问题描述
我正在尝试从我编写的以下类中测试方法(基本上没有显示的函数更多,基本上,每个is _ *()方法都有一个函数):
I am trying to test methods from the following class I have written (there are more functions than what is shown, basically, one function for each is_*() method):
class Validate {
private static $initialized = false;
/**
* Construct won't be called inside this class and is uncallable from the outside. This prevents
* instantiating this class. This is by purpose, because we want a static class.
*/
private function __construct() {}
/**
* If needed, allows the class to initialize itself
*/
private static function initialize()
{
if(self::$initialized) {
return;
} else {
self::$initialized = true;
//Set any other class static variables here
}
}
...
public static function isString($string) {
self::initialize();
if(!is_string($string)) throw new InvalidArgumentException('Expected a string but found ' . gettype($string));
}
...
}
当我测试方法是否在无效输入上引发异常时,效果很好!但是,当我测试该方法是否按预期工作时,PHPUnit会抱怨,因为我在测试中没有断言.具体错误是:
When I test if the methods throw an exception on invalid input, it works great! However, when I test if the method works as expected, PHPUnit complains because I have no assert in the test. The specific error is:
# RISKY This test did not perform any assertions
但是,我没有任何价值可言,因此我不确定如何克服这一点.
However, I don't have any value to assert against so I'm not sure how to overcome this.
我已经阅读了一些有关测试静态方法的内容,但是大部分内容似乎涵盖了静态方法之间的依赖关系.此外,即使非静态方法也可能没有返回值,那么,如何解决此问题?
I've read some about testing static methods, but that mostly seems to cover dependencies between static methods. Further, even non-static methods could have no return value, so, how to fix this?
供参考,我的测试代码:
For reference, my test code:
class ValidateTest extends PHPUnit_Framework_TestCase {
/**
* @covers ../data/objects/Validate::isString
* @expectedException InvalidArgumentException
*/
public function testIsStringThrowsExceptionArgumentInvalid() {
Validate::isString(NULL);
}
/**
* @covers ../data/objects/Validate::isString
*/
public function testIsStringNoExceptionArgumentValid() {
Validate::isString("I am a string.");
}
}
推荐答案
要避免出现有关断言的警告,可以按照文档中的说明使用@doesNotPerformAssertions
批注: https://phpunit.de/manual/current/en/appendixes.annotations.html#idp1585440
To prevent the warning about the assertions you can use the @doesNotPerformAssertions
annotation as explained in the documentation: https://phpunit.de/manual/current/en/appendixes.annotations.html#idp1585440
或者,如果您更喜欢代码而不是注释:$this->doesNotPerformAssertions();
Or if you prefer code over annotation:$this->doesNotPerformAssertions();
这篇关于如何用PHPUnit测试没有返回值的方法?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!