public function testRemoveTimeTracker() { $timeTracker = new TimeTracker(); $project = new Project(); $this->assertEquals(0, $project->getTimetrackers()->count()); $project->addTimeTracker($timeTracker); $this->assertEquals(1, $project->getTimetrackers()->count()); $project->removeTimeTracker($timeTracker); $this->assertEquals(0, $project->getTimetrackers()->count()); }