Add dict.has_key + tests

src/runtime/dict.cpp

@@ -322,6 +322,7 @@ void setupDict() {
     dict_cls->giveAttr("clear", new BoxedFunction(boxRTFunction((void*)dictClear, NONE, 1)));
     dict_cls->giveAttr("copy", new BoxedFunction(boxRTFunction((void*)dictCopy, DICT, 1)));
 
+    dict_cls->giveAttr("has_key", new BoxedFunction(boxRTFunction((void*)dictContains, BOXED_BOOL, 2)));
     dict_cls->giveAttr("fromkeys",
                        new BoxedFunction(boxRTFunction((void*)dictFromkeys, DICT, 3, 1, false, false), { None }));
     dict_cls->giveAttr("items", new BoxedFunction(boxRTFunction((void*)dictItems, LIST, 1)));

test/tests/dict.py

@@ -138,3 +138,11 @@ try:
     assert 0
 except TypeError, e:
     print 'ok'
+
+# has_key
+
+d = {1:2, 3:4, 'a': 5}
+print d.has_key(1)
+print d.has_key(42)
+print d.has_key('a')
+print d.has_key('b')