assertThrows(IOException.class, () -> reader.read(new char[10], 0, 10));

    assertThrows(IOException.class, () -> reader.read(CharBuffer.allocate(10)));

    assertThrows(IOException.class, () -> reader.skip(10));

    assertThrows(IOException.class, () -> reader.ready());

    assertThrows(IOException.class, () -> reader.mark(10));

    assertFalse(in.closed());
    sink.writeFrom(in);
    assertFalse(in.closed());
  }

  public void testClosesOnErrors_copyingFromByteSourceThatThrows() {
    for (TestOption option : EnumSet.of(OPEN_THROWS, READ_THROWS, CLOSE_THROWS)) {
      TestByteSource failSource = new TestByteSource(new byte[10], option);
      TestByteSink okSink = new TestByteSink();

  public void testThreshold() throws Exception {
    testThreshold(0, 100, true, false);
    testThreshold(10, 100, true, false);
    testThreshold(100, 100, true, false);
    testThreshold(1000, 100, true, false);
    testThreshold(0, 100, false, false);
    testThreshold(10, 100, false, false);
    testThreshold(100, 100, false, false);
    testThreshold(1000, 100, false, false);
  }

    }
  }

  public void testTruncate() {
    assertEquals("foobar", Ascii.truncate("foobar", 10, "..."));
    assertEquals("fo...", Ascii.truncate("foobar", 5, "..."));
    assertEquals("foobar", Ascii.truncate("foobar", 6, "..."));
    assertEquals("...", Ascii.truncate("foobar", 3, "..."));
    assertEquals("foobar", Ascii.truncate("foobar", 10, "…"));
    assertEquals("foo…", Ascii.truncate("foobar", 4, "…"));

 * @author Kurt Alfred Kluever
 */

public class PackageSanityTests extends AbstractPackageSanityTests {

  private static final AbstractGraphBuilder<?> GRAPH_BUILDER_A =
      GraphBuilder.directed().expectedNodeCount(10);
  private static final AbstractGraphBuilder<?> GRAPH_BUILDER_B =
      ValueGraphBuilder.directed().allowsSelfLoops(true).expectedNodeCount(16);

  private static final ImmutableGraph<String> IMMUTABLE_GRAPH_A =

    assertEquals(10, counter.read(new byte[10]));
    assertEquals(10, counter.getCount());
  }

  public void testReadArrayRange() throws IOException {
    assertEquals(3, counter.read(new byte[10], 1, 3));
    assertEquals(3, counter.getCount());
  }

  public void testSkip() throws IOException {
    assertEquals(10, counter.skip(10));
    assertEquals(10, counter.getCount());
  }

    assertTrue(interruptedExceptionThrown.get());
  }

  @J2ktIncompatible
  @GwtIncompatible // blocking wait
  public void testRunIdempotency() throws Exception {
    final int numThreads = 10;
    final ExecutorService executor = Executors.newFixedThreadPool(numThreads);
    for (int i = 0; i < 1000; i++) {
      final AtomicInteger counter = new AtomicInteger();

    assertThrows(IOException.class, () -> reader.read(new char[10], 0, 10));

    assertThrows(IOException.class, () -> reader.read(CharBuffer.allocate(10)));

    assertThrows(IOException.class, () -> reader.skip(10));

    assertThrows(IOException.class, () -> reader.ready());

    assertThrows(IOException.class, () -> reader.mark(10));

    FakeTicker ticker = new FakeTicker();
    assertSame(ticker, ticker.setAutoIncrementStep(10, TimeUnit.NANOSECONDS));
  }

  public void testAutoIncrementStep_nanos() {
    FakeTicker ticker = new FakeTicker().setAutoIncrementStep(10, TimeUnit.NANOSECONDS);
    assertEquals(0, ticker.read());
    assertEquals(10, ticker.read());
    assertEquals(20, ticker.read());
  }

  public void testAutoIncrementStep_millis() {

    for (int i = 0; i < 10; i++) {
      top.offer(i);
    }
    assertThat(top.topK()).isEmpty();
  }

  public void testNoElementsOffered() {
    TopKSelector<Integer> top = TopKSelector.least(10);
    assertThat(top.topK()).isEmpty();
  }

  public void testOfferedFewerThanK() {
    TopKSelector<Integer> top = TopKSelector.least(10);
    top.offer(3);
    top.offer(5);
    top.offer(2);