1 files changed, 33 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-iframes.js b/devtools/client/debugger/test/mochitest/browser_dbg-iframes.js
new file mode 100644
index 0000000000..b0ec3be0bc
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-iframes.js
@@ -0,0 +1,33 @@
+/* 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/>. */
+
+// Test is taking too much time to complete on some hardware since
+// release at https://bugzilla.mozilla.org/show_bug.cgi?id=1423158
+requestLongerTimeout(3);
+
+/**
+ * Test debugging a page with iframes
+ *  1. pause in the main thread
+ *  2. pause in the iframe
+ */
+add_task(async function() {
+  const dbg = await initDebugger("doc-iframes.html");
+
+  // test pausing in the main thread
+  await reload(dbg);
+  await waitForPaused(dbg);
+  await waitForLoadedSource(dbg, "doc-iframes.html");
+  assertPausedLocation(dbg);
+
+  // test pausing in the iframe
+  await resume(dbg);
+  await waitForPaused(dbg);
+  await waitForLoadedSource(dbg, "doc-debugger-statements.html");
+  assertPausedLocation(dbg);
+
+  // test pausing in the iframe
+  await resume(dbg);
+  await waitForPaused(dbg);
+  assertPausedLocation(dbg);
+});