From 7bc5d05a777045dbd5c9feace7c52c074b146794 Mon Sep 17 00:00:00 2001
From: Aleksander Sadikov <aleksander.sadikov@fri.uni-lj.si>
Date: Sun, 29 May 2016 19:04:26 +0200
Subject: Denotational semantics, part #2 (mini algol): tests and translations
 added.

---
 prolog/problems/algol/algol_for_3/common.py | 42 ++++++++++++++++++++++++++++-
 prolog/problems/algol/algol_for_3/sl.py     | 18 +++++++++++++
 2 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100644 prolog/problems/algol/algol_for_3/sl.py

(limited to 'prolog/problems/algol/algol_for_3')

diff --git a/prolog/problems/algol/algol_for_3/common.py b/prolog/problems/algol/algol_for_3/common.py
index b48610b..38d5d45 100644
--- a/prolog/problems/algol/algol_for_3/common.py
+++ b/prolog/problems/algol/algol_for_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 = 178
 number = 30
 visible = True
@@ -177,5 +184,38 @@ eval(E1 * E2, State, Val) :- !,
 eval(E1 / E2, State, Val) :- !,
     eval(E1, State, V1),
     eval(E2, State, V2),
-    Val is V1 /  V2.
+    Val is V1 / V2.
 '''
+
+test_cases = [
+    ('findall(W, (W = [_], algol_for(_, W, [])), Words), Words == []',
+        [{}]),
+    ('algol_for(F, [begin,for,a,:=,0,&,a,<,9,&,a,:=,a+1,do,begin,print(a),a,:=,a+1,end,end], []), \
+                   apply([a=0], Out, F), msort(Out, OutSorted), \
+		           OutSorted == [a=10,printout=[0,2,4,6,8]]',
+        [{}]),
+    ('algol_for(F, [begin,for,a,:=,1,&,a,<,32,&,a,:=,a*2,do,begin,print(a),end,end], []), \
+                   apply([a=0], Out, F), msort(Out, OutSorted), \
+		           OutSorted == [a=32,printout=[1,2,4,8,16]]',
+        [{}]),
+]
+
+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
+
diff --git a/prolog/problems/algol/algol_for_3/sl.py b/prolog/problems/algol/algol_for_3/sl.py
new file mode 100644
index 0000000..17d91fc
--- /dev/null
+++ b/prolog/problems/algol/algol_for_3/sl.py
@@ -0,0 +1,18 @@
+name = 'algol_for/3'
+slug = 'interpreter za mini-algol s for stavkom'
+
+description = '''\
+<p>Razširi podano gramatiko za jezik mini-algol, da bo le-ta podprla uporabo stavka "for". Primer:</p>
+<pre>
+% for a := 0 & a < 5 & a := a + 1 do
+% begin
+%   print(a)
+% end
+?- _Program = [begin,for,a,:=,0,&,a,<,5,&,a,:=,a+1,do,begin,print(a),end,end],
+    algol_for(_F, _Program, []),
+    apply([a=2], Output, _F).
+  Output = [a=5,printout=[0,1,2,3,4]].
+</pre>
+'''
+
+hint = {}
-- 
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