def testExtendInt32WithIterable(self, message_module):
    """Test extending repeated int32 fields with iterable."""
    m = message_module.TestAllTypes()
    self.assertSequenceEqual([], m.repeated_int32)
    m.repeated_int32.extend(MessageTest.TestIterable([]))
    self.assertSequenceEqual([], m.repeated_int32)
    m.repeated_int32.extend(MessageTest.TestIterable([0]))
    self.assertSequenceEqual([0], m.repeated_int32)
    m.repeated_int32.extend(MessageTest.TestIterable([1, 2]))
    self.assertSequenceEqual([0, 1, 2], m.repeated_int32)
    m.repeated_int32.extend(MessageTest.TestIterable([3, 4]))
    self.assertSequenceEqual([0, 1, 2, 3, 4], m.repeated_int32)