Bug 1306696 part 4 - Add test for this bug. r=smaug

MozReview-Commit-ID: 1Pzt6DPif00 --HG-- extra : source : 8e4d810704a278ea8130d8dc3c38c3173ca92a55
2018-09-28 14:28:54 +10:00 · 2018-09-28 14:28:54 +10:00 · 48a77c4938
--- a/dom/html/test/browser.ini
+++ b/dom/html/test/browser.ini
@ -29,7 +29,11 @@ support-files =
 tags = fullscreen
 [browser_fullscreen-contextmenu-esc.js]
 tags = fullscreen
+[browser_fullscreen-newtab.js]
+tags = fullscreen
+support-files = file_fullscreen-newtab.html
+skip-if = os == 'mac' # bug 1494843
 [browser_submission_flush.js]
 [browser_refresh_wyciwyg_url.js]
 support-files =
-  file_refresh_wyciwyg_url.html
+  file_refresh_wyciwyg_url.html
--- a/dom/html/test/browser_fullscreen-newtab.js
+++ b/dom/html/test/browser_fullscreen-newtab.js
@ -0,0 +1,80 @@
+"use strict";
+
+const kPage = "http://example.org/browser/" +
+              "dom/html/test/file_fullscreen-newtab.html";
+
+function getSizeMode() {
+  return document.documentElement.getAttribute("sizemode");
+}
+
+async function runTest() {
+  await BrowserTestUtils.withNewTab({
+    gBrowser,
+    url: kPage
+  }, async function (browser) {
+    await ContentTask.spawn(browser, null, function() {
+      content.document.addEventListener("fullscreenchange", () => {
+        sendAsyncMessage("Test:FullscreenChange");
+      });
+      content.document.addEventListener("fullscreenerror", () => {
+        sendAsyncMessage("Test:FullscreenError");
+      });
+    });
+    let promiseFsEvents = new Promise(resolve => {
+      let countFsChange = 0;
+      let countFsError = 0;
+      function checkAndResolve() {
+        if (countFsChange > 0 && countFsError > 0) {
+          ok(false, "Got both fullscreenchange and fullscreenerror events");
+        } else if (countFsChange > 2) {
+          ok(false, "Got too many fullscreenchange events");
+        } else if (countFsError > 1) {
+          ok(false, "Got too many fullscreenerror events");
+        } else if (countFsChange == 2 || countFsError == 1) {
+          resolve();
+        }
+      }
+      let mm = browser.messageManager;
+      mm.addMessageListener("Test:FullscreenChange", () => {
+        info("Got fullscreenchange event");
+        ++countFsChange;
+        checkAndResolve();
+      });
+      mm.addMessageListener("Test:FullscreenError", () => {
+        info("Got fullscreenerror event");
+        ++countFsError;
+        checkAndResolve();
+      });
+    });
+    let promiseNewTab =
+      BrowserTestUtils.waitForNewTab(gBrowser, "about:blank");
+    await BrowserTestUtils.synthesizeMouseAtCenter("#link", {}, browser);
+    let [newtab] = await Promise.all([promiseNewTab, promiseFsEvents]);
+    await BrowserTestUtils.removeTab(newtab);
+
+    // Ensure the browser exits fullscreen state in reasonable time.
+    await Promise.race([
+      BrowserTestUtils.waitForCondition(() => getSizeMode() == "normal"),
+      new Promise(resolve => setTimeout(resolve, 2000))
+    ]);
+
+    ok(!window.fullScreen, "The chrome window should not be in fullscreen");
+    ok(!document.fullscreen, "The chrome document should not be in fullscreen");
+  });
+}
+
+add_task(async function () {
+  await pushPrefs(
+    ["full-screen-api.unprefix.enabled", true],
+    ["full-screen-api.transition-duration.enter", "0 0"],
+    ["full-screen-api.transition-duration.leave", "0 0"]);
+  await runTest();
+});
+
+add_task(async function () {
+  await pushPrefs(
+    ["full-screen-api.unprefix.enabled", true],
+    ["full-screen-api.transition-duration.enter", "200 200"],
+    ["full-screen-api.transition-duration.leave", "200 200"]);
+  await runTest();
+});
--- a/dom/html/test/file_fullscreen-newtab.html
+++ b/dom/html/test/file_fullscreen-newtab.html
@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<a id="link" href="about:blank" target="_blank"
+   onclick="document.body.requestFullscreen()">Click here</a>