@Test
    public void testIsStorageExisting() {
        Storage readerStorage = new Storage(STOROGE_PATH);

        assertFalse(storageFile.exists());
        assertFalse(storage.isExisting());
        assertFalse(readerStorage.isExisting());

        storage.store(STOROGE_OBJECT);
        assertTrue(storage.isExisting());
        assertTrue(readerStorage.isExisting());
    }