Mock Mock Mock

Mocking-Libraries

Claudio Zizza

Developer for > 15 years
(Currently PHP)

Co-Organizer PHP Usergroup Karlsruhe

Part of Podcast: phpdevradio.de
PHP Snippets: php.budgegeria.de

Twitter: @SenseException

Test your code!

(Duh!)

Tests & Dependencies

Dependencies

I only want to test/run
this small part

Test Doubles

Dummies
Stubs
Mocks
Spy

(We do only Mocks for now)

Tests are Confusing at some point

Your design influences your tests

Your tests influences your design

PHPUnit


    <?php

    $mockFw = new PHPUnit_Framework_MockObject_Generator();

    $math = $mockFw->createMock(MathInterface::class);

    $math->expects(new PHPUnit_Framework_MockObject_Matcher_InvokedAtLeastOnce())
        ->method('sum')
        ->with(1, 1)
        ->willReturn(2);

    $math->__phpunit_verify();

Prophecy


    <?php

    $mockFw = new Prophet();

    $prophecy = $mockFw->prophesize(MathInterface::class);
    $prophecy->sum(1, 1)
        ->willReturn(2)
        ->shouldBeCalledTimes(1);

    $math = $prophecy->reveal();

Mockery


    <?php

    $math = Mockery::mock(MathInterface::class);
    $math->shouldReceive('sum')
        ->once()
        ->with(1, 1)
        ->andReturn(2);

    Mockery::close();

vfsStream


    <?php

    baseDir = vfsStream::setup('dir');

    mkdir(vfsStream::url('dir')  . '/' . 'myDir');

bovigo/callmap


    <?php

    $math = NewInstance::of(MathInterface::class)
        ->returns(['sum' => 2]);
    // ...
    verify($math, 'sum')->wasCalledOnce();

Phake


    <?php

    $math = Phake::mock(MathInterface::class);
    Phake::when($math)->sum(1, 1)->thenReturn(2);
    // ...
    Phake::verify($math, Phake::times(1))->sum(1, 1);

PHP-Mock


    <?php

    $builder = new MockBuilder();
    $builder->setNamespace(__NAMESPACE__)
        ->setName('time')
        ->setFunction(function () {
            return 0;
        }
    );
    $stub = $builder->build();

    $stub->enable();
    time();

AspectMock


    <?php

    $mathMock = Test::double(Math::class, ['sum' => 0]);

    $math = new Math();
    $testify->assertSame(0, $math->sum(1, 2));

    $mathMock->verifyInvokedOnce('sum', [1, 2]);

Let's mock mock mock:

https://github.com/SenseException/mock-mock-mock

Thank you

Claudio Zizza
php.budgegeria.de
@SenseException