Add test for .skip()

msgpack/_msgpack.pyx

@@ -451,7 +451,7 @@ cdef class Unpacker(object):
         else:
             self.file_like = None
 
-    cdef _unpack(self, bint construct):
+    cdef object _unpack(self, bint construct):
         cdef int ret
         cdef object obj
         while 1:

test/test_sequnpack.py

@@ -28,6 +28,20 @@ def test_foobar():
         k += 1
     assert k == len(b'foobar')
 
+def test_foobar_skip():
+    unpacker = Unpacker(read_size=3)
+    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)