1 files changed, 63 insertions, 0 deletions
diff --git a/devtools/client/performance/test/browser_perf-options-invert-flame-graph-02.js b/devtools/client/performance/test/browser_perf-options-invert-flame-graph-02.js
new file mode 100644
index 0000000000..a968c17c68
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+++ b/devtools/client/performance/test/browser_perf-options-invert-flame-graph-02.js
@@ -0,0 +1,63 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+/**
+ * Tests that the memory flamegraphs views get rerendered when toggling
+ * `invert-flame-graph`.
+ */
+
+const { SIMPLE_URL } = require("devtools/client/performance/test/helpers/urls");
+const {
+  UI_ENABLE_ALLOCATIONS_PREF,
+  UI_INVERT_FLAME_PREF,
+} = require("devtools/client/performance/test/helpers/prefs");
+const {
+  initPerformanceInNewTab,
+  teardownToolboxAndRemoveTab,
+} = require("devtools/client/performance/test/helpers/panel-utils");
+const {
+  startRecording,
+  stopRecording,
+} = require("devtools/client/performance/test/helpers/actions");
+const {
+  once,
+} = require("devtools/client/performance/test/helpers/event-utils");
+
+add_task(async function() {
+  const { panel } = await initPerformanceInNewTab({
+    url: SIMPLE_URL,
+    win: window,
+  });
+
+  const { EVENTS, DetailsView, MemoryFlameGraphView } = panel.panelWin;
+
+  // Enable allocations to test.
+  Services.prefs.setBoolPref(UI_ENABLE_ALLOCATIONS_PREF, true);
+  Services.prefs.setBoolPref(UI_INVERT_FLAME_PREF, true);
+
+  await startRecording(panel);
+  await stopRecording(panel);
+
+  let rendered = once(
+    MemoryFlameGraphView,
+    EVENTS.UI_MEMORY_FLAMEGRAPH_RENDERED
+  );
+  await DetailsView.selectView("memory-flamegraph");
+  await rendered;
+
+  rendered = once(MemoryFlameGraphView, EVENTS.UI_MEMORY_FLAMEGRAPH_RENDERED);
+  Services.prefs.setBoolPref(UI_INVERT_FLAME_PREF, false);
+  await rendered;
+  ok(true, "MemoryFlameGraphView rerendered when toggling invert-call-tree.");
+
+  rendered = once(MemoryFlameGraphView, EVENTS.UI_MEMORY_FLAMEGRAPH_RENDERED);
+  Services.prefs.setBoolPref(UI_INVERT_FLAME_PREF, true);
+  await rendered;
+  ok(
+    true,
+    "MemoryFlameGraphView rerendered when toggling back invert-call-tree."
+  );
+
+  await teardownToolboxAndRemoveTab(panel);
+});