AbstractFuture<Object> testFuture =
        new AbstractFuture<Object>() {
          @Override
          public String pendingToString() {
            // Complete ourselves during the toString calculation
            this.set(true);
            return "cause=[Because this test isn't done]";
          }
        };
    assertThat(testFuture.toString())

    AbstractFuture<Object> testFuture =
        new AbstractFuture<Object>() {
          @Override
          public String pendingToString() {
            // Complete ourselves during the toString calculation
            this.set(true);
            return "cause=[Because this test isn't done]";
          }
        };
    assertThat(testFuture.toString())