/**
* Checks that the input image contents are not altered, when using one of the constants defined
* in the {@link Rotation} class.
*/
@Test
public void inputContentsAreNotAltered_UsingConstantField() {
// given
BufferedImage originalImage = new BufferedImage(200, 200, BufferedImage.TYPE_INT_ARGB);
BufferedImage copyImage = BufferedImages.copy(originalImage);
ImageFilter filter = Rotation.LEFT_90_DEGREES;
// when
filter.apply(originalImage);
// then
assertTrue(BufferedImageComparer.isSame(originalImage, copyImage));
}
/**
* Checks that the input image contents are not altered, when using the {@link
* Rotation#newRotator(double)} method.
*/
@Test
public void inputContentsAreNotAltered_SpecifiedRotator() {
// given
BufferedImage originalImage = new BufferedImage(200, 200, BufferedImage.TYPE_INT_ARGB);
BufferedImage copyImage = BufferedImages.copy(originalImage);
ImageFilter filter = Rotation.newRotator(45);
// when
filter.apply(originalImage);
// then
assertTrue(BufferedImageComparer.isSame(originalImage, copyImage));
}