@Test
@SuppressWarnings("PMD.JUnitTestsShouldIncludeAssert")
public void testConvertSingleChanelImage() throws Exception {

  final Mat gompeiMat = new Mat();
  ImageLoadingUtility.loadImage(
      URLDecoder.decode(Paths.get(gompeiImage.file.toURI()).toString(),
          StandardCharsets.UTF_8.name()), gompeiMat);
  final Mat desaturatedMat = new Mat();
  cvtColor(gompeiMat, desaturatedMat, COLOR_BGR2GRAY);
  interact(() -> {
    Image javaFXImage = converter.convert(desaturatedMat);
    assertSameImage(gompeiImage, javaFXImage);
  });
}