key = "abcdefghijklmnopqrstuvwxyz_0123456789"
    cache.edit(key)!!.abort()
    // Contains dash.
    key = "-20384573948576"
    cache.edit(key)!!.abort()
  }

  @Test
  fun writeAndReadEntry() {
    val creator = cache.edit("k1")!!
    creator.setString(0, "ABC")
    creator.setString(1, "DE")
    assertThat(creator.newSource(0)).isNull()
    assertThat(creator.newSource(1)).isNull()