1 files changed, 51 insertions, 0 deletions
diff --git a/browser/base/content/test/forms/head.js b/browser/base/content/test/forms/head.js
new file mode 100644
index 0000000000..1629c6a57c
--- /dev/null
+++ b/browser/base/content/test/forms/head.js
@@ -0,0 +1,51 @@
+async function openSelectPopup(
+  mode = "key",
+  selector = "select",
+  win = window
+) {
+  info("Opening select popup");
+  let popupShownPromise = BrowserTestUtils.waitForSelectPopupShown(win);
+  if (mode == "click" || mode == "mousedown") {
+    let mousePromise;
+    if (mode == "click") {
+      mousePromise = BrowserTestUtils.synthesizeMouseAtCenter(
+        selector,
+        {},
+        win.gBrowser.selectedBrowser
+      );
+    } else {
+      mousePromise = BrowserTestUtils.synthesizeMouse(
+        selector,
+        5,
+        5,
+        { type: "mousedown" },
+        win.gBrowser.selectedBrowser
+      );
+    }
+    await mousePromise;
+  } else {
+    EventUtils.synthesizeKey("KEY_ArrowDown", { altKey: true }, win);
+  }
+  return popupShownPromise;
+}
+
+function hideSelectPopup(mode = "enter", win = window) {
+  let browser = win.gBrowser.selectedBrowser;
+  let selectClosedPromise = SpecialPowers.spawn(browser, [], async function () {
+    let { SelectContentHelper } = ChromeUtils.importESModule(
+      "resource://gre/actors/SelectChild.sys.mjs"
+    );
+    return ContentTaskUtils.waitForCondition(() => !SelectContentHelper.open);
+  });
+
+  if (mode == "escape") {
+    EventUtils.synthesizeKey("KEY_Escape", {}, win);
+  } else if (mode == "enter") {
+    EventUtils.synthesizeKey("KEY_Enter", {}, win);
+  } else if (mode == "click") {
+    let popup = win.document.getElementById("ContentSelectDropdown").menupopup;
+    EventUtils.synthesizeMouseAtCenter(popup.lastElementChild, {}, win);
+  }
+
+  return selectClosedPromise;
+}