### Question:
ProcessorContext { public RoundEnvironment getRoundEnvironment() { Objects.requireNonNull(roundEnvironment, "ProcessContext#roundEnvironment is null; ensure newRound is called"); return roundEnvironment; }  void newRound(RoundEnvironment roundEnvironment); RoundEnvironment getRoundEnvironment();  }### Answer:
@Test void getRoundEnvironment_notSet_throwsNullPointerException() { ProcessorContext context = new ProcessorContext(processingEnvironmentMock); assertThatThrownBy(() -> context.getRoundEnvironment()).isInstanceOf(NullPointerException.class); }