1 files changed, 40 insertions, 0 deletions
diff --git a/prolog/problems/dcg/number_3/common.py b/prolog/problems/dcg/number_3/common.py
index b4a9f58..82981d5 100644
--- a/prolog/problems/dcg/number_3/common.py
+++ b/prolog/problems/dcg/number_3/common.py
@@ -1,3 +1,10 @@
+from operator import itemgetter
+import socket
+
+import prolog.engine
+import prolog.util
+from server.hints import Hint, HintPopup
+
 id = 167
 number = 60
 visible = True
@@ -27,3 +34,36 @@ l2n167([H|T], S, N) :-
     S1 is S*10+H,
     l2n167(T, S1, N).
 '''
+
+test_cases = [
+    ('number(N, [0], []), N == 0',
+        [{}]),
+    ('number(N, [3,4,1,5], []), N == 3415',
+        [{}]),
+    ('number(N, [9,8,7], []), N == 987',
+        [{}]),
+    ('W = [_], number(0, W, []), W == [0]',
+        [{}]),
+    ('W = [_,_], number(62, W, []), W == [6,2]',
+        [{}]),
+]
+
+def test(code, aux_code):
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=code+aux_code, timeout=1.0)
+        if engine_id is not None and 'error' not in map(itemgetter(0), output):
+            # Engine successfully created, and no syntax error in program.
+            for query, answers in test_cases:
+                if prolog.engine.check_answers(engine_id, query=query, answers=answers, timeout=1.0):
+                    n_correct += 1
+    except socket.timeout:
+        pass
+    finally:
+        if engine_id:
+            prolog.engine.destroy(engine_id)
+
+    hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}]
+    return n_correct, len(test_cases), hints
+