1 files changed, 106 insertions, 0 deletions
diff --git a/editor/libeditor/tests/browser_bug629172.js b/editor/libeditor/tests/browser_bug629172.js
new file mode 100644
index 0000000000..0c4f340692
--- /dev/null
+++ b/editor/libeditor/tests/browser_bug629172.js
@@ -0,0 +1,106 @@
+add_task(function*() {
+  yield new Promise(resolve => waitForFocus(resolve, window));
+
+  const kPageURL = "http://example.org/browser/editor/libeditor/tests/bug629172.html";
+  yield BrowserTestUtils.withNewTab({
+    gBrowser,
+    url: kPageURL
+  }, function*(aBrowser) {
+    yield ContentTask.spawn(aBrowser, {}, function*() {
+      var window = content.window.wrappedJSObject;
+      var document = window.document;
+
+      // Note: Using the with keyword, we would have been able to write this as:
+      //
+      // with (window) {
+      //   Screenshots = {};
+      //   // so on
+      // }
+      //
+      // However, browser-chrome tests are somehow forced to run in strict mode,
+      // which doesn't permit the usage of the with keyword, turning the following
+      // into the ugliest test you've ever seen.  :(
+      var LTRRef = document.getElementById("ltr-ref");
+      var RTLRef = document.getElementById("rtl-ref");
+      window.Screenshots = {};
+
+      // generate the reference screenshots
+      LTRRef.style.display = "";
+      document.body.clientWidth;
+      window.Screenshots.ltr = window.snapshotWindow(window);
+      LTRRef.parentNode.removeChild(LTRRef);
+      RTLRef.style.display = "";
+      document.body.clientWidth;
+      window.Screenshots.rtl = window.snapshotWindow(window);
+      RTLRef.parentNode.removeChild(RTLRef);
+      window.Screenshots.get = function(dir, flip) {
+        if (flip) {
+          return this[dir == "rtl" ? "ltr" : "rtl"];
+        } else {
+          return this[dir];
+        }
+      };
+    });
+
+    function simulateCtrlShiftX(aBrowser) {
+      // In e10s, the keypress event will be dispatched to the content process,
+      // but in non-e10s it is handled by the browser UI code and hence won't
+      // reach the web page.  As a result, we need to observe the event in
+      // the content process only in e10s mode.
+      var waitForKeypressContent = BrowserTestUtils.waitForContentEvent(aBrowser, "keypress");
+      EventUtils.synthesizeKey("x", {accelKey: true, shiftKey: true});
+      if (gMultiProcessBrowser) {
+        return waitForKeypressContent;
+      }
+      return Promise.resolve();
+    }
+
+    function* testDirection(initialDir, aBrowser) {
+      yield ContentTask.spawn(aBrowser, {initialDir}, function({initialDir}) {
+        var window = content.window.wrappedJSObject;
+        var document = window.document;
+
+        var t = window.t = document.createElement("textarea");
+        t.setAttribute("dir", initialDir);
+        t.value = "test.";
+        window.inputEventCount = 0;
+        t.oninput = function() { window.inputEventCount++; };
+        document.getElementById("content").appendChild(t);
+        document.body.clientWidth;
+        var s1 = window.snapshotWindow(window);
+        ok(window.compareSnapshots(s1, window.Screenshots.get(initialDir, false), true)[0],
+           "Textarea should appear correctly before switching the direction (" + initialDir + ")");
+        t.focus();
+        is(window.inputEventCount, 0, "input event count must be 0 before");
+      });
+      yield simulateCtrlShiftX(aBrowser);
+      yield ContentTask.spawn(aBrowser, {initialDir}, function({initialDir}) {
+        var window = content.window.wrappedJSObject;
+
+        is(window.t.getAttribute("dir"), initialDir == "ltr" ? "rtl" : "ltr", "The dir attribute must be correctly updated");
+        is(window.inputEventCount, 1, "input event count must be 1 after");
+        window.t.blur();
+        var s2 = window.snapshotWindow(window);
+        ok(window.compareSnapshots(s2, window.Screenshots.get(initialDir, true), true)[0],
+           "Textarea should appear correctly after switching the direction (" + initialDir + ")");
+        window.t.focus();
+        is(window.inputEventCount, 1, "input event count must be 1 before");
+      });
+      yield simulateCtrlShiftX(aBrowser);
+      yield ContentTask.spawn(aBrowser, {initialDir}, function({initialDir}) {
+        var window = content.window.wrappedJSObject;
+
+        is(window.inputEventCount, 2, "input event count must be 2 after");
+        is(window.t.getAttribute("dir"), initialDir == "ltr" ? "ltr" : "rtl", "The dir attribute must be correctly updated");
+        window.t.blur();
+        var s3 = window.snapshotWindow(window);
+        ok(window.compareSnapshots(s3, window.Screenshots.get(initialDir, false), true)[0],
+           "Textarea should appear correctly after switching back the direction (" + initialDir + ")");
+        window.t.parentNode.removeChild(window.t);
+      });
+    }
+
+    yield testDirection("ltr", aBrowser);
+    yield testDirection("rtl", aBrowser);
+  });
+});