Which one is the clearest?

gistfile1.php

<?php

//PHPUnit
public function testApply() {
    $mock = $this->getMock('My\Foo\Class', array('apply'));
    $mock->expects($this->any())
         ->method('apply')
         ->with('foo')
         ->will($this->returnValue('bar'));
    
    $target = new My\Bar\Class($mock);
    $this->assertEquals('bar', $target->apply('foo'));
}

//PhpSpec2/Prophecy
/**
 * @param My\Foo\Class $foo
 */
function it_should_apply_foo_modificator($foo) {
    $this->beConstructedWith($foo);
    $foo->apply(Argument::exact('foo'))->willReturn('bar');
    
    $this->apply('foo')->shouldReturn('bar');
}

you can even shorten your example by merging the let method with the example one.

I think phpunit is more clear.

you forget the <?php. It's dirty.

@docteurklein :D

Fixed https://gist.github.com/everzet/5722238

the clearEST

:D i love trolling.

oh you!