# assertClassHasAttribute() >[info] ## assertClassHasAttribute(string $attributeName, string $className[, string $message = '']) 当 `$className::attributeName` 不存在时报告错误，错误讯息由 `$message` 指定。 `assertClassNotHasAttribute()` 是与之相反的断言，接受相同的参数。 **Example A.2. assertClassHasAttribute() 的用法** ~~~ <?php class ClassHasAttributeTest extends PHPUnit_Framework_TestCase { public function testFailure() { $this->assertClassHasAttribute('foo', 'stdClass'); } } ?> ~~~ ~~~ phpunit ClassHasAttributeTest PHPUnit 5.0.0 by Sebastian Bergmann and contributors. F Time: 0 seconds, Memory: 4.75Mb There was 1 failure: 1) ClassHasAttributeTest::testFailure Failed asserting that class "stdClass" has attribute "foo". /home/sb/ClassHasAttributeTest.php:6 FAILURES! Tests: 1, Assertions: 1, Failures: 1. ~~~