1 files changed, 52 insertions, 0 deletions
diff --git a/dom/tests/browser/browser_bug1316330.js b/dom/tests/browser/browser_bug1316330.js
new file mode 100644
index 0000000000..c81d489cf7
--- /dev/null
+++ b/dom/tests/browser/browser_bug1316330.js
@@ -0,0 +1,52 @@
+const URL =
+  "data:text/html,<script>" +
+  "window.focus();" +
+  "var down = 0; var press = 0;" +
+  "onkeydown = function(e) {" +
+  "  var startTime = Date.now();" +
+  "  document.body.setAttribute('data-down', ++down);" +
+  "  if (e.keyCode == KeyboardEvent.DOM_VK_D) while (Date.now() - startTime < 500) {}" +
+  "};" +
+  "onkeypress = function(e) {" +
+  "  var startTime = Date.now();" +
+  "  document.body.setAttribute('data-press', ++press);" +
+  "  if (e.charCode == 'p'.charCodeAt(0)) while (Date.now() - startTime < 500) {}" +
+  "};" +
+  "</script>";
+
+add_task(async function () {
+  let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, URL);
+  let browser = tab.linkedBrowser;
+
+  await EventUtils.synthesizeAndWaitKey("d", { repeat: 3 });
+
+  await SpecialPowers.spawn(browser, [], async function () {
+    is(
+      content.document.body.getAttribute("data-down"),
+      "2",
+      "Correct number of events"
+    );
+    is(
+      content.document.body.getAttribute("data-press"),
+      "2",
+      "Correct number of events"
+    );
+  });
+
+  await EventUtils.synthesizeAndWaitKey("p", { repeat: 3 });
+
+  await SpecialPowers.spawn(browser, [], async function () {
+    is(
+      content.document.body.getAttribute("data-down"),
+      "4",
+      "Correct number of events"
+    );
+    is(
+      content.document.body.getAttribute("data-press"),
+      "4",
+      "Correct number of events"
+    );
+  });
+
+  gBrowser.removeCurrentTab();
+});