add tests for issue 3048

tests/scryer/cli/issues/issue_3048.in/compare.pl

@@ -0,0 +1,8 @@
+:- use_module(library(format)).
+
+
+test :- compare(_, ("0"-'2'), ("1"-'1')).
+
+?- test.
+   false, unexpected.
+   true.

tests/scryer/cli/issues/issue_3048.in/compare_get_assoc.pl

@@ -0,0 +1,12 @@
+get_assoc(Key, t(K,V,_,L,R), Val) :-
+    compare(Rel, Key, K),
+    get_assoc(Rel, Key, V, L, R, Val).
+
+get_assoc(=, _, Val, _, _, Val).
+get_assoc(>, Key, _, _, Tree, Val) :- get_assoc(Key, Tree, Val).
+
+test :- get_assoc("1"-'0', t("0"-'2',_, _, t(_,_,_,t,t), t("1"-'0',_,_,t,t)), _).
+
+?- test.
+   false, unexpected.
+   true.

tests/scryer/cli/issues/issue_3048.in/minimize1.pl

@@ -0,0 +1,39 @@
+:- use_module(library(format)).
+
+% is_assoc copied from library(assoc) and renamed to is_assoc_
+% and `% format("~w~n", [is_assoc_(R,RMin,Max,RDepth)]),` added
+
+is_assoc_(Assoc) :-
+    is_assoc_(Assoc, _Min, _Max, _Depth).
+
+is_assoc_(t,X,X,0) :- !.
+is_assoc_(t(K,_,-,t,t),K,K,1) :- !, ground(K).
+is_assoc_(t(K,_,>,t,t(RK,_,-,t,t)),K,RK,2) :-
+    % Ensure right side Key is 'greater' than K
+    !, ground((K,RK)), K @< RK.
+
+is_assoc_(t(K,_,<,t(LK,_,-,t,t),t),LK,K,2) :-
+    % Ensure left side Key is 'less' than K
+    !, ground((LK,K)), LK @< K.
+
+is_assoc_(t(K,_,B,L,R),Min,Max,Depth) :-
+    is_assoc_(L,Min,LMax,LDepth),
+    % format("~w~n", [is_assoc_(R,RMin,Max,RDepth)]),
+    is_assoc_(R,RMin,Max,RDepth),
+    % Ensure Balance matches depth
+    compare(Rel,RDepth,LDepth),
+    balance(Rel,B),
+    % Ensure ordering
+    ground((LMax,K,RMin)),
+    LMax @< K,
+    K @< RMin,
+    Depth is max(LDepth, RDepth)+1.
+
+balance(=,-).
+balance(>,>).
+balance(<,<).
+
+test :- is_assoc_(t(2,1,-,t(1,1,-,t,t),t(3,1,-,t,t))).
+
+?- test.
+   true.

tests/scryer/cli/issues/issue_3048.in/minimize_final.pl

@@ -0,0 +1,6 @@
+a(t(K),K) :- ground(K).
+
+test :- a(t(3), M), M=M.
+
+?- test.
+   true.

tests/scryer/cli/issues/issue_3048.in/original.pl

@@ -0,0 +1,24 @@
+:- use_module(library(assoc)).
+:- use_module(library(lists)).
+:- use_module(library(iso_ext)).
+
+put([_], _).
+put([Old, New | Tail], Idx) :-
+  put_assoc(Idx, Old, 1, New),
+  IdxP is Idx +1,
+  put([New |Tail], IdxP).
+
+run(Max, Bad) :- 
+  empty_assoc(A),
+  length(As, Max),
+  put([A|As], 1),
+  findall(Idx, (nth0(Idx, [A|As], Assoc), \+ is_assoc(Assoc)), Bad).
+
+
+?- N = 20, run(N, Bad).
+   N = 20, Bad = [3,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20], unexpected
+   ; false.
+   N = 20, Bad = []
+   ; false.
+
+test :- run(20, []).

tests/scryer/cli/issues/issue_3048.in/original_alt.pl

@@ -0,0 +1,22 @@
+:- use_module(library(assoc)).
+:- use_module(library(lists)).
+:- use_module(library(iso_ext)).
+:- use_module(library(between)).
+
+p(Idx, Idx-1).
+
+test(N) :- 
+  numlist(N, As),
+  maplist(p, As, Bs),
+  list_to_assoc(Bs, Assoc),
+  is_assoc(Assoc).
+
+run(Max, Bad) :-
+  numlist(Max, Num),
+  findall(N, (member(N, [0|Num]), \+ test(N)), Bad).
+
+?- N = 20, run(N, Bad).
+   Bad = [3,4,6,7,8,9,10,12,13,14,15,16,17,18,19,20], unexpected.
+   N = 20, Bad = [].
+
+test :- run(20, []).

tests/scryer/cli/issues/issue_3048.in/pair_string_key.pl

@@ -0,0 +1,12 @@
+:- use_module(library(assoc)).
+
+test :-
+  empty_assoc(A1),
+  put_assoc(([a]-1), A1, 1, A2),
+  put_assoc(([a]-2), A2, 1, A3),
+  put_assoc(([b]-1), A3, 1, _).
+  
+
+?- test.
+   false, unexpected.
+   true.