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Does anyone know whether there is an assert or something like that which can test whether an exception was thrown in the code being tested?
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Use expectExceptionMessage if the message is important, or if it is the only way to see where something went wrong. Use try catch if you need to validate specific properties of the exception. For this post, PHPUnit 9.5 and PHP 8.0 were used. If you want to run the tests for yourself, you can find them on github.
When using JUnit 4, we can simply use the expected attribute of the @Test annotation to declare that we expect an exception to be thrown anywhere in the annotated test method. In this example, we've declared that we're expecting our test code to result in a NullPointerException.
<?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.
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