assertInstanceOf()
最后更新于：2022-04-01 03:47:39
# assertInstanceOf()
>[info] ## assertInstanceOf($expected, $actual[, $message = ''])
当 `$actual` 不是 `$expected` 的实例时报告错误，错误讯息由 `$message` 指定。
`assertNotInstanceOf()` 是与之相反的断言，接受相同的参数。
`assertAttributeInstanceOf()` 和 `assertAttributeNotInstanceOf()` 是便捷包装(convenience wrapper)，可以应用于某个类或对象的某个 `public`、`protected` 或 `private` 属性。
**Example A.24. assertInstanceOf() 的用法**
~~~
<?php
class InstanceOfTest extends PHPUnit_Framework_TestCase
{
public function testFailure()
{
$this->assertInstanceOf('RuntimeException', new Exception);
}
}
?>
~~~
~~~
phpunit InstanceOfTest
PHPUnit 5.0.0 by Sebastian Bergmann and contributors.
F
Time: 0 seconds, Memory: 5.00Mb
There was 1 failure:
1) InstanceOfTest::testFailure
Failed asserting that Exception Object (...) is an instance of class "RuntimeException".
/home/sb/InstanceOfTest.php:6
FAILURES!
Tests: 1, Assertions: 1, Failures: 1.
~~~