def test_copy_file(self, mock_gfvs_wrapper):
"""
Test 'copy_file' copies a file from source to destination.
"""
src_file = "/tmp/song.mp3"
dst_file = "Card/Musicsong.mp3"
sync = Sync(FAKE_MTP_DETAILS, "/tmp", "Card/Music")
sync.set_source_abs()
sync.set_destination_abs()
sync.copy_file(src_file, dst_file)
mock_gfvs_wrapper.assert_called_once_with(cp, src_file, dst_file)
