@Test public void injectorFunction_composite() {

  InjectorFunction existing = mock(InjectorFunction.class);
  CompositeInjectorFunction injectorFunction =
      (CompositeInjectorFunction) injectorFunction(existing, two, three);
  assertThat(injectorFunction.injectorFunctions)
      .containsExactly(two, three);
  injectorFunction.inject(setter, context, notRequest);
  assertThat(twoCount.getAndSet(0)).isOne();
  assertThat(threeCount.getAndSet(0)).isOne();
}