1 files changed, 38 insertions, 0 deletions
diff --git a/devtools/client/performance/test/browser_perf-options-02-toggle-throw-alt.js b/devtools/client/performance/test/browser_perf-options-02-toggle-throw-alt.js
new file mode 100644
index 000000000..cdea1556a
--- /dev/null
+++ b/devtools/client/performance/test/browser_perf-options-02-toggle-throw-alt.js
@@ -0,0 +1,38 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+/**
+ * Tests that toggling preferences during a recording does not throw.
+ */
+
+const { SIMPLE_URL } = require("devtools/client/performance/test/helpers/urls");
+const { initPerformanceInNewTab, teardownToolboxAndRemoveTab } = require("devtools/client/performance/test/helpers/panel-utils");
+const { startRecording, stopRecording } = require("devtools/client/performance/test/helpers/actions");
+
+add_task(function* () {
+  let { panel } = yield initPerformanceInNewTab({
+    url: SIMPLE_URL,
+    win: window
+  });
+
+  let { DetailsView, JsCallTreeView } = panel.panelWin;
+
+  yield DetailsView.selectView("js-calltree");
+  yield startRecording(panel);
+
+  // Manually call the _onPrefChanged function so we can catch an error.
+  try {
+    JsCallTreeView._onPrefChanged(null, "invert-call-tree", true);
+    ok(true, "Toggling preferences during a recording should not fail.");
+  } catch (e) {
+    ok(false, "Toggling preferences during a recording should not fail.");
+  }
+
+  yield stopRecording(panel, {
+    expectedViewClass: "JsCallTreeView",
+    expectedViewEvent: "UI_JS_CALL_TREE_RENDERED"
+  });
+
+  yield teardownToolboxAndRemoveTab(panel);
+});