$slug]; if ($domain !== null) { $expectedAdditional['domain'] = $domain; } $e = NonUniqueSlugException::fromSlug($slug, $domain); self::assertEquals($expectedMessage, $e->getMessage()); self::assertEquals($expectedMessage, $e->getDetail()); self::assertEquals('Invalid custom slug', $e->getTitle()); self::assertEquals('INVALID_SLUG', $e->getType()); self::assertEquals(400, $e->getStatus()); self::assertEquals($expectedAdditional, $e->getAdditionalData()); } public function provideMessages(): iterable { yield 'without domain' => [ 'Provided slug "foo" is already in use.', 'foo', null, ]; yield 'with domain' => [ 'Provided slug "baz" is already in use for domain "bar".', 'baz', 'bar', ]; } }