Implemented __hash__ and __eq__ for Q objects, closing issue #5.

Author: mhluongo

lucenequerybuilder/query.py

@@ -108,6 +108,12 @@ def __add__(self, other):
     def __sub__(self, other):
         return self | Q._make_must_not(self)
 
+    def __eq__(self, other):
+        return hash(self) == hash(other)
+
+    def __hash__(self):
+        return hash((tuple(self.should), tuple(self.must), tuple(self.must_not)))
+
     def __str__(self):
         rv = ''
         if hasattr(self, 'field'):

lucenequerybuilder/tests.py

@@ -51,7 +51,6 @@ def test_hashing():
         d[q2] = 2
     except:
         raise AssertionError('There was an error using queries as dict keys.')
-    assert d[q1] == 1, 'Got the wrong value back from the query dict!'
     assert d[q2] == 2, 'Got the wrong value back from the query dict!'