@Test
  fun hostIpv6WithIpv4SuffixWithHexadecimalPrefix() {
    // Chrome interprets a leading '0x' as hexadecimal; Firefox rejects them. (We reject them.)
    assertInvalid(
      "http://[0:0:0:0:0:1:0.0x10.0.0x10]/",
      "Invalid URL host: \"[0:0:0:0:0:1:0.0x10.0.0x10]\"",
    )
  }

  @Test
  fun hostIpv6WithMalformedIpv4Suffix() {
    assertInvalid(
      "http://[0:0:0:0:0:1:0.0:0.0]/",

0000090 57 39 00 05 00 fa ff 00 05 00 fa ff 00 14 00 eb
00000a0 ff c2 54 8e 57 39 00 05 00 fa ff 00 05 00 fa ff
00000b0 00 14 00 eb ff 42 88 21 c4 00 00 14 00 eb ff 42
00000c0 88 21 c4 00 00 14 00 eb ff 42 88 21 c4 00 00 14
00000d0 00 eb ff 42 88 21 c4 00 00 14 00 eb ff 42 88 21
00000e0 c4 00 00 00 00 ff ff 00 00 00 ff ff 00 34 00 cb
00000f0 ff 42 88 21 c4 00 00 00 00 ff ff 00 00 00 ff ff
0000100 00 34 00 cb ff 42 e8 21 5e 0f 00 00 00 ff ff 0a

                    int noutputs, TF_Output* grad_outputs) {
    if (grad_inputs_provided) {
      TF_Output grad_inputs[1];
      const float grad_inputs_val[] = {1.0, 1.0, 1.0, 1.0};
      TF_Operation* grad_inputs_op =
          FloatConst2x2(graph_, s_, grad_inputs_val, "GradInputs");
      grad_inputs[0] = TF_Output{grad_inputs_op, 0};

                    if (e.getMessage() != null && (e.getMessage().contains("Connection refused")
                            || e.getMessage().contains("Failed to connect") || e.getMessage().contains("localhost/0:0:0:0:0:0:0:1"))) {
                        // Network connectivity issue in CI - skip test
                        assumeTrue(false, "Cannot connect to SMB server in CI environment - skipping test: " + e.getMessage());

    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()