Support object_pairs_hook

Merge remote-tracking branch 'jnothman/object_pairs_hook' into 0.2-maint
Conflicts:
	msgpack/_msgpack.pyx
	test/test_pack.py
	test/test_sequnpack.py

test/test_obj.py

@@ -26,6 +26,16 @@ def test_decode_hook():
     unpacked = unpackb(packed, object_hook=_decode_complex, use_list=1)
     eq_(unpacked[1], 1+2j)
 
+def test_decode_pairs_hook():
+    packed = packb([3, {1: 2, 3: 4}])
+    prod_sum = 1 * 2 + 3 * 4
+    unpacked = unpackb(packed, object_pairs_hook=lambda l: sum(k * v for k, v in l))
+    eq_(unpacked[1], prod_sum)
+
+@raises(ValueError)
+def test_only_one_obj_hook():
+    unpackb(b'', object_hook=lambda x: x, object_pairs_hook=lambda x: x)
+
 @raises(ValueError)
 def test_bad_hook():
     packed = packb([3, 1+2j], default=lambda o: o)

test/test_pack.py

@@ -110,10 +110,9 @@ def test_odict():
     seq = [(b'one', 1), (b'two', 2), (b'three', 3), (b'four', 4)]
     od = odict(seq)
     assert_equal(unpackb(packb(od), use_list=1), dict(seq))
-    # After object_pairs_hook is implemented.
-    #def pair_hook(seq):
-    #    return seq
-    #assert_equal(unpackb(packb(od), object_pairs_hook=pair_hook), seq)
+    def pair_hook(seq):
+        return seq
+    assert_equal(unpackb(packb(od), object_pairs_hook=pair_hook), seq)
 
 
 if __name__ == '__main__':

test/test_sequnpack.py

@@ -28,6 +28,21 @@ def test_foobar():
         k += 1
     assert k == len(b'foobar')
 
+def test_foobar_skip():
+    unpacker = Unpacker(read_size=3, use_list=1)
+    unpacker.feed(b'foobar')
+    assert unpacker.unpack() == ord(b'f')
+    unpacker.skip()
+    assert unpacker.unpack() == ord(b'o')
+    unpacker.skip()
+    assert unpacker.unpack() == ord(b'a')
+    unpacker.skip()
+    try:
+        o = unpacker.unpack()
+        assert 0, "should raise exception"
+    except StopIteration:
+        assert 1, "ok"
+
 def test_maxbuffersize():
     nose.tools.assert_raises(ValueError, Unpacker, read_size=5, max_buffer_size=3)
     unpacker = Unpacker(read_size=3, max_buffer_size=3, use_list=1)