1 files changed, 50 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-console-async.js b/devtools/client/debugger/test/mochitest/browser_dbg-console-async.js
new file mode 100644
index 0000000000..4c669766b0
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-console-async.js
@@ -0,0 +1,50 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+// Return a promise with a reference to jsterm, opening the split
+// console if necessary.  This cleans up the split console pref so
+// it won't pollute other tests.
+
+"use strict";
+
+add_task(async function () {
+  Services.prefs.setBoolPref("devtools.toolbox.splitconsoleEnabled", true);
+  Services.prefs.setBoolPref(
+    "devtools.debugger.features.map-await-expression",
+    true
+  );
+
+  const dbg = await initDebugger(
+    "doc-script-switching.html",
+    "script-switching-01.js"
+  );
+
+  await selectSource(dbg, "script-switching-01.js");
+
+  // open the console
+  await getDebuggerSplitConsole(dbg);
+  ok(dbg.toolbox.splitConsole, "Split console is shown.");
+
+  const webConsole = await dbg.toolbox.getPanel("webconsole");
+  const wrapper = webConsole.hud.ui.wrapper;
+
+  wrapper.dispatchEvaluateExpression(`
+    let sleep = async (time, v) => new Promise(
+      res => setTimeout(() => res(v+'!!!'), time)
+    )
+  `);
+
+  await hasMessageByType(dbg, "sleep", ".command");
+
+  wrapper.dispatchEvaluateExpression(`await sleep(200, "DONE")`);
+  await hasMessageByType(dbg, "DONE!!!", ".result");
+});
+
+async function hasMessageByType(dbg, msg, typeSelector) {
+  const webConsole = await dbg.toolbox.getPanel("webconsole");
+  const hud = webConsole.hud;
+  return waitFor(
+    async () => !!findMessagesByType(hud, msg, typeSelector).length
+  );
+}