Family relations section fully hint-ready (just a few minor things missing).

1 files changed, 35 insertions, 0 deletions

diff --git a/prolog/problems/family_relations/connected_3/common.py b/prolog/problems/family_relations/connected_3/common.py
index 9c0bef7..e6aa6dc 100644
--- a/prolog/problems/family_relations/connected_3/common.py
+++ b/prolog/problems/family_relations/connected_3/common.py
@@ -15,3 +15,38 @@ connected(X, Y, N) :-
     parent(Z, X) ),
   connected(Z, Y, N1).
 '''
+
+test_cases = [
+#    ('descendant(anna, X)',
+#        [{'X': 'jerry'}, {'X': 'elaine'}, {'X': 'morty'}, {'X': 'helen'}]),
+#    ('descendant(daniela, X)',
+#        [{'X': 'nevia'}, {'X': 'aleksander'}, {'X': 'margaret'}, {'X': 'ana'}, {'X': 'aleksandr'}]),
+#    ('descendant(X, william)',
+#        [{'X': 'vanessa'}, {'X': 'patricia'}, {'X': 'susan'}, {'X': 'john'}, {'X': 'michael'}, {'X': 'michelle'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems) + '\n' +
+            server.problems.load_facts('prolog', facts).facts)
+
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=code, timeout=1.0)
+        if not engine_id or 'error' in map(itemgetter(0), output):
+            # Engine creation failed, or syntax error in code.
+            return 0, len(test_cases)
+
+        n_correct = 0
+        for query, answers in test_cases:
+            # Limit inferences for each solution to curb unbounded recursion.
+            limited = 'call_with_inference_limit(({}), 100000, _)'.format(query)
+            if prolog.engine.check_answers(engine_id, query=limited, answers=answers, timeout=1.0):
+                n_correct += 1
+    finally:
+        if engine_id:
+            prolog.engine.destroy(engine_id)
+
+    passed = n_correct == len(test_cases)
+    hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}]
+    return passed, hints