}

  public void testForStringsCharset_null() {
    for (Charset charset : Charset.availableCharsets().values()) {
      assertNullsThrowException(Funnels.stringFunnel(charset));
    }
  }

  public void testForInts() {
    Integer value = 1234;
    PrimitiveSink primitiveSink = mock(PrimitiveSink.class);
    Funnels.integerFunnel().funnel(value, primitiveSink);
    verify(primitiveSink).putInt(1234);
  }