1 files changed, 47 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..6fcf4c63a4
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-console-async.js
@@ -0,0 +1,47 @@
+// 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.
+
+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", "switching-01");
+
+  await selectSource(dbg, "switching-01");
+
+  // 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 hasMessage(dbg, "sleep");
+
+  wrapper.dispatchEvaluateExpression(`await sleep(200, "DONE")`);
+  await hasMessage(dbg, "DONE!!!");
+});
+
+function findMessages(win, query) {
+  return Array.prototype.filter.call(
+    win.document.querySelectorAll(".message"),
+    e => e.innerText.includes(query)
+  );
+}
+
+async function hasMessage(dbg, msg) {
+  const webConsole = await dbg.toolbox.getPanel("webconsole");
+  return waitFor(
+    async () => findMessages(webConsole._frameWindow, msg).length > 0
+  );
+}