def METHOD_NAME(self):
    """Test to mask glaciated (NE mask)"""
    result = mask_glaciated(self.arr, mask_out='glaciated')
    expected = np.ma.masked_array(self.data2,
                                  mask=np.array([[True, True],
                                                 [False, False]]))
    self.assert_array_equal(result.data, expected)