php PHPUnit：assertInstanceOf() 不起作用
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PHPUnit: assertInstanceOf() not working
提问by Mantas
I need to check if a variable is an object of the User type.
User is my class $usermy object
我需要检查一个变量是否是 User 类型的对象。用户是我的班级$user我的对象
$this->assertInstanceOf($user,User);
This is not working, I have a use of undefined constant User - assumed 'User'
这不起作用，我使用了未定义的常量用户 - 假设为“用户”
Thanks in advance for your help
在此先感谢您的帮助
回答by Mantas
http://apigen.juzna.cz/doc/sebastianbergmann/phpunit/function-assertInstanceOf.html
http://apigen.juzna.cz/doc/sebastianbergmann/phpunit/function-assertInstanceOf.html
I think you are using this function wrong. Try:
我认为您使用此功能是错误的。尝试：
$this->assertInstanceOf('User', $user);
回答by Rápli András
It's always a good idea to use ::classwherever you can. If you get used to this standard, you don't have to use FQCNs (fully qualified classnames), or escape backslashes. Also, IDEs provide better functionality if they know that Userhere is not just a string, but rather a class.
::class随时随地使用总是一个好主意。如果您习惯了此标准，则不必使用 FQCN（完全限定的类名）或转义反斜杠。此外，如果 IDE 知道User这里不仅仅是一个字符串，而是一个类，它们会提供更好的功能。
$this->assertInstanceOf(User::class, $user);
回答by Rafal Kozlowski
Or You can use something like:
或者你可以使用类似的东西：
$this->assertInstanceOf(get_class($expectedObject), $user);
I usually use this when I'm checking i.e. if setter method is returning reference to self.
我通常在检查时使用它，即 setter 方法是否返回对 self 的引用。
$testedObj = new ObjectToTest();
$this->assertInstanceOf(
get_class($testedObj),
$testedObj->setSomething('someValue'),
'Setter is not returning $this reference'
);
