.build()
        .byteCount(),
    ).isEqualTo(10L)
    assertThat(
      Headers.Builder()
        .add("abc", "def")
        .add("ghi", "jkl")
        .build()
        .byteCount(),
    ).isEqualTo(20L)
  }

  @Test fun addDate() {
    val expected = Date(0L)
    val headers =
      Headers.Builder()
        .add("testDate", expected)
        .build()

    assertThat(source1.exhausted()).isTrue()
    assertThat(source2.exhausted()).isTrue()
    source1.close()
    source2.close()
    assertThat(relay.isClosed).isTrue()
    assertFile(Relay.PREFIX_CLEAN, 20L, metadata.size, "abcdefghijklmnopqrst", metadata)
  }

  @Test
  fun readAfterEdit() {
    val upstream = Buffer()
    upstream.writeUtf8("abcdefghij")
    val relay1 = edit(file, upstream, metadata, 5)

    // will result in random eviction behavior.
    int segmentShift = 0;
    int segmentCount = 1;
    while (segmentCount < concurrencyLevel
        && (!evictsBySize() || segmentCount * 20L <= maxWeight)) {
      ++segmentShift;
      segmentCount <<= 1;
    }
    this.segmentShift = 32 - segmentShift;
    segmentMask = segmentCount - 1;

    this.segments = newSegmentArray(segmentCount);