PHPUnit Mock Function

PHPUnit extension to Mock PHP internal functions using Runkit.

Requirements

• Runkit
• Test Helpers*

*This is an optional requirement. Runkit doesn't currently support the override of internal functions (exit, die etc).

Installation

Using composer, add the following to the composer.json file:

{
   "require": {
       "qubit05/phpunit-mockfunction": "1.*"
   }
}

Example

ExampleClass.php

<?php
class ExampleClass
{
    public function doExample()
    {
        return date();
    }
}

ExampleClassTest.php

<?php
class ExampleClassTest extends \PHPUnit_Framework_TestCase
{
    public function testExample()
    {
        $param = 'Y-m-d H:i:s';
        $value = 'non date value';
    
        $mockFunction = new PHPUnit_Extensions_MockFunction('date', $this);
        $mockFunction->expects($this->once())
            ->with($this->equalTo($param))
            ->will($this->returnValue($value));
        
        $exampleClass = new ExampleClass();
        $this->assertEquals($value, $exampleClass->doExample($param));
    }
}

Acknowledgement

When this class was created, some inspiration was taken from tcz/phpunit-mockfunction. The two classes are similar but not the same.