def test_construction_from_string(self):
result = DatetimeTZDtype('datetime64[ns, US/Eastern]')
self.assertTrue(is_dtype_equal(self.dtype, result))
result = DatetimeTZDtype.construct_from_string(
'datetime64[ns, US/Eastern]')
self.assertTrue(is_dtype_equal(self.dtype, result))
self.assertRaises(TypeError,
lambda: DatetimeTZDtype.construct_from_string('foo'))
