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/*
* Copyright 2020 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.zxing;
import org.junit.Assert;
import org.junit.Test;
import java.awt.image.BufferedImage;
/**
* Tests {@link InvertedLuminanceSource}.
*/
public final class InvertedLuminanceSourceTestCase extends Assert {
@Test
public void testInverted() {
BufferedImage image = new BufferedImage(2, 1, BufferedImage.TYPE_INT_RGB);
image.setRGB(0, 0, 0xFFFFFF);
LuminanceSource source = new BufferedImageLuminanceSource(image);
assertArrayEquals(new byte[] { (byte) 0xFF, 0 }, source.getRow(0, null));
LuminanceSource inverted = new InvertedLuminanceSource(source);
assertArrayEquals(new byte[] { 0, (byte) 0xFF }, inverted.getRow(0, null));
}
}
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