assertEmpty()

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.