Add tests for Prolog.{sorting,sets,license_plates}

18 files changed, 709 insertions, 3 deletions

diff --git a/prolog/problems/license_plates/checklicenseplate_3/common.py b/prolog/problems/license_plates/checklicenseplate_3/common.py
index c37e210..0480258 100644
--- a/prolog/problems/license_plates/checklicenseplate_3/common.py
+++ b/prolog/problems/license_plates/checklicenseplate_3/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 148
 number = 55
 visible = True
@@ -51,3 +55,43 @@ checkLicensePlate(LP, E1, E2) :-
   genexp148(MN2, E2),
   E1 =:= E2.
 '''
+
+test_cases = [
+    ('''checkLicensePlate([l, j, l, 3, '-', 2, 4, 2], E1, E2)''',
+        [{'E1': '-3', 'E2': '(-2-4)/2'}, {'E1': '3', 'E2': '(2+4)/2'},
+         {'E1': '-3*2', 'E2': '-4-2'}, {'E1': '3*2', 'E2': '4+2'},
+         {'E1': '-3*2+4', 'E2': '-2'}, {'E1': '3*2-4', 'E2': '2'}]),
+    ('''checkLicensePlate([k, r, a, 3, '-', 2, 1, 7], E1, E2)''',
+        [{'E1': '-3', 'E2': '-21/7'}, {'E1': '3', 'E2': '21/7'},
+         {'E1': '-3*2', 'E2': '1-7'}, {'E1': '3*2', 'E2': '-1+7'},
+         {'E1': '3*2+1', 'E2': '7'}, {'E1': '-3*2-1', 'E2': '-7'}]),
+    ('''checkLicensePlate([g, o, c, 8, '-', 2, 1, 3], E1, E2)''',
+        [{'E1': '-8', 'E2': '-2*(1+3)'}, {'E1': '8', 'E2': '2*(1+3)'},
+         {'E1': '-8/2+1', 'E2': '-3'}, {'E1': '8/2-1', 'E2': '3'},
+         {'E1': '-8/2', 'E2': '-1-3'}, {'E1': '8/2', 'E2': '1+3'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/license_plates/firstminus_2/common.py b/prolog/problems/license_plates/firstminus_2/common.py
index 20376d2..89fe3b0 100644
--- a/prolog/problems/license_plates/firstminus_2/common.py
+++ b/prolog/problems/license_plates/firstminus_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 147
 number = 54
 visible = True
@@ -10,3 +14,35 @@ firstMinus(L, L).
 firstMinus([X|T], [Y|T]) :-
   Y is -X.
 '''
+
+test_cases = [
+    ('firstMinus([2, 3, 4], X)',
+        [{'X': '[2, 3, 4]'}, {'X': '[-2, 3, 4]'}]),
+    ('firstMinus([5, 2, 3, 4], X)',
+        [{'X': '[5, 2, 3, 4]'}, {'X': '[-5, 2, 3, 4]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/license_plates/genexp_2/common.py b/prolog/problems/license_plates/genexp_2/common.py
index ecdc772..4b097f2 100644
--- a/prolog/problems/license_plates/genexp_2/common.py
+++ b/prolog/problems/license_plates/genexp_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 146
 number = 53
 visible = True
@@ -22,3 +26,44 @@ genexp(L, Exp) :-
   conc146(Before, [NExp|After], L1),
   genexp(L1, Exp).
 '''
+
+test_cases = [
+    ('genexp([1], X)',
+        [{'X': '1'}]),
+    ('genexp([1, 2], X)',
+        [{'X': '1*2'}, {'X': '1+2'}, {'X': '1-2'}, {'X': '1/2'}]),
+    ('genexp([1, 2, 3], X)',
+        [{'X': '1+2+3'}, {'X': '1+2-3'}, {'X': '(1+2)*3'}, {'X': '(1+2)/3'},
+         {'X': '1-2+3'}, {'X': '1-2-3'}, {'X': '(1-2)*3'}, {'X': '(1-2)/3'},
+         {'X': '1*2+3'}, {'X': '1*2-3'}, {'X': '1*2*3'}, {'X': '1*2/3'},
+         {'X': '1/2+3'}, {'X': '1/2-3'}, {'X': '1/2*3'}, {'X': '1/2/3'},
+         {'X': '1+(2+3)'}, {'X': '1-(2+3)'}, {'X': '1*(2+3)'}, {'X': '1/(2+3)'},
+         {'X': '1+(2-3)'}, {'X': '1-(2-3)'}, {'X': '1*(2-3)'}, {'X': '1/(2-3)'},
+         {'X': '1+2*3'}, {'X': '1-2*3'}, {'X': '1*(2*3)'}, {'X': '1/(2*3)'},
+         {'X': '1+2/3'}, {'X': '1-2/3'}, {'X': '1*(2/3)'}, {'X': '1/(2/3)'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/license_plates/getdigits_2/common.py b/prolog/problems/license_plates/getdigits_2/common.py
index 82fe033..4ae42ff 100644
--- a/prolog/problems/license_plates/getdigits_2/common.py
+++ b/prolog/problems/license_plates/getdigits_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 144
 number = 51
 visible = True
@@ -13,3 +17,37 @@ getdigits([X|T], [X|NT]) :-
 getdigits([_|T], NT) :-
   getdigits(T, NT).
 '''
+
+test_cases = [
+    ('getdigits([], X)',
+        [{'X': '[]'}]),
+    ('''getdigits([1, [], 2, a, b, -3, '+', 4], X)''',
+        [{'X': '[1, 2, -3, 4]'}]),
+    ('''getdigits([l, j, k, 3, '-', 2, 4, 2], X)''',
+        [{'X': '[3, 2, 4, 2]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/license_plates/joindigits_2/common.py b/prolog/problems/license_plates/joindigits_2/common.py
index 9ebc037..189f221 100644
--- a/prolog/problems/license_plates/joindigits_2/common.py
+++ b/prolog/problems/license_plates/joindigits_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 145
 number = 52
 visible = True
@@ -13,3 +17,36 @@ joindigits([X,Y|T], NT) :-
 joindigits([X,Y|T], [X|NT]) :-
   joindigits([Y|T], NT).
 '''
+
+test_cases = [
+    ('joindigits([2, 3, 1, 4], X)',
+        [{'X': '[2, 3, 1, 4]'}, {'X': '[2, 3, 14]'}, {'X': '[2, 31, 4]'}, {'X': '[2, 314]'},
+         {'X': '[23, 1, 4]'}, {'X': '[23, 14]'}, {'X': '[231, 4]'}, {'X': '[2314]'}]),
+    ('joindigits([2, 3, 1], X)',
+        [{'X': '[2, 3, 1]'}, {'X': '[2, 31]'}, {'X': '[23, 1]'}, {'X': '[231]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sets/diff_3/common.py b/prolog/problems/sets/diff_3/common.py
index fee93b2..e2706cb 100644
--- a/prolog/problems/sets/diff_3/common.py
+++ b/prolog/problems/sets/diff_3/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 130
 number = 37
 visible = True
@@ -18,3 +22,43 @@ diff([H|T], S2, D) :-
   memb130(H, S2),
   diff(T, S2, D).
 '''
+
+test_cases = [
+    ('diff([], [t, e, q], X)',
+        [{'X': '[]'}]),
+    ('diff([q, r, t], [], A), msort(A, X)',
+        [{'X': '[q, r, t]'}]),
+    ('diff([1, 2, 3, 8, 4, 6], [6, 0, 3, 4], A), msort(A, X)',
+        [{'X': '[1, 2, 8]'}]),
+    ('diff([1, 2, 3, 8, 7, 4, 6], [7, 8, 6], A), msort(A, X)',
+        [{'X': '[1, 2, 3, 4]'}]),
+    ('diff([1, 8, 2, 3, 7, 5], [7], A), msort(A, X)',
+        [{'X': '[1, 2, 3, 5, 8]'}]),
+    ('diff([t, w, q], [t, e, q, w, b], X)',
+        [{'X': '[]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sets/intersect_3/common.py b/prolog/problems/sets/intersect_3/common.py
index 501cdf3..ba90db7 100644
--- a/prolog/problems/sets/intersect_3/common.py
+++ b/prolog/problems/sets/intersect_3/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 129
 number = 36
 visible = True
@@ -17,3 +21,43 @@ intersect([H|T], S2, [H|I]) :-
 intersect([_|T], S2, I):-
   intersect(T, S2, I).
 '''
+
+test_cases = [
+    ('intersect([], [a, b, d], X)',
+        [{'X': '[]'}]),
+    ('intersect([g, h, r], [], X)',
+        [{'X': '[]'}]),
+    ('intersect([2, 5, 4, 7, 1, 9, 8], [0, 2, 5, 6, 7, 9, 1], A), msort(A, X)',
+        [{'X': '[1, 2, 5, 7, 9]'}]),
+    ('intersect([4, 7, 1, 9, 8], [4, 2, 5, 6, 7, 9, 1], A), msort(A, X)',
+        [{'X': '[1, 4, 7, 9]'}]),
+    ('intersect([9, 3, 4, 2, 1, 7], [a, b, d], X)',
+        [{'X': '[]'}]),
+    ('intersect([9, 3, 4, 2, 1, 7], [4, 2, 5, 6, 7, 9, 1], A), msort(A, X)',
+        [{'X': '[1, 2, 4, 7, 9]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sets/is_subset_2/common.py b/prolog/problems/sets/is_subset_2/common.py
index 4047146..a64d0f8 100644
--- a/prolog/problems/sets/is_subset_2/common.py
+++ b/prolog/problems/sets/is_subset_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 132
 number = 39
 visible = True
@@ -15,3 +19,39 @@ is_subset([H|T], S2) :-
   memb132(H, S2),
   is_subset(T, S2).
 '''
+
+test_cases = [
+    ('is_subset(X, [])',
+        [{'X': '[]'}]),
+    ('is_subset([2, 1, 3], [3, 2, 1, 4, 6, 7])',
+        [{}]),
+    ('\+ is_subset([2, 1, 0, 3], [3, 2, 1, 4, 6, 7])',
+        [{}]),
+    ('is_subset([3, 2, 1, 4, 6, 7], [3, 2, 1, 4, 6, 7])',
+        [{}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sets/is_superset_2/common.py b/prolog/problems/sets/is_superset_2/common.py
index 86e5dc7..abd3cfb 100644
--- a/prolog/problems/sets/is_superset_2/common.py
+++ b/prolog/problems/sets/is_superset_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 131
 number = 38
 visible = True
@@ -15,3 +19,39 @@ is_superset(S1, [H|T]) :-
   memb131(H, S1),
   is_superset(S1, T).
 '''
+
+test_cases = [
+    ('is_superset([], X)',
+        [{'X': '[]'}]),
+    ('is_superset([3, 2, 1, 4, 6, 7], [2, 1, 3])',
+        [{}]),
+    ('\+ is_superset([3, 2, 1, 4, 6, 7], [2, 1, 0, 3])',
+        [{}]),
+    ('is_superset([3, 2, 1, 4, 6, 7], [3, 2, 1, 4, 6, 7])',
+        [{}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sets/powerset_2/common.py b/prolog/problems/sets/powerset_2/common.py
index c825430..77801d7 100644
--- a/prolog/problems/sets/powerset_2/common.py
+++ b/prolog/problems/sets/powerset_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 134
 number = 41
 visible = True
@@ -15,3 +19,37 @@ subset134([_|T], T1) :-
 powerset(Set, PowerSet) :-
   findall(S, subset134(Set, S), PowerSet).
 '''
+
+test_cases = [
+    ('powerset([], X)',
+        [{'X': '[[]]'}]),
+    ('powerset([1, 2], A), length(A, 4), lists:flatten(A, Y), msort(Y, X)',
+        [{'X': '[1, 1, 2, 2]'}]),
+    ('powerset([1, 2, 3], A), length(A, 8), lists:flatten(A, Y), msort(Y, X)',
+        [{'X': '[1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sets/subset_2/common.py b/prolog/problems/sets/subset_2/common.py
index 130d87b..99d0799 100644
--- a/prolog/problems/sets/subset_2/common.py
+++ b/prolog/problems/sets/subset_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 133
 number = 40
 visible = True
@@ -12,3 +16,53 @@ subset([H|T], [H|T1]) :-
 subset([_|T], T1) :-
   subset(T, T1).
 '''
+
+test_cases = [
+    ('subset([], X)',
+        [{'X': '[]'}]),
+    ('subset([1, 3, 5, 7], A), msort(A, X)',
+        [{'X': '[]'}, {'X': '[7]'}, {'X': '[5]'}, {'X': '[5, 7]'}, {'X': '[3]'},
+         {'X': '[3, 7]'}, {'X': '[3, 5]'}, {'X': '[3, 5, 7]'}, {'X': '[1]'},
+         {'X': '[1, 7]'}, {'X': '[1, 5]'}, {'X': '[1, 5, 7]'}, {'X': '[1, 3]'},
+         {'X': '[1, 3, 7]'}, {'X': '[1, 3, 5]'}, {'X': '[1, 3, 5, 7]'}]),
+    ('subset([8, 4, 6, 2], A), msort(A, X)',
+        [{'X': '[]'}, {'X': '[2]'}, {'X': '[6]'}, {'X': '[2, 6]'}, {'X': '[4]'},
+         {'X': '[2, 4]'}, {'X': '[4, 6]'}, {'X': '[2, 4, 6]'}, {'X': '[8]'},
+         {'X': '[2, 8]'}, {'X': '[6, 8]'}, {'X': '[2, 6, 8]'}, {'X': '[4, 8]'},
+         {'X': '[2, 4, 8]'}, {'X': '[4, 6, 8]'}, {'X': '[2, 4, 6, 8]'}]),
+    ('subset([5, 6, 7, 0, 2], A), msort(A, X)',
+        [{'X': '[]'}, {'X': '[2]'}, {'X': '[0]'}, {'X': '[0, 2]'}, {'X': '[7]'},
+         {'X': '[2, 7]'}, {'X': '[0, 7]'}, {'X': '[0, 2, 7]'}, {'X': '[6]'},
+         {'X': '[2, 6]'}, {'X': '[0, 6]'}, {'X': '[0, 2, 6]'}, {'X': '[6, 7]'},
+         {'X': '[2, 6, 7]'}, {'X': '[0, 6, 7]'}, {'X': '[0, 2, 6, 7]'},
+         {'X': '[5]'}, {'X': '[2, 5]'}, {'X': '[0, 5]'}, {'X': '[0, 2, 5]'},
+         {'X': '[5, 7]'}, {'X': '[2, 5, 7]'}, {'X': '[0, 5, 7]'},
+         {'X': '[0, 2, 5, 7]'}, {'X': '[5, 6]'}, {'X': '[2, 5, 6]'},
+         {'X': '[0, 5, 6]'}, {'X': '[0, 2, 5, 6]'}, {'X': '[5, 6, 7]'},
+         {'X': '[2, 5, 6, 7]'}, {'X': '[0, 5, 6, 7]'}, {'X': '[0, 2, 5, 6, 7]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sets/union_3/common.py b/prolog/problems/sets/union_3/common.py
index 506913a..774c8cf 100644
--- a/prolog/problems/sets/union_3/common.py
+++ b/prolog/problems/sets/union_3/common.py
@@ -45,9 +45,7 @@ def test(program, solved_problems):
         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:
-                # 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):
+                if prolog.engine.check_answers(engine_id, query=query, answers=answers, timeout=1.0):
                     n_correct += 1
     finally:
         if engine_id:
diff --git a/prolog/problems/sorting/is_sorted_1/common.py b/prolog/problems/sorting/is_sorted_1/common.py
index 8feb549..9213ddc 100644
--- a/prolog/problems/sorting/is_sorted_1/common.py
+++ b/prolog/problems/sorting/is_sorted_1/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 121
 number = 28
 visible = True
@@ -12,3 +16,45 @@ is_sorted([H1,H2|T]) :-
   H1 =< H2,
   is_sorted([H2|T]).
 '''
+
+test_cases = [
+    ('is_sorted([])',
+        [{}]),
+    ('is_sorted([5, 6, 13, 555, 2111, 2112])',
+        [{}]),
+    ('is_sorted([2, 5, 5, 13, 555, 2111, 2112])',
+        [{}]),
+    ('is_sorted([-2])',
+        [{}]),
+    ('is_sorted([-42, -42, -42, -42])',
+        [{}]),
+    ('\+ is_sorted([3, 4, 5, 6, 1, 2, 3])',
+        [{}]),
+    ('\+ is_sorted([3, 4, 5, 6, 1, 2, 3, 0])',
+        [{}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sorting/isort_2/common.py b/prolog/problems/sorting/isort_2/common.py
index f2c4244..6041b35 100644
--- a/prolog/problems/sorting/isort_2/common.py
+++ b/prolog/problems/sorting/isort_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 123
 number = 30
 visible = True
@@ -17,3 +21,39 @@ isort([H|T], SL) :-
   isort(T, ST),
   sins123(H, ST, SL).
 '''
+
+test_cases = [
+    ('isort([], X)',
+        [{'X': '[]'}]),
+    ('isort([5, 3, 5, 5, 1, 2, 0], X)',
+        [{'X': '[0, 1, 2, 3, 5, 5, 5]'}]),
+    ('isort([2, 1, 3, 5, 6, 0, 22, 3], X)',
+        [{'X': '[0, 1, 2, 3, 3, 5, 6, 22]'}]),
+    ('isort([5, 4, 3, 2, 1], X)',
+        [{'X': '[1, 2, 3, 4, 5]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sorting/pivoting_4/common.py b/prolog/problems/sorting/pivoting_4/common.py
index dd1a1a9..0e9afaa 100644
--- a/prolog/problems/sorting/pivoting_4/common.py
+++ b/prolog/problems/sorting/pivoting_4/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 124
 number = 31
 visible = True
@@ -14,3 +18,39 @@ pivoting(P, [H|T], S, [H|G]) :-
   H > P,
   pivoting(P, T, S, G).
 '''
+
+test_cases = [
+    ('pivoting(5, [], A, B)',
+        [{'A': '[]', 'B': '[]'}]),
+    ('pivoting(5, [6, 7, 6], A, B)',
+        [{'A': '[]', 'B': '[6, 7, 6]'}]),
+    ('pivoting(4, [2, 1, 8, 9, 3, 4, 2], A, B)',
+        [{'A': '[2, 1, 3, 4, 2]', 'B': '[8, 9]'}]),
+    ('pivoting(4, [22, 1, 0, 8, 3, 5, 7, -2], A, B)',
+        [{'A': '[1, 0, 3, -2]', 'B': '[22, 8, 5, 7]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sorting/quick_sort_2/common.py b/prolog/problems/sorting/quick_sort_2/common.py
index 4afc8fa..b1449f1 100644
--- a/prolog/problems/sorting/quick_sort_2/common.py
+++ b/prolog/problems/sorting/quick_sort_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 125
 number = 32
 visible = True
@@ -23,3 +27,39 @@ quick_sort([Pivot|T], Sorted) :-
   quick_sort(Greater, SortedGreater),
   conc125(SortedSmaller, [Pivot|SortedGreater], Sorted).
 '''
+
+test_cases = [
+    ('quick_sort([], X)',
+        [{'X': '[]'}]),
+    ('quick_sort([5, 3, 5, 5, 1, 2, 0], X)',
+        [{'X': '[0, 1, 2, 3, 5, 5, 5]'}]),
+    ('quick_sort([2, 1, 3, 5, 6, 0, 22, 3], X)',
+        [{'X': '[0, 1, 2, 3, 3, 5, 6, 22]'}]),
+    ('quick_sort([5, 4, 3, 2, 1], X)',
+        [{'X': '[1, 2, 3, 4, 5]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sorting/sins_3/common.py b/prolog/problems/sorting/sins_3/common.py
index ab592ea..4c707ca 100644
--- a/prolog/problems/sorting/sins_3/common.py
+++ b/prolog/problems/sorting/sins_3/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 122
 number = 29
 visible = True
@@ -13,3 +17,41 @@ sins(X, [Y|T], [Y|L]) :-
   X > Y,
   sins(X, T, L).
 '''
+
+test_cases = [
+    ('sins(4, [], X)',
+        [{'X': '[4]'}]),
+    ('sins(4, [1, 2, 5, 6, 8], X)',
+        [{'X': '[1, 2, 4, 5, 6, 8]'}]),
+    ('sins(8, [1, 2, 3, 4, 5, 6, 7], X)',
+        [{'X': '[1, 2, 3, 4, 5, 6, 7, 8]'}]),
+    ('sins(1, [2, 3, 4, 5, 6, 7], X)',
+        [{'X': '[1, 2, 3, 4, 5, 6, 7]'}]),
+    ('sins(2, [2, 3, 4, 5, 6, 7], X)',
+        [{'X': '[2, 2, 3, 4, 5, 6, 7]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []
diff --git a/prolog/problems/sorting/slowest_sort_ever_2/common.py b/prolog/problems/sorting/slowest_sort_ever_2/common.py
index fc8f980..72e25e2 100644
--- a/prolog/problems/sorting/slowest_sort_ever_2/common.py
+++ b/prolog/problems/sorting/slowest_sort_ever_2/common.py
@@ -1,5 +1,9 @@
 # coding=utf-8
 
+from operator import itemgetter
+import prolog.engine
+import server.problems
+
 id = 126
 number = 33
 visible = True
@@ -24,3 +28,39 @@ slowest_sort_ever(L, S) :-
   permute126(L, S),
   is_sorted126(S).
 '''
+
+test_cases = [
+    ('slowest_sort_ever([], X)',
+        [{'X': '[]'}]),
+    ('slowest_sort_ever([5, 3, 5, 1], X)',
+        [{'X': '[1, 3, 5, 5]'}]),
+    ('slowest_sort_ever([2, 1, 5, 6], X)',
+        [{'X': '[1, 2, 5, 6]'}]),
+    ('slowest_sort_ever([5, 4, 3, 2], X)',
+        [{'X': '[2, 3, 4, 5]'}]),
+]
+
+def test(program, solved_problems):
+    code = (program + '\n' +
+            server.problems.solutions_for_problems('prolog', solved_problems))
+
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=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
+    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
+
+def hint(program, solved_problems):
+    # TODO
+    return []