assertInstanceOf()


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。


例 A.29: assertInstanceOf() 的用法

  1. <?php
  2. use PHPUnit\Framework\TestCase;
  3.  
  4. class InstanceOfTest extends TestCase
  5. {
  6.     public function testFailure()
  7.     {
  8.         $this->assertInstanceOf(RuntimeException::class, new Exception);
  9.     }
  10. }
  11. ?>
  1. phpunit InstanceOfTest
  2. PHPUnit 6.5.0 by Sebastian Bergmann and contributors.
  3.  
  4. F
  5.  
  6. Time: 0 seconds, Memory: 5.00Mb
  7.  
  8. There was 1 failure:
  9.  
  10. 1) InstanceOfTest::testFailure
  11. Failed asserting that Exception Object (...) is an instance of class "RuntimeException".
  12.  
  13. /home/sb/InstanceOfTest.php:6
  14.  
  15. FAILURES!
  16. Tests: 1, Assertions: 1, Failures: 1.