I have the following abstract class:

abstract class Voter
{
    public function vote()
    {
        $this->something();
        $this->something();

        $this->voteFoo();
        $this->voteBar();
    }

    public function __call($method, $args)
    {
        //...
    }

    abstract public function something();
}

voteFoo and voteBar are handled by __call.

I want to assert that vote() calls both voteFoo() and voteBar(), how can I do that?

I tried using $this->at(..) but it gives me an error:

$voter = $this->getMockForAbstractClass('Voter', array(), '', true, true, true, array('__call'));

$voter->expects($this->any())
      ->method('something')
      ->will($this->returnValue(true));

$voter->expects($this->at(0))
      ->method('__call')
      ->with($this->equalTo('voteFoo'));

$voter->expects($this->at(1))
      ->method('__call')
      ->with($this->equalTo('voteBar'));

$voter->vote();

*********** ERROR *************
Expectation failed for method name is equal to <string:__call> when invoked at
sequence index 0.
Mocked method does not exist.

Edit:

If I change the values in $this->at() to 2 and 3 the test passes, which means that for some reason $this->something() also triggers the __call method.

This Voter class is not my real Voter class, it's a simple version for the question. In my real class I can't tell how many times __call will be called..

It's not entirely clear from the docs , but you should be able to use returnValueMap for this:

$voter->expects($this->any())
      ->method('something')
      ->will($this->returnValue(true));

$argumentMap = array(
    array('voteFoo'),
    array('voteBar')
);

$voter->expects($this->exactly(2))
      ->method('__call')
      ->will($this->returnValueMap($argumentMap));

more