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a7d099d2a3
This change actually enabled the screenshot comparison in the visual regression tests. We used Docker to provision Chrome and ChromeDriver to eliminate the discrepancy of environment between local development and Travis CI. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=237811918
94 lines
3.2 KiB
Java
94 lines
3.2 KiB
Java
// Copyright 2019 The Nomulus Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.webdriver;
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import static com.google.common.base.Preconditions.checkNotNull;
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import static com.google.common.base.Preconditions.checkState;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayInputStream;
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import java.io.File;
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import java.io.IOException;
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import java.io.UncheckedIOException;
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import java.util.Arrays;
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import javax.imageio.ImageIO;
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import javax.imageio.ImageReader;
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/** An immutable class represents a screenshot taken in a visual regression test. */
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public class ActualScreenshot {
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public static final String IMAGE_FORMAT = "png";
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private String imageKey;
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private BufferedImage bufferedImage;
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private ActualScreenshot(String imageKey, BufferedImage bufferedImage) {
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this.imageKey = imageKey;
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this.bufferedImage = bufferedImage;
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}
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/** Creates an ActualScreenshot from the given image format and byte array. */
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public static ActualScreenshot create(String imageKey, byte[] imageBytes) {
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checkNotNull(imageKey);
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checkNotNull(imageBytes);
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byte[] imageBytesClone = Arrays.copyOf(imageBytes, imageBytes.length);
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ByteArrayInputStream imageInputStream = new ByteArrayInputStream(imageBytesClone);
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ImageReader imageReader = ImageIO.getImageReadersByFormatName(IMAGE_FORMAT).next();
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try {
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imageReader.setInput(checkNotNull(ImageIO.createImageInputStream(imageInputStream)));
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BufferedImage bufferedImage = checkNotNull(imageReader.read(0));
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return new ActualScreenshot(imageKey, bufferedImage);
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} catch (IOException e) {
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throw new UncheckedIOException(e);
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}
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}
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/** {@link BufferedImage#getSubimage(int, int, int, int)} */
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public ActualScreenshot getSubimage(int x, int y, int w, int h) {
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return new ActualScreenshot(imageKey, bufferedImage.getSubimage(x, y, w, h));
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}
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/** {@link BufferedImage#getWidth()} */
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public int getWidth() {
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return bufferedImage.getWidth();
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}
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/** {@link BufferedImage#getHeight()} */
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public int getHeight() {
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return bufferedImage.getHeight();
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}
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/** {@link BufferedImage#getRGB(int, int)} */
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public int getRGB(int x, int y) {
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return bufferedImage.getRGB(x, y);
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}
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/** Writes the underlying BufferedImage to the given file. */
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public void writeTo(File file) {
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try {
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checkState(ImageIO.write(bufferedImage, IMAGE_FORMAT, checkNotNull(file)));
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} catch (IOException e) {
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throw new UncheckedIOException(e);
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}
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}
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/** Returns the imageKey of the screenshot. */
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public String getImageKey() {
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return imageKey;
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}
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/** Returns the concat of imageKey and imageFormat. */
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public String getImageName() {
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return String.join(".", imageKey, IMAGE_FORMAT);
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}
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}
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