String string = noWorkToDo ? charSequenceToUpperCase(testString) : testString;

    int dummy = 0;
    for (int i = 0; i < reps; i++) {
      dummy += charSequenceToUpperCase(string).length();
    }
    return dummy;
  }

  @Benchmark
  int stringToUpperCase(int reps) {
    String string = noWorkToDo ? testString.toUpperCase(Locale.US) : testString;

    int dummy = 0;
    for (int i = 0; i < reps; i++) {

    matcher = useNew ? CharMatcher.whitespace() : OLD_WHITESPACE;
    teststring = newTestString(new Random(1), bitSet, percentMatching);
  }

  @Benchmark
  public int countIn(int reps) {
    int result = 0;
    CharMatcher matcher = this.matcher;
    String teststring = this.teststring;
    for (int i = 0; i < reps; i++) {
      result += matcher.countIn(teststring);
    }
    return result;
  }

  @Benchmark

    matcher = useNew ? CharMatcher.whitespace() : OLD_WHITESPACE;
    teststring = newTestString(new Random(1), bitSet, percentMatching);
  }

  @Benchmark
  public int countIn(int reps) {
    int result = 0;
    CharMatcher matcher = this.matcher;
    String teststring = this.teststring;
    for (int i = 0; i < reps; i++) {
      result += matcher.countIn(teststring);
    }
    return result;
  }

  @Benchmark

    String string = noWorkToDo ? charSequenceToUpperCase(testString) : testString;

    int dummy = 0;
    for (int i = 0; i < reps; i++) {
      dummy += charSequenceToUpperCase(string).length();
    }
    return dummy;
  }

  @Benchmark
  int stringToUpperCase(int reps) {
    String string = noWorkToDo ? testString.toUpperCase(Locale.US) : testString;

    int dummy = 0;
    for (int i = 0; i < reps; i++) {

    assertFalse(joinedReader.ready());
  }

  public void testSimple() throws Exception {
    String testString = "abcdefgh";
    CharSource source = newCharSource(testString);
    Reader joinedReader = CharSource.concat(source, source).openStream();

    String expectedString = testString + testString;
    assertEquals(expectedString, CharStreams.toString(joinedReader));
  }

    assertFalse(joinedReader.ready());
  }

  public void testSimple() throws Exception {
    String testString = "abcdefgh";
    CharSource source = newCharSource(testString);
    Reader joinedReader = CharSource.concat(source, source).openStream();

    String expectedString = testString + testString;
    assertEquals(expectedString, CharStreams.toString(joinedReader));
  }

		buf.Truncate(20)
		check(t, "TestBasicOperations (8)", &buf, testString[0:20])

		empty(t, "TestBasicOperations (9)", &buf, testString[0:20], make([]byte, 5))
		empty(t, "TestBasicOperations (10)", &buf, "", make([]byte, 100))

		buf.WriteByte(testString[1])
		c, err := buf.ReadByte()
		if want := testString[1]; err != nil || c != want {
			t.Errorf("ReadByte: got (%q, %v), want (%q, %v)", c, err, want, nil)
		}

  }

  public void testSkipFully() throws IOException {
    String testString = "abcdef";
    Reader reader = new StringReader(testString);

    assertEquals(testString.charAt(0), reader.read());
    CharStreams.skipFully(reader, 1);
    assertEquals(testString.charAt(2), reader.read());
    CharStreams.skipFully(reader, 2);
    assertEquals(testString.charAt(5), reader.read());

    assertEquals(-1, reader.read());
  }

  }

  public void testSkipFully() throws IOException {
    String testString = "abcdef";
    Reader reader = new StringReader(testString);

    assertEquals(testString.charAt(0), reader.read());
    CharStreams.skipFully(reader, 1);
    assertEquals(testString.charAt(2), reader.read());
    CharStreams.skipFully(reader, 2);
    assertEquals(testString.charAt(5), reader.read());

    assertEquals(-1, reader.read());
  }

    Sink sink = new Sink(4);
    sink.putChar((char) 0x0201);
    HashCode unused = sink.hash();
    sink.assertInvariants(2);
    sink.assertBytes(new byte[] {1, 2, 0, 0}); // padded with zeros
  }

  public void testString() {
    Random random = new Random();
    for (int i = 0; i < 100; i++) {
      byte[] bytes = new byte[64];
      random.nextBytes(bytes);
      String s = new String(bytes, UTF_16LE); // so all random strings are valid