assertThrows(SomeCheckedException.class, iter::hasNext);
    // But the second time, AbstractIterator itself throws an ISE
    assertThrows(IllegalStateException.class, iter::hasNext);
  }

  public void testException() {
    SomeUncheckedException exception = new SomeUncheckedException();
    Iterator<Integer> iter =
        new AbstractIterator<Integer>() {
          @Override
          public Integer computeNext() {

    assertThrows(SomeCheckedException.class, iter::hasNext);
    // But the second time, AbstractIterator itself throws an ISE
    assertThrows(IllegalStateException.class, iter::hasNext);
  }

  public void testException() {
    SomeUncheckedException exception = new SomeUncheckedException();
    Iterator<Integer> iter =
        new AbstractIterator<Integer>() {
          @Override
          public Integer computeNext() {

    assertThrows(SomeCheckedException.class, iter::hasNext);
    // But the second time, AbstractIterator itself throws an ISE
    assertThrows(IllegalStateException.class, iter::hasNext);
  }

  public void testException() {
    SomeUncheckedException exception = new SomeUncheckedException();
    Iterator<Integer> iter =
        new AbstractIterator<Integer>() {
          @Override
          public Integer computeNext() {

    assertThrows(SomeCheckedException.class, iter::hasNext);
    // But the second time, AbstractIterator itself throws an ISE
    assertThrows(IllegalStateException.class, iter::hasNext);
  }

  public void testException() {
    SomeUncheckedException exception = new SomeUncheckedException();
    Iterator<Integer> iter =
        new AbstractIterator<Integer>() {
          @Override
          public Integer computeNext() {

    assertThat(
            new AbstractFuture<Object>() {
              {
                set(value);
              }
            }.get())
        .isEqualTo(value);
  }

  public void testException() throws InterruptedException {
    Throwable failure = new Throwable();
    AbstractFuture<String> future =
        new AbstractFuture<String>() {
          {
            setException(failure);
          }

    assertThat(
            new AbstractFuture<Object>() {
              {
                set(value);
              }
            }.get())
        .isEqualTo(value);
  }

  public void testException() throws InterruptedException {
    Throwable failure = new Throwable();
    AbstractFuture<String> future =
        new AbstractFuture<String>() {
          {
            setException(failure);
          }

    assertFalse(input.isCancelled());
    assertFalse(input.isDone());
  }

  @J2ktIncompatible
  @GwtIncompatible // used only in GwtIncompatible tests
  private static class TestException extends Exception {

    TestException(@Nullable Throwable cause) {
      super(cause);
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // used only in GwtIncompatible tests

    assertFalse(input.isCancelled());
    assertFalse(input.isDone());
  }

  @J2ktIncompatible
  @GwtIncompatible // used only in GwtIncompatible tests
  private static class TestException extends Exception {

    TestException(@Nullable Throwable cause) {
      super(cause);
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // used only in GwtIncompatible tests