}

  @Test
  fun multipleSources() {
    val upstream = Buffer()
    upstream.writeUtf8("abcdefghijklm")
    val relay = edit(file, upstream, metadata, 1024)
    val source1 = relay.newSource()!!.buffer()
    val source2 = relay.newSource()!!.buffer()
    assertThat(source1.readUtf8()).isEqualTo("abcdefghijklm")
    assertThat(source2.readUtf8()).isEqualTo("abcdefghijklm")
    source1.close()
    source2.close()

    setUp(parameters.first, parameters.second)
    val creator = cache.edit("k1")!!
    creator.setString(0, "ABC")
    creator.setString(1, "DE")
    assertThat(creator.newSource(0)).isNull()
    assertThat(creator.newSource(1)).isNull()
    creator.commit()
    val snapshot = cache["k1"]!!
    snapshot.assertValue(0, "ABC")
    snapshot.assertValue(1, "DE")
  }

  @ParameterizedTest