Mock in PHPUnit - multiple configuration of the same method with different arguments

Question

Is it possible to configure PHPUnit mock in this way?

$context = $this->getMockBuilder(\'Context\')
   ->getMock();

$context->expects($this->any         


        

Answer 1

You can achieve this with a callback:

class MockTest extends PHPUnit_Framework_TestCase
{
    /**
     * @dataProvider provideExpectedInstance
     */
    public function testMockReturnsInstance($expectedInstance)
    {
        $context = $this->getMock('Context');

        $context->expects($this->any())
           ->method('offsetGet')
           // Accept any of "Matcher" or "Logger" for first argument
           ->with($this->logicalOr(
                $this->equalTo('Matcher'),
                $this->equalTo('Logger')
           ))
           // Return what was passed to offsetGet as a new instance
           ->will($this->returnCallback(
               function($arg1) {
                   return new $arg1;
               }
           ));

       $this->assertInstanceOf(
           $expectedInstance,
           $context->offsetGet($expectedInstance)
       );
    }
    public function provideExpectedInstance()
    {
        return array_chunk(array('Matcher', 'Logger'), 1);
    }
}

Should pass for any "Logger" or "Matcher" arguments passed to the Context Mock's offsetGet method:

F:\Work\code\gordon\sandbox>phpunit NewFileTest.php
PHPUnit 3.5.13 by Sebastian Bergmann.

..

Time: 0 seconds, Memory: 3.25Mb

OK (2 tests, 4 assertions)

As you can see, PHPUnit ran two tests. One for each dataProvider value. And in each of those tests it made the assertion for with() and the one for instanceOf, hence four assertions.