1 files changed, 58 insertions, 0 deletions
diff --git a/devtools/client/performance/test/browser_perf-options-enable-memory-01.js b/devtools/client/performance/test/browser_perf-options-enable-memory-01.js
new file mode 100644
index 000000000..9785d54d6
--- /dev/null
+++ b/devtools/client/performance/test/browser_perf-options-enable-memory-01.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+/**
+ * Tests that `enable-memory` toggles the visibility of the memory graph,
+ * as well as enabling memory data on the PerformanceFront.
+ */
+
+const { SIMPLE_URL } = require("devtools/client/performance/test/helpers/urls");
+const { UI_ENABLE_MEMORY_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 { isVisible } = require("devtools/client/performance/test/helpers/dom-utils");
+
+add_task(function* () {
+  let { panel } = yield initPerformanceInNewTab({
+    url: SIMPLE_URL,
+    win: window
+  });
+
+  let { $, PerformanceController } = panel.panelWin;
+
+  // Disable memory to test.
+  Services.prefs.setBoolPref(UI_ENABLE_MEMORY_PREF, false);
+
+  yield startRecording(panel);
+  yield stopRecording(panel);
+
+  is(PerformanceController.getCurrentRecording().getConfiguration().withMemory, false,
+    "PerformanceFront started without memory recording.");
+  is(PerformanceController.getCurrentRecording().getConfiguration().withAllocations,
+    false, "PerformanceFront started without allocations recording.");
+  ok(!isVisible($("#memory-overview")),
+    "The memory graph is hidden when memory disabled.");
+
+  // Re-enable memory.
+  Services.prefs.setBoolPref(UI_ENABLE_MEMORY_PREF, true);
+
+  is(PerformanceController.getCurrentRecording().getConfiguration().withMemory, false,
+    "PerformanceFront still marked without memory recording.");
+  is(PerformanceController.getCurrentRecording().getConfiguration().withAllocations,
+    false, "PerformanceFront still marked without allocations recording.");
+  ok(!isVisible($("#memory-overview")), "memory graph is still hidden after enabling " +
+                                        "if recording did not start recording memory");
+
+  yield startRecording(panel);
+  yield stopRecording(panel);
+
+  is(PerformanceController.getCurrentRecording().getConfiguration().withMemory, true,
+    "PerformanceFront started with memory recording.");
+  is(PerformanceController.getCurrentRecording().getConfiguration().withAllocations,
+    false, "PerformanceFront did not record with allocations.");
+  ok(isVisible($("#memory-overview")),
+    "The memory graph is not hidden when memory enabled before recording.");
+
+  yield teardownToolboxAndRemoveTab(panel);
+});