assertEmpty()
最后更新于：2022-04-01 03:47:18
# assertEmpty()
>[info] ## assertEmpty(mixed $actual[, string $message = ''])
当 `$actual` 非空时报告错误，错误讯息由 `$message` 指定。
`assertNotEmpty()` 是与之相反的断言，接受相同的参数。
`assertAttributeEmpty()` 和 `assertAttributeNotEmpty()` 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.11. assertEmpty() 的用法**
~~~
<?php
class EmptyTest extends PHPUnit_Framework_TestCase
{
public function testFailure()
{
$this->assertEmpty(array('foo'));
}
}
?>
~~~
~~~
phpunit EmptyTest
PHPUnit 5.0.0 by Sebastian Bergmann and contributors.
F
Time: 0 seconds, Memory: 4.75Mb
There was 1 failure:
1) EmptyTest::testFailure
Failed asserting that an array is empty.
/home/sb/EmptyTest.php:6
FAILURES!
Tests: 1, Assertions: 1, Failures: 1.
~~~