# assertClassHasStaticAttribute() >[info] ## assertClassHasStaticAttribute(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。 `assertClassNotHasStaticAttribute()` 是与之相反的断言，接受相同的参数。 **Example A.4. assertClassHasStaticAttribute() 的用法** ~~~ <?php class ClassHasStaticAttributeTest extends PHPUnit_Framework_TestCase { public function testFailure() { $this->assertClassHasStaticAttribute('foo', 'stdClass'); } } ?> ~~~ ~~~ phpunit ClassHasStaticAttributeTest PHPUnit 5.0.0 by Sebastian Bergmann and contributors. F Time: 0 seconds, Memory: 4.75Mb There was 1 failure: 1) ClassHasStaticAttributeTest::testFailure Failed asserting that class "stdClass" has static attribute "foo". /home/sb/ClassHasStaticAttributeTest.php:6 FAILURES! Tests: 1, Assertions: 1, Failures: 1. ~~~