def test_copy_second_time(self):
        source_dir_test = "./PictureVideoFileOrganizer/unit_test/source_dir/"
        destination_dir_test = "./PictureVideoFileOrganizer/unit_test/destination_dir/"
        test_file = PictureFile("IMG_6845.JPG", source_dir_test, destination_dir_test)
        test_file.copy_to_destination_directory()

        assert test_file.filename == "IMG_6845.JPG"
        assert test_file.source_directory == "./PictureVideoFileOrganizer/unit_test/source_dir/"
        assert test_file.destination_directory == "./PictureVideoFileOrganizer/unit_test/destination_dir/2015-08-06/"
        assert test_file.file_size == 0
        assert test_file.copy_successful == False
        assert test_file.date_created == "2015-08-06"
    def test_copy_without_metadata(self):
        source_dir_test = "./PictureVideoFileOrganizer/unit_test/source_dir/"
        destination_dir_test = "./PictureVideoFileOrganizer/unit_test/destination_dir/"
        test_file = PictureFile("IMG_0035.JPG", source_dir_test, destination_dir_test)
        test_file.copy_to_destination_directory()

        assert test_file.filename == "IMG_0035.JPG"
        assert test_file.source_directory == "./PictureVideoFileOrganizer/unit_test/source_dir/"
        assert (
            test_file.destination_directory
            == "./PictureVideoFileOrganizer/unit_test/destination_dir/no_date_available/"
        )
        assert test_file.file_size == 0
        assert test_file.copy_successful == True
        assert test_file.date_created == ""