Tests added for CLP(R) set of exercises.

1 files changed, 39 insertions, 1 deletions

diff --git a/prolog/problems/clp_r/max_sum_2/common.py b/prolog/problems/clp_r/max_sum_2/common.py
index 3f90b40..a5e236f 100644
--- a/prolog/problems/clp_r/max_sum_2/common.py
+++ b/prolog/problems/clp_r/max_sum_2/common.py
@@ -1,8 +1,15 @@
 # coding=utf-8
 
+from operator import itemgetter
+import socket
+
+import prolog.engine
+import prolog.util
+from server.hints import Hint, HintPopup
+
 id = 156
 number = 66
-visible = False
+visible = True
 facts = None
 
 solution = '''\
@@ -11,3 +18,34 @@ max_sum([_], S) :-
 max_sum([A,B|T], S) :-
     { S >= A + B },
     max_sum([B|T], S).'''
+
+test_cases = [
+    ('max_sum([4.2, 5.1], X), abs(X - 9.3) =< 1e-8',
+        [{}]),
+    ('max_sum([4.5, -1.9, 1.3, -2.5, 3.5], X), abs(X - 2.6) =< 1e-8',
+        [{}]),
+    ('max_sum([7.5, 8.8, 4.2, 6.5, 2.2], X), abs(X - 16.3) =< 1e-8',
+        [{}]),
+    ('max_sum([-2.8, -2.2, 5.5, -2.2, 8.5, 0.7], X), abs(X - 9.2) =< 1e-8',
+        [{}]),
+]
+
+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
+