1 files changed, 78 insertions, 0 deletions
diff --git a/editor/libeditor/tests/browser_bug527935.js b/editor/libeditor/tests/browser_bug527935.js
new file mode 100644
index 0000000000..cece783491
--- /dev/null
+++ b/editor/libeditor/tests/browser_bug527935.js
@@ -0,0 +1,78 @@
+add_task(async function () {
+  await new Promise(resolve => waitForFocus(resolve, window));
+
+  const kPageURL =
+    "http://example.org/browser/editor/libeditor/tests/bug527935.html";
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: kPageURL,
+    },
+    async function (aBrowser) {
+      var popupShown = false;
+      function listener() {
+        popupShown = true;
+      }
+      SpecialPowers.addAutoCompletePopupEventListener(
+        window,
+        "popupshowing",
+        listener
+      );
+
+      await SpecialPowers.spawn(aBrowser, [], async function () {
+        var window = content.window.wrappedJSObject;
+        var document = window.document;
+        var formTarget = document.getElementById("formTarget");
+        var initValue = document.getElementById("initValue");
+
+        window.loadPromise = new Promise(resolve => {
+          formTarget.onload = resolve;
+        });
+
+        initValue.focus();
+        initValue.value = "foo";
+      });
+
+      EventUtils.synthesizeKey("KEY_Enter");
+
+      await SpecialPowers.spawn(aBrowser, [], async function () {
+        var window = content.window.wrappedJSObject;
+        var document = window.document;
+
+        await window.loadPromise;
+
+        var newInput = document.createElement("input");
+        newInput.setAttribute("name", "test");
+        document.body.appendChild(newInput);
+
+        var event = new window.KeyboardEvent("keypress", {
+          bubbles: true,
+          cancelable: true,
+          view: null,
+          keyCode: 0,
+          charCode: "f".charCodeAt(0),
+        });
+        newInput.value = "";
+        newInput.focus();
+        newInput.dispatchEvent(event);
+      });
+
+      await new Promise(resolve => hitEventLoop(resolve, 100));
+
+      ok(!popupShown, "Popup must not be opened");
+      SpecialPowers.removeAutoCompletePopupEventListener(
+        window,
+        "popupshowing",
+        listener
+      );
+    }
+  );
+});
+
+function hitEventLoop(func, times) {
+  if (times > 0) {
+    setTimeout(hitEventLoop, 0, func, times - 1);
+  } else {
+    setTimeout(func, 0);
+  }
+}