 'c'].");
assert_prolog_failure!(&mut wam, "\"abc\" == ['a', 'b', c].");
assert_prolog_failure!(&mut wam, "\"abc\" == ['a', b, 'c'].");
assert_prolog_failure!(&mut wam, "\"abc\" == [a, 'b', 'c'].");
assert_prolog_failure!(&mut wam, "\"abc\" == [a, 'b', c].");
assert_prolog_failure!(&mut wam, "\"koen\" == [k, o, e, n].");
assert_prolog_success!(&mut wam, "\"koen\" = [k, o, e, n].");
assert_prolog_success!(&mut wam, "variant(\"koen\", [k, o, e, n]).");
assert_prolog_success!(&mut wam, "variant(\"koen\", \"koen\").");
assert_prolog_success!(&mut wam, "\"koen\" = [k, o | X].",
[["X = [e,n]"]]);
assert_prolog_success!(&mut wam, "\"koen\" = [k, o | X], X = \"en\".",
[["X = [e,n]"]]);
assert_prolog_failure!(&mut wam, "\"koen\" = [k, o | X], X == \"en\".");
assert_prolog_success!(&mut wam, "\"koen\" = [k, o | X], variant(X, \"en\").",
[["X = [e,n]"]]);
assert_prolog_failure!(&mut wam, "X = \"abc\", Y = \"abc\", X == Y.");
assert_prolog_failure!(&mut wam, "partial_string(\"abc\", X), partial_string(\"abc\", Y), X == Y.");
assert_prolog_success!(&mut wam, "X = \"abc\", Y = \"abc\", variant(X, Y).");
assert_prolog_success!(&mut wam, "partial_string(\"abc\", X), partial_string(\"abc\", Y), variant(X, Y).");
submit(&mut wam, "matcher([a,b,c|X], ['d','e','f'|X]).");
assert_prolog_success!(&mut wam, "matcher(\"abcdef\", \"defdef\").");
assert_prolog_failure!(&mut wam, "matcher(\"abcdef\", \"defdff\").");
assert_prolog_success!(&mut wam, "matcher([X, Y, Z | W], [A, B, C | W]).",
[["A = d", "B = e", "C = f", "W = _1", "X = a", "Y = b", "Z = c"]]);
assert_prolog_failure!(&mut wam, "matcher([X, Y, Z | W], [X, B, C | W]).");
submit(&mut wam, "matcher([a,b,c|X], X).");
assert_prolog_success!(&mut wam, "matcher(\"abcdef\", X), X = [d,e,f|Y], variant(Y, []), X = \"def\".",
[["X = [d,e,f]", "Y = []"]]);
assert_prolog_success!(&mut wam, "matcher(\"abcdef\", X), X = [d,e,f|Y], variant(Y, []), variant(X, \"def\").",
[["X = [d,e,f]", "Y = []"]]);
assert_prolog_success!(&mut wam, "X = ['a', 'b', 'c' | \"def\"].",
[["X = [a,b,c,d,e,f]"]]);
assert_prolog_success!(&mut wam, "X = [a,b,c|\"abc\"].",
[["X = [a,b,c,a,b,c]"]]);
assert_prolog_success!(&mut wam, "set_prolog_flag(double_quotes, atom).");
assert_prolog_success!(&mut wam, "matcher(X, Y).",
[["X = [a,b,c|_1]", "Y = _1"]]);
assert_prolog_failure!(&mut wam, "matcher(\"abcdef\", Y).");
assert_prolog_success!(&mut wam, "set_prolog_flag(double_quotes, chars).");
assert_prolog_success!(&mut wam, "X = \"abc\", X = ['a' | Y], set_prolog_flag(double_quotes, atom).",
[["X = \"abc\"", "Y = \"bc\""]]);
// partial strings.
assert_prolog_success!(&mut wam, "set_prolog_flag(double_quotes, chars).");
assert_prolog_failure!(&mut wam, "Y = 5, partial_string(\"abc\", Y).");
assert_prolog_success!(&mut wam, "partial_string(\"abc\", X).",
[["X = [a,b,c|_]"]]);
assert_prolog_failure!(&mut wam, "partial_string(\"abc\", X), partial_string(\"abc\", Y), matcher(X, V),
matcher(Y, Z), V = Z.");
submit(&mut wam, "matcher([a, b, c | X], X).");
assert_prolog_success!(&mut wam, "partial_string(\"abc\", X), matcher(X, Y).",
[["X = [a,b,c|_]", "Y = _"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\", X), matcher(X, Y), Y = \"def\".",
[["X = [a,b,c,d,e,f]", "Y = [d,e,f]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\", X), matcher(X, Y), \"def\" = Y.",
[["X = [a,b,c,d,e,f]", "Y = [d,e,f]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\", X), matcher(X, Y), partial_string(\"def\", Y).",
[["X = [a,b,c,d,e,f|_]",
"Y = [d,e,f|_]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\", X), matcher(X, Y), partial_string(\"def\", Y),
Y = \"defghijkl\".",
[["X = [a,b,c,d,e,f,g,h,i,j,k,l]",
"Y = [d,e,f,g,h,i,j,k,l]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\", X), matcher(X, Y), Y = [d, e, f | G].",
[["X = [a,b,c,d,e,f|_]","Y = [d,e,f|_]","G = _"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\",X),matcher(X,Y),[d,e,f | G] = Y.",
[["X = [a,b,c,d,e,f|_]","Y = [d,e,f|_]","G = _"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\",X),matcher(X,Y),Y = [d,e,f | G], G = \"ghi\".",
[["X = [a,b,c,d,e,f,g,h,i]","Y = [d,e,f,g,h,i]","G = [g,h,i]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\",X),matcher(X,Y),Y = [d,e,f | G],
is_partial_string(Y),G = \"ghi\".",
[["X = [a,b,c,d,e,f,g,h,i]","Y = [d,e,f,g,h,i]","G = [g,h,i]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\",X),matcher(X,Y),Y = [d,e,f | G],
is_partial_string(Y),is_partial_string(G),G = \"ghi\".",
[["X = [a,b,c,d,e,f,g,h,i]","Y = [d,e,f,g,h,i]","G = [g,h,i]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\",X),partial_string(\"ababc\",Y),Y = [a,b|Z],
variant(X, Z).",
[["X = [a,b,c|_]","Y = [a,b,a,b,c|_]","Z = [a,b,c|_]"]]);
assert_prolog_failure!(&mut wam, "partial_string(\"abc\",X),partial_string(\"ababc\",Y),Y = [a,b|Z],
X == Z.");
assert_prolog_success!(&mut wam, "partial_string(\"abc\",X), X @> \"abc\".");
assert_prolog_failure!(&mut wam, "partial_string(\"abc\",X), \\+ variant(X, \"abc\").");
assert_prolog_failure!(&mut wam, "partial_string(\"abc\",X), X @< \"abc\".");
assert_prolog_success!(&mut wam, "partial_string(\"ab\",X),matcher(X,Y),Y = [a,b|V],
matcher(Y,Z),is_partial_string(Y).",
[["V = [c|_]","X = [a,b,c,a,b,c|_]","Y = [a,b,c|_]","Z = _"]]);
assert_prolog_success!(&mut wam, "partial_string(\"a\",X),matcher(X,Y).",
[["X = [a,b,c|_]","Y = _"]]);
assert_prolog_success!(&mut wam, "partial_string(\"a\",X),matcher(X,Y),is_partial_string(Y).",
[["X = [a,b,c|_]","Y = _"]]);
assert_prolog_success!(&mut wam, "partial_string(\"a\",X),matcher(X,Y),Y = \"def\".",
[["X = [a,b,c,d,e,f]","Y = [d,e,f]"]]);
submit(&mut wam, "matcher([a,b,c|X],X).
matcher([a,b,d|X],X).");
assert_prolog_success!(&mut wam, "partial_string(\"ab\",X),matcher(X,Y).",
[["X = [a,b,c|_]","Y = _"],
["X = [a,b,d|_]","Y = _"]]);
submit(&mut wam, "matcher([a,b,c,d|X],X).
matcher([a,c,d|X],X).");
assert_prolog_success!(&mut wam, "partial_string(\"ab\",X),matcher(X,Y).",
[["X = [a,b,c,d|_]","Y = _"]]);
assert_prolog_success!(&mut wam, "partial_string(\"a\",X),matcher(X,Y).",
[["X = [a,b,c,d|_]","Y = _"],
["X = [a,c,d|_]","Y = _"]]);
submit(&mut wam, "matcher([a,b,c,d|X],X).
matcher([a,c,d|X],X).
matcher([a,e,f|X],X).");
assert_prolog_success!(&mut wam, "partial_string(\"a\",X),matcher(X,Y).",
[["X = [a,b,c,d|_]","Y = _"],
["X = [a,c,d|_]","Y = _"],
["X = [a,e,f|_]","Y = _"]]);
assert_prolog_success!(&mut wam, "partial_string(\"a\",X),matcher(X,Y),Y = \" t\".",
[["X = [a,b,c,d,' ',t]","Y = [' ',t]"],
["X = [a,c,d,' ',t]","Y = [' ',t]"],
["X = [a,e,f,' ',t]","Y = [' ',t]"]]);
submit(&mut wam, "matcher([a,b,c|X],X) :- X = [].
matcher([a,b,c|X],X).");
assert_prolog_success!(&mut wam, "partial_string(\"abc\",X),matcher(X,Y).",
[["X = [a,b,c]","Y = []"],
["X = [a,b,c|_]","Y = _"]]);
assert_prolog_success!(&mut wam, "partial_string(\"a\",X),matcher(X,Y).",
[["X = [a,b,c]","Y = []"],
["X = [a,b,c|_]","Y = _"]]);
assert_prolog_failure!(&mut wam, "partial_string(\"abc\",X),partial_string(\"bc\",Y),X = [a|Y].");
submit(&mut wam, "matcher([a|X],X) :- matcher2(X,_).
matcher([b|X],X) :- matcher2(X,_).
matcher2([c|X],X).
matcher2([d|X],X).");
assert_prolog_success!(&mut wam, "partial_string(\"\",X),matcher(X,Y).",
[["X = [a,c|_]","Y = [c|_]"],
["X = [a,d|_]","Y = [d|_]"],
["X = [b,c|_]","Y = [c|_]"],
["X = [b,d|_]","Y = [d|_]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"a\",X),matcher(X,Y).",
[["X = [a,c|_]","Y = [c|_]"],
["X = [a,d|_]","Y = [d|_]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"b\",X),matcher(X,Y).",
[["X = [b,c|_]","Y = [c|_]"],
["X = [b,d|_]","Y = [d|_]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"bc\",X),matcher(X,Y).",
[["X = [b,c|_]","Y = [c|_]"]]);
submit(&mut wam, "f(\"appendy jones\").
f(\"appendy smithers jones\").
f(\"appendy o'toole\").");
assert_prolog_success!(&mut wam, "partial_string(\"appendy\",X),f(X).",
[["X = [a,p,p,e,n,d,y,' ',j,o,n,e,s]"],
["X = [a,p,p,e,n,d,y,' ',s,m,i,t,h,e,r,s,' ',j,o,n,e,s]"],
["X = [a,p,p,e,n,d,y,' ',o,'\\'',t,o,o,l,e]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\",X),partial_string(\"abcdef\",X).",
[["X = [a,b,c,d,e,f|_]"]]);
assert_prolog_success!(&mut wam, "partial_string(\"abc\",X),partial_string(\"abcdef\",X),X = \"abcdef\".",
[["X = [a,b,c,d,e,f]"]]);
}
#[test]
fn test_queries_on_attributed_variables()
{
let mut wam = Machine::new(readline::input_stream());
submit(&mut wam, "
:- module(my_mod, []).
:- use_module('src/prolog/lib/atts.pl').
:- attribute dif/1, frozen/1.");
assert_prolog_success!(&mut wam, "( put_atts(V, my_mod, dif(1)) ; put_atts(V, my_mod, dif(2)) ),
get_atts(V, my_mod, L).",
[["L = [dif(1)]", "V = _10"],
["L = [dif(2)]", "V = _10"]]);
assert_prolog_success!(&mut wam, "put_atts(V, my_mod, frozen(a)),
( put_atts(V, my_mod, dif(1))
; put_atts(V, my_mod, -frozen(a)), put_atts(V, my_mod, dif(2))
; put_atts(V, my_mod, dif(different)) ),
get_atts(V, my_mod, Ls).",
[["Ls = [frozen(a),dif(1)]", "V = _10"],
["Ls = [dif(2)]", "V = _10"],
["Ls = [frozen(a),dif(different)]", "V = _10"]]);
assert_prolog_success!(&mut wam, "put_atts(V, my_mod, [dif(1), dif(2), frozen(a)]),
( put_atts(V, my_mod, -dif(2)); put_atts(V, my_mod, -frozen(A)) ),
get_atts(V, my_mod, L).",
[["A = _71", "L = [frozen(a)]", "V = _25"],
["A = _71", "L = [dif(2)]", "V = _25"]]);
assert_prolog_success!(&mut wam, "put_atts(V, my_mod, [dif(1), dif(2), frozen(a), frozen(b)]),
( put_atts(V, my_mod, -dif(2)) ; put_atts(V, my_mod, -frozen(A)) ),
get_atts(V, my_mod, L).",
[["A = _111", "L = [frozen(b)]", "V = _29"],
["A = _111", "L = [dif(2)]", "V = _29"]]);
assert_prolog_success!(&mut wam, "put_atts(V, my_mod, [dif(1), dif(2), frozen(a), frozen(b)]),
get_atts(V, my_mod, -dif(1)).");
assert_prolog_success!(&mut wam, "put_atts(V, my_mod, [dif(1), dif(2), frozen(a), frozen(b)]),
get_atts(V, my_mod, -dif(3)).");
assert_prolog_success!(&mut wam, "put_atts(V, my_mod, [dif(1), dif(2), frozen(a), frozen(b)]),
get_atts(V, my_mod, dif(X)).",
[["X = 2", "V = _29"]]);
assert_prolog_success!(&mut wam, "put_atts(V, my_mod, [dif(1), dif(2), frozen(a), frozen(b)]),
put_atts(V, my_mod, -dif(A)), get_atts(V, my_mod, Ls).",
[["A = _112", "Ls = [frozen(b)]", "V = _29"]]);
assert_prolog_success!(&mut wam, "put_atts(V, my_mod, [dif(1), frozen(a), dif(2), frozen(b)]),
put_atts(V, my_mod, -dif(A)), get_atts(V, my_mod, Ls).",
[["A = _114", "Ls = [frozen(b)]", "V = _29"]]);
submit(&mut wam, ":- use_module('src/prolog/examples/minatotask.pl').");
assert_prolog_failure!(&mut wam, "ZDD = ( X -> b(true) ; ( Y -> b(true) ; b(false) ) ),
Vs = [X,Y],
variables_set_zdd(Vs, ZDD),
Vs = [1,1].");
assert_prolog_success!(&mut wam, "ZDD = ( X -> b(true) ; ( Y -> b(true) ; b(false) ) ),
Vs = [X,Y],
variables_set_zdd(Vs, ZDD),
X = 1.",
[["X = 1", "Y = 0", "Vs = [1,0]", "ZDD = (1->b(true);0->b(true);b(false))"]]);
assert_prolog_success!(&mut wam, "ZDD = ( X -> b(true) ; ( Y -> b(true) ; b(false) ) ),
Vs = [X,Y],
variables_set_zdd(Vs, ZDD),
X = 0.",
[["Vs = [0,_58]", "X = 0", "Y = _58", "ZDD = (0->b(true);_58->b(true);b(false))"]]);
}
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