public static CharMatcher isNot(char match) {
    return new IsNot(match);
  }

  /**
   * Returns a {@code char} matcher that matches any BMP character present in the given character
   * sequence. Returns a bogus matcher if the sequence contains supplementary characters.
   */
  public static CharMatcher anyOf(CharSequence sequence) {
    switch (sequence.length()) {
      case 0:
        return none();
      case 1:

  fun openWithInvalidJournalLineClearsDirectory(parameters: Pair<FileSystem, Boolean>) {
    setUp(parameters.first, parameters.second)
    cache.close()
    generateSomeGarbageFiles()
    createJournal("CLEAN k1 1 1", "BOGUS")
    createNewCache()
    assertGarbageFilesAllDeleted()
    assertThat(cache["k1"]).isNull()
  }

  @ParameterizedTest
  @ArgumentsSource(FileSystemParamProvider::class)

  @Test fun bogusDataFrameDoesNotDisruptConnection() {
    // Write the mocking script.
    peer.sendFrame().settings(Settings())
    peer.acceptFrame() // ACK
    peer.sendFrame().data(true, 41, Buffer().writeUtf8("bogus"), 5)
    peer.acceptFrame() // RST_STREAM
    peer.sendFrame().ping(false, 2, 0)
    peer.acceptFrame() // PING
    peer.play()

    // Play it back.
    connect(peer)