PHPUnit mock objects and method type hinting

Oh, actually, the problem is pretty simple, but somehow hard to spot. Instead of:

$observer = $this->getMock('SplObserver', array('update'))                 ->expects($this->once())                 ->method('update');

You have to write:

$observer = $this->getMock('SplObserver', array('update'));$observer->expects($this->once())         ->method('update');

That's because getMock() returns a different thing than method(), that's why you got the error. You passed the wrong object to attach.

I think you have to fully qualify the type of the mock:

$observer = $this->getMock('\SplObserver', array('update'));

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