1 files changed, 36 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_jsterm_autocomplete_await.js b/devtools/client/webconsole/test/browser/browser_jsterm_autocomplete_await.js
new file mode 100644
index 0000000000..217f2f35e6
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_jsterm_autocomplete_await.js
@@ -0,0 +1,36 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// See Bug 585991.
+
+const TEST_URI = `data:text/html;charset=utf-8,<!DOCTYPE html>Autocomplete await expression`;
+
+add_task(async function () {
+  const hud = await openNewTabAndConsole(TEST_URI);
+  const { jsterm } = hud;
+  const { autocompletePopup } = jsterm;
+
+  info("Check that the await keyword is in the autocomplete");
+  await setInputValueForAutocompletion(hud, "aw");
+  checkInputCompletionValue(hud, "ait", "completeNode has expected value");
+
+  EventUtils.synthesizeKey("KEY_Tab");
+  is(getInputValue(hud), "await", "'await' tab completion");
+
+  const updated = jsterm.once("autocomplete-updated");
+  EventUtils.sendString(" ");
+  await updated;
+
+  info("Check that the autocomplete popup is displayed");
+  const onPopUpOpen = autocompletePopup.once("popup-opened");
+  EventUtils.sendString("P");
+  await onPopUpOpen;
+
+  ok(autocompletePopup.isOpen, "popup is open");
+  ok(
+    autocompletePopup.items.some(item => item.label === "Promise"),
+    "popup has expected `Promise` item"
+  );
+});