snapshot.assertValue(1, "DE")
    assertThat(filesystem.exists(journalBkpFile)).isFalse()
    assertThat(filesystem.exists(journalFile)).isTrue()
  }

  @Test
  fun journalFileIsPreferredOverBackupFile() {
    var creator = cache.edit("k1")!!
    creator.setString(0, "ABC")
    creator.setString(1, "DE")
    creator.commit()
    cache.flush()
    filesystem.copy(journalFile, journalBkpFile)