assertThat(cache.edit("a")).isNull()
    assertThat(cache.edit("c")).isNull()
    cache["a"]!!.use {
      assertThat(it.edit()).isNull()
    }
  }

  @Test
  fun rebuildJournalFailureIsRetried() {
    while (taskFaker.isIdle()) {
      set("a", "a", "a")
      set("b", "b", "b")
    }

    // Cause the rebuild action to fail.