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-rw-r--r--browser/components/shell/test/head.js159
1 files changed, 159 insertions, 0 deletions
diff --git a/browser/components/shell/test/head.js b/browser/components/shell/test/head.js
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+++ b/browser/components/shell/test/head.js
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+"use strict";
+
+const { Subprocess } = ChromeUtils.importESModule(
+ "resource://gre/modules/Subprocess.sys.mjs"
+);
+
+const TEMP_DIR = Services.dirsvc.get("TmpD", Ci.nsIFile).path;
+
+const screenshotPath = PathUtils.join(TEMP_DIR, "headless_test_screenshot.png");
+
+async function runFirefox(args) {
+ const XRE_EXECUTABLE_FILE = "XREExeF";
+ const firefoxExe = Services.dirsvc.get(XRE_EXECUTABLE_FILE, Ci.nsIFile).path;
+ const NS_APP_PREFS_50_FILE = "PrefF";
+ const mochiPrefsFile = Services.dirsvc.get(NS_APP_PREFS_50_FILE, Ci.nsIFile);
+ const mochiPrefsPath = mochiPrefsFile.path;
+ const mochiPrefsName = mochiPrefsFile.leafName;
+ const profilePath = PathUtils.join(
+ TEMP_DIR,
+ "headless_test_screenshot_profile"
+ );
+ const prefsPath = PathUtils.join(profilePath, mochiPrefsName);
+ const firefoxArgs = ["-profile", profilePath, "-no-remote"];
+
+ await IOUtils.makeDirectory(profilePath);
+ await IOUtils.copy(mochiPrefsPath, prefsPath);
+ let proc = await Subprocess.call({
+ command: firefoxExe,
+ arguments: firefoxArgs.concat(args),
+ // Disable leak detection to avoid intermittent failure bug 1331152.
+ environmentAppend: true,
+ environment: {
+ ASAN_OPTIONS:
+ "detect_leaks=0:quarantine_size=50331648:malloc_context_size=5",
+ // Don't enable Marionette.
+ MOZ_MARIONETTE: null,
+ },
+ });
+ let stdout;
+ while ((stdout = await proc.stdout.readString())) {
+ dump(`>>> ${stdout}\n`);
+ }
+ let { exitCode } = await proc.wait();
+ is(exitCode, 0, "Firefox process should exit with code 0");
+ await IOUtils.remove(profilePath, { recursive: true });
+}
+
+async function testFileCreationPositive(args, path) {
+ await runFirefox(args);
+
+ let saved = IOUtils.exists(path);
+ ok(saved, "A screenshot should be saved as " + path);
+ if (!saved) {
+ return;
+ }
+
+ let info = await IOUtils.stat(path);
+ ok(info.size > 0, "Screenshot should not be an empty file");
+ await IOUtils.remove(path);
+}
+
+async function testFileCreationNegative(args, path) {
+ await runFirefox(args);
+
+ let saved = await IOUtils.exists(path);
+ ok(!saved, "A screenshot should not be saved");
+ await IOUtils.remove(path);
+}
+
+async function testWindowSizePositive(width, height) {
+ let size = String(width);
+ if (height) {
+ size += "," + height;
+ }
+
+ await runFirefox([
+ "-url",
+ "http://mochi.test:8888/browser/browser/components/shell/test/headless.html",
+ "-screenshot",
+ screenshotPath,
+ "-window-size",
+ size,
+ ]);
+
+ let saved = await IOUtils.exists(screenshotPath);
+ ok(saved, "A screenshot should be saved in the tmp directory");
+ if (!saved) {
+ return;
+ }
+
+ let data = await IOUtils.read(screenshotPath);
+ await new Promise((resolve, reject) => {
+ let blob = new Blob([data], { type: "image/png" });
+ let reader = new FileReader();
+ reader.onloadend = function() {
+ let screenshot = new Image();
+ screenshot.onload = function() {
+ is(
+ screenshot.width,
+ width,
+ "Screenshot should be " + width + " pixels wide"
+ );
+ if (height) {
+ is(
+ screenshot.height,
+ height,
+ "Screenshot should be " + height + " pixels tall"
+ );
+ }
+ resolve();
+ };
+ screenshot.src = reader.result;
+ };
+ reader.readAsDataURL(blob);
+ });
+ await IOUtils.remove(screenshotPath);
+}
+
+async function testGreen(url, path) {
+ await runFirefox(["-url", url, `--screenshot=${path}`]);
+
+ let saved = await IOUtils.exists(path);
+ ok(saved, "A screenshot should be saved in the tmp directory");
+ if (!saved) {
+ return;
+ }
+
+ let data = await IOUtils.read(path);
+ let image = await new Promise((resolve, reject) => {
+ let blob = new Blob([data], { type: "image/png" });
+ let reader = new FileReader();
+ reader.onloadend = function() {
+ let screenshot = new Image();
+ screenshot.onload = function() {
+ resolve(screenshot);
+ };
+ screenshot.src = reader.result;
+ };
+ reader.readAsDataURL(blob);
+ });
+ let canvas = document.createElement("canvas");
+ canvas.width = image.naturalWidth;
+ canvas.height = image.naturalHeight;
+ let ctx = canvas.getContext("2d");
+ ctx.drawImage(image, 0, 0);
+ let imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
+ let rgba = imageData.data;
+
+ let found = false;
+ for (let i = 0; i < rgba.length; i += 4) {
+ if (rgba[i] === 0 && rgba[i + 1] === 255 && rgba[i + 2] === 0) {
+ found = true;
+ break;
+ }
+ }
+ ok(found, "There should be a green pixel in the screenshot.");
+
+ await IOUtils.remove(path);
+}