def METHOD_NAME(self):
    data = self.minimal_data.copy()
    # Both numbers are British local numbers
    data["phone_number"] = "07 914721389"
    data["another_phone_number"] = "0344493 0787"  # British Airways
    self.assertTrue(AnotherShippingAddressForm(data).is_valid())
    # Both numbers are local German numbers
    data["phone_number"] = "0176 968 426 71"
    data["another_phone_number"] = "07032 15 49225"  # IBM Germany
    self.assertFalse(AnotherShippingAddressForm(data).is_valid())
    # One number is British number, another is German number
    data["phone_number"] = "07 914721389"
    data["another_phone_number"] = "0176 968 426 71"
    self.assertFalse(AnotherShippingAddressForm(data).is_valid())
    # As previous case, but numbers are reversed
    data["phone_number"] = "0176 968 426 71"
    data["another_phone_number"] = "07 914721389"
    self.assertFalse(AnotherShippingAddressForm(data).is_valid())