     func testADMozaikLayoutRepresentationWithComplexLayout() {
         self.viewController = ADMozaikLayoutTestsViewController()
         self.viewController.useCase = .F
-        self.viewController.view.frame = UIScreen.mainScreen().bounds
+        self.viewController.view.frame = self.testingFrame()
         self.viewController.collectionView.reloadData()
         
         self.FBSnapshotVerifyView(self.viewController.view)

    func testADMozaikLayoutRepresentationWithInterLineInsetsAndInterItemInsetsAndThreeColumns() {
        self.viewController = ADMozaikLayoutTestsViewController()
        self.viewController.useCase = .D
        self.viewController.view.frame = UIScreen.mainScreen().bounds
        self.viewController.collectionView.reloadData()
        
        self.FBSnapshotVerifyView(self.viewController.view)

    func testADMozaikLayoutRepresentationWithZeroNumberOfSections() {
        self.viewController = ADMozaikLayoutTestsViewController()
        self.viewController.useCase = .G
        self.viewController.view.frame = self.testingFrame()
        self.viewController.collectionView.reloadData()
        
        self.FBSnapshotVerifyView(self.viewController.view)
    }
    
    //MARK - Private
    
    private func testingFrame() -> CGRect {
        return CGRect(x: 0, y: 0, width: 320, height: 568)
    }
    
}
