// Then
        assertEquals(expectedException, actualException);
        verify(response).getException();
    }

    @Test
    @DisplayName("Test Response interface methods - exception")
    void testException() {
        // Given
        Exception ex = new RuntimeException("Runtime error");
        doNothing().when(response).exception(ex);

        // When
        response.exception(ex);

        // Then

    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