/** * @test */ public function to_string_also_mentions_the_expected_exception_message() { $expectedMessage = 'the expected message'; $constraint = new ConfigurationValuesAreInvalidConstraint(new AlwaysValidConfiguration(), $expectedMessage); $expectedResult = 'is invalid for the given configuration (expected exception message: ' . $expectedMessage . ')'; $this->assertSame($expectedResult, $constraint->toString()); }