1 files changed, 31 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-highlights-calls.js b/devtools/client/debugger/test/mochitest/browser_dbg-highlights-calls.js
new file mode 100644
index 0000000000..98319cda51
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-highlights-calls.js
@@ -0,0 +1,31 @@
+/* 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/>. */
+
+// This test checks to see if command button highlights and unhighlights
+// calls when debugger is paused.
+
+"use strict";
+
+add_task(async function () {
+  await pushPref("devtools.debugger.features.command-click", true);
+  const dbg = await initDebugger("doc-command-click.html", "simple4.js");
+
+  const source = findSource(dbg, "simple4.js");
+
+  await selectSource(dbg, source);
+
+  invokeInTab("funcA");
+  await waitForPaused(dbg);
+  await waitForInlinePreviews(dbg);
+
+  pressKey(dbg, "commandKeyDown");
+  await waitForDispatch(dbg.store, "HIGHLIGHT_CALLS");
+  const calls = dbg.win.document.querySelectorAll(".highlight-function-calls");
+  is(calls.length, 2);
+  pressKey(dbg, "commandKeyUp");
+  const nocalls = dbg.win.document.querySelectorAll(
+    ".highlight-function-calls"
+  );
+  is(nocalls.length, 0);
+});