зеркало из https://github.com/mozilla/gecko-dev.git
112 строки
3.7 KiB
JavaScript
112 строки
3.7 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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Cu.import("resource://gre/modules/Geometry.jsm", this);
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async function draw(window, src) {
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const { document, Image } = window;
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const promise = new Promise((resolve, reject) => {
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const img = new Image();
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img.onload = function() {
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// Create a new offscreen canvas
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const canvas = document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
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canvas.width = img.naturalWidth;
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canvas.height = img.naturalHeight;
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const ctx = canvas.getContext("2d");
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ctx.drawImage(img, 0, 0);
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resolve(canvas);
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};
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img.onerror = function() {
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reject(`error loading image ${src}`);
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};
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// Load the src image for drawing
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img.src = src;
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});
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return promise;
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}
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async function compareImages(window, expected, test) {
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const testCanvas = await draw(window, test);
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const expectedCanvas = await draw(window, expected);
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is(testCanvas.width, expectedCanvas.width, "The test and expected images must be the same size");
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is(testCanvas.height, expectedCanvas.height, "The test and expected images must be the same size");
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const nsIDOMWindowUtils = window.getInterface(Ci.nsIDOMWindowUtils);
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return nsIDOMWindowUtils.compareCanvases(expectedCanvas, testCanvas, {});
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}
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async function cropAndCompare(window, src, expected, test, region, subregions) {
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await TestRunner._cropImage(window, src, region, subregions, test);
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return compareImages(window, expected, OS.Path.toFileURI(test));
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}
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add_task(async function crop() {
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const window = Services.wm.getMostRecentWindow("navigator:browser");
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const tmp = OS.Constants.Path.tmpDir;
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is(await cropAndCompare(
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window,
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"chrome://mozscreenshots/content/lib/robot.png",
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"chrome://mozscreenshots/content/lib/robot_upperleft.png",
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OS.Path.join(tmp, "test_cropped_upperleft.png"),
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new Rect(0, 0, 32, 32),
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[new Rect(0, 0, 32, 32)]
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), 0, "The image should be cropped to the upper left quadrant");
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is(await cropAndCompare(
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window,
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"chrome://mozscreenshots/content/lib/robot.png",
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"chrome://mozscreenshots/content/lib/robot_center.png",
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OS.Path.join(tmp, "test_cropped_center.png"),
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new Rect(16, 16, 32, 32),
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[new Rect(16, 16, 32, 32)]
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), 0, "The image should be cropped to the center of the image");
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is(await cropAndCompare(
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window,
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"chrome://mozscreenshots/content/lib/robot.png",
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"chrome://mozscreenshots/content/lib/robot_uncropped.png",
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OS.Path.join(tmp, "test_uncropped.png"),
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new Rect(-8, -9, 80, 80),
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[new Rect(-8, -9, 80, 80)]
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), 0, "The image should be not be cropped, and the cropping region should be clipped to the size of the image");
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is(await cropAndCompare(
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window,
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"chrome://mozscreenshots/content/lib/robot.png",
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"chrome://mozscreenshots/content/lib/robot_diagonal.png",
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OS.Path.join(tmp, "test_diagonal.png"),
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new Rect(0, 0, 64, 64),
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[
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new Rect(0, 0, 16, 16),
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new Rect(16, 16, 16, 16),
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new Rect(32, 32, 16, 16),
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new Rect(48, 48, 16, 16)
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]
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), 0, "The image should be contain squares across the diagonal");
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is(await cropAndCompare(
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window,
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"chrome://mozscreenshots/content/lib/robot.png",
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"chrome://mozscreenshots/content/lib/robot_cropped_diagonal.png",
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OS.Path.join(tmp, "test_cropped_diagonal.png"),
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new Rect(16, 16, 48, 48),
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[
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new Rect(16, 16, 16, 16),
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new Rect(32, 32, 16, 16),
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]
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), 0, "The image should be cropped with squares across the diagonal");
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});
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