@Test
public void do_nothing_when_no_groovy_file() throws IOException {

  SensorContextTester context = SensorContextTester.create(new File(""));
  context = Mockito.spy(context);
  sensor = new GroovySensor(settings, fileLinesContextFactory, context.fileSystem());
  sensor.execute(context);
  Mockito.verify(context, Mockito.never()).newHighlighting();
}