assertThat(converter.reverse().convert(0.0f)).isEqualTo("0.0");
    assertThat(converter.reverse().convert(-1.0f)).isEqualTo("-1.0");
    assertThat(converter.reverse().convert(1e6f)).isEqualTo("1000000.0");
    assertThat(converter.reverse().convert(1e-6f)).isEqualTo("1.0E-6");
  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testStringConverter_nullPointerTester() throws Exception {

    assertThat(frame.exhausted()).isTrue()
  }

  @Test fun tooLargeDataFrame() {
    assertFailsWith<IllegalArgumentException> {
      sendDataFrame(Buffer().write(ByteArray(0x1000000)))
    }.also { expected ->
      assertThat(expected.message).isEqualTo("FRAME_SIZE_ERROR length > 16384: 16777216")
    }
  }

  @Test fun windowUpdateRoundTrip() {

    assertThat(cache["k1"]).isNull()
  }

  @Test
  fun openWithInvalidFileSizeClearsDirectory() {
    cache.close()
    generateSomeGarbageFiles()
    createJournal("CLEAN k1 0000x001 1")
    createNewCache()
    assertGarbageFilesAllDeleted()
    assertThat(cache["k1"]).isNull()
  }

  @Test
  fun openWithTruncatedLineDiscardsThatLine() {
    cache.close()

    int coercedHash = murmur3_32_fixed().hashLong(addressAsLong).asInt();

    // Squash into 224/4 Multicast and 240/4 Reserved space (i.e. 224/3).
    coercedHash |= 0xe0000000;

    // Fixup to avoid some "illegal" values. Currently the only potential
    // illegal value is 255.255.255.255.
    if (coercedHash == 0xffffffff) {
      coercedHash = 0xfffffffe;
    }

33D7          ; mapped                 ; 0070 0068     # 1.1  SQUARE PH
33D8          ; disallowed                             # 1.1  SQUARE PM
33D9          ; mapped                 ; 0070 0070 006D #1.1  SQUARE PPM
33DA          ; mapped                 ; 0070 0072     # 1.1  SQUARE PR
33DB          ; mapped                 ; 0073 0072     # 1.1  SQUARE SR