PHPUnit assert that an exception was thrown?

有谁知道是否有assert或类似的东西可以测试是否在被测试的代码中抛出异常？

---

<?php
require_once 'PHPUnit/Framework.php';

class ExceptionTest extends PHPUnit_Framework_TestCase
{
    public function testException()
    {
        $this->expectException(InvalidArgumentException::class);
        // or for PHPUnit < 5.2
        // $this->setExpectedException(InvalidArgumentException::class);

        //...and then add your test code that generates the exception 
        exampleMethod($anInvalidArgument);
    }
}

expectException() PHPUnit documentation

PHPUnit author article provides detailed explanation on testing exceptions best practices.

---

You can also use a docblock annotation:

class ExceptionTest extends PHPUnit_Framework_TestCase
{
    /**
     * @expectedException InvalidArgumentException
     */
    public function testException()
    {
        ...
    }
}

For PHP 5.5+ (especially with namespaced code), I now prefer using ::class

---

If you're running on PHP 5.5+, you can use ::class resolution to obtain the name of the class with expectException / setExpectedException . This provides several benefits:

The name will be fully-qualified with its namespace (if any).

It resolves to a string so it will work with any version of PHPUnit.

You get code-completion in your IDE.

The PHP compiler will emit an error if you mistype the class name.

Example:

namespace MyCoolPackage;

class AuthTest extends PHPUnit_Framework_TestCase
{
    public function testLoginFailsForWrongPassword()
    {
        $this->expectException(WrongPasswordException::class);
        Auth::login('Bob', 'wrong');
    }
}

PHP compiles

WrongPasswordException::class

into

"MyCoolPackageWrongPasswordException"

without PHPUnit being the wiser.

Note : PHPUnit 5.2 introduced expectException as a replacement for setExpectedException .

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