File-oriented testing

inspired by #2191 but for the `run_top_level_test_with_args`s and  `run_top_level_test_no_args instead of the `load_module_test`s

tests/scryer/main.rs

@@ -1,3 +1,17 @@
 mod helper;
 mod issues;
 mod src_tests;
+
+/// to generate new reference output files into dump/ run `TRYCMD=dump cargo test -- cli_test`
+/// check that the output is as expected, then move them next to the .toml file
+///
+/// to re-generate reference output files run `TRYCMD=overwrite cargo test -- cli_test`
+/// then check that the changes are as expected e.g. by looking at the `git diff`
+#[test]
+fn cli_tests() {
+    trycmd::TestCases::new()
+        .default_bin_name("scryer-prolog")
+        .case("tests/scryer/cli/issues/*.toml")
+        .skip("tests/scryer/cli/issues/singleton_warning.toml") // wrong line number
+        .case("tests/scryer/cli/src_tests/*.toml");
+}