def test_sign_part_needs_force(self, run_command,
                                   linker_signed_arm64_needs_force):
        linker_signed_arm64_needs_force.return_value = True
        part = model.CodeSignedProduct('Test.app', 'test.signing.app')
        signing.sign_part(self.paths, self.config, part)
        run_command.assert_called_once_with([
            'codesign', '--sign', '[IDENTITY]', '--force', '--timestamp',
            '--requirements', '=designated => identifier "test.signing.app"',
            '/$W/Test.app'
        ])