@Test
public void testVerticalMerge() throws Exception {

	List<BufferedImage> images = new ArrayList<BufferedImage>();
	images.add(ImageIO.read(getClass().getResource("hifive_logo.png")));
	images.add(ImageIO.read(getClass().getResource("hifive_logo.png")));
	// expectedのvertical_merge.pngは事前に出力したImageUtils.verticalMergeの結果を使用
	BufferedImage expected = ImageIO.read(getClass().getResource("ImageUtilsTest_vertical_merge.png"));
	BufferedImage actual = ImageUtils.verticalMerge(images);
	assertThat(ImageUtils.imageEquals(expected, actual), is(true));
}