SettableFuture<String> future = SettableFuture.create();
    future.cancel(false);
    assertThat(future.tryInternalFastPathGetFailure()).isNull();
  }

  public void testGetFailure_completed() {
    AbstractFuture<String> future = new AbstractFuture<String>() {};
    future.set("261");
    assertThat(future.tryInternalFastPathGetFailure()).isNull();
  }