3 files changed, 78 insertions, 0 deletions
diff --git a/prolog/problems/world_data/capital_2/common.py b/prolog/problems/world_data/capital_2/common.py
new file mode 100644
index 0000000..76fb985
--- /dev/null
+++ b/prolog/problems/world_data/capital_2/common.py
@@ -0,0 +1,52 @@
+from operator import itemgetter
+import socket
+import prolog.engine
+import prolog.util
+from server.hints import Hint
+import server.problems
+
+id = '10001'
+number = 10
+visible = True
+facts = 'mondial'
+
+solution = '''\
+capital(Country, Capital) :-
+    country(Country, _, Capital, _, _, _).
+'''
+
+hint_type = {
+}
+
+test_cases = [
+    ("capital('France', X)", [{'X': "'Paris'"}]),
+    ("capital('Turkmenistan', X)", [{'X': "'Ashgabat'"}]),
+    ("capital('Cocos Islands', X)", [{'X': "'West Island'"}]),
+    ("capital(X, 'Basseterre')", [{'X': "'Saint Kitts and Nevis'"}]),
+    ("capital(X, X)",
+        [{'X': "'Luxembourg'"}, {'X': "'Monaco'"}, {'X': "'Gibraltar'"},
+         {'X': "'Ceuta'"}, {'X': "'Melilla'"}, {'X': "'San Marino'"},
+         {'X': "'Hong Kong'"}, {'X': "'Macao'"}, {'X': "'Singapore'"},
+         {'X': "'Djibouti'"}]),
+]
+
+def test(code, aux_code):
+    n_correct = 0
+    engine_id = None
+    try:
+        engine_id, output = prolog.engine.create(code=code+aux_code, timeout=5.0)
+        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, inference_limit=None):
+                    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)}}]
+    if n_correct == len(test_cases):
+        hints += [{'id': 'final_hint'}]
+    return n_correct, len(test_cases), hints
diff --git a/prolog/problems/world_data/capital_2/en.py b/prolog/problems/world_data/capital_2/en.py
new file mode 100644
index 0000000..5ecd2ab
--- /dev/null
+++ b/prolog/problems/world_data/capital_2/en.py
@@ -0,0 +1,13 @@
+name = 'capital/2'
+slug = 'capitals'
+
+description = '''\
+<p><code>capital(X, Y)</code>: <code>Y</code> is the capital city of country <code>X</code>.</p>
+<pre>
+?- capital('Ireland', M).
+  Y = 'Dublin'.
+</pre>
+<p>Useful facts are given as <code>country(Name, ID, Capital, CapitalProvince, Size, Population)</code>.</p>
+'''
+
+hint = {}
diff --git a/prolog/problems/world_data/capital_2/sl.py b/prolog/problems/world_data/capital_2/sl.py
new file mode 100644
index 0000000..7b14a70
--- /dev/null
+++ b/prolog/problems/world_data/capital_2/sl.py
@@ -0,0 +1,13 @@
+name = 'capital/2'
+slug = 'glavna mesta'
+
+description = '''\
+<p><code>capital(X, Y)</code>: država <code>X</code> ima glavno mesto <code>Y</code>.</p>
+<pre>
+?- capital('Ireland', Y).
+  Y = 'Dublin'.
+</pre>
+<p>Uporabna dejstva so podana v obliki <code>country(Name, ID, Capital, CapitalProvince, Size, Population)</code>.</p>
+'''
+
+hint = {}