Atoum, test if a mocked method is called only once

calledoncemock.php

$this->assert
        ->if($mock = new \mock\MyClassToMock())
        ->if($test = myTestedClass($mock))
        ->and($myCounter = 0)
        ->and($mock->getMockController()->mockedMethod = function () use(&$myCounter) {doWhatever();$myCounter++;})
        ->and($test->myMethodThatUsesMockedMethod())
        ->number($myCounter)
        ->isEqualTo(1);

<?php
//...
    ->then
        ->mock($mock)
            ->call('mockedMethod')->once()
            ->call('mockedMethod')->exactly(2)
            ->call('mockedMethod')->withArguments('foo', 'bar')->once()
            //...