phpunitHow to expect an exception in PHPUnit?

Expecting an exception in PHPUnit is done using the expectException() method. This method takes a single parameter, which is the expected exception class name.

<?php

use PHPUnit\Framework\TestCase;

class ExceptionTest extends TestCase
{
    public function testException()
    {
        $this->expectException('Exception');
        throw new Exception();
    }
}

The output of the above code will be:

OK (1 test, 1 assertion)

Code explanation

1. use PHPUnit\Framework\TestCase; - This imports the TestCase class from the PHPUnit framework.
2. $this->expectException('Exception'); - This is the method used to expect an exception. It takes the expected exception class name as a parameter.
3. throw new Exception(); - This is the line that throws the exception.

Helpful links

• PHPUnit Documentation - Expecting Exceptions

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