1 files changed, 53 insertions, 0 deletions
diff --git a/devtools/client/performance/test/browser_perf-telemetry-01.js b/devtools/client/performance/test/browser_perf-telemetry-01.js
new file mode 100644
index 000000000..2c37e6c5a
--- /dev/null
+++ b/devtools/client/performance/test/browser_perf-telemetry-01.js
@@ -0,0 +1,53 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+/**
+ * Tests that the performance telemetry module records events at appropriate times.
+ * Specificaly the state about a recording process.
+ */
+
+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");
+
+add_task(function* () {
+  let { panel } = yield initPerformanceInNewTab({
+    url: SIMPLE_URL,
+    win: window
+  });
+
+  let { PerformanceController } = panel.panelWin;
+
+  let telemetry = PerformanceController._telemetry;
+  let logs = telemetry.getLogs();
+  let DURATION = "DEVTOOLS_PERFTOOLS_RECORDING_DURATION_MS";
+  let COUNT = "DEVTOOLS_PERFTOOLS_RECORDING_COUNT";
+  let CONSOLE_COUNT = "DEVTOOLS_PERFTOOLS_CONSOLE_RECORDING_COUNT";
+  let FEATURES = "DEVTOOLS_PERFTOOLS_RECORDING_FEATURES_USED";
+
+  Services.prefs.setBoolPref(UI_ENABLE_MEMORY_PREF, false);
+
+  yield startRecording(panel);
+  yield stopRecording(panel);
+
+  Services.prefs.setBoolPref(UI_ENABLE_MEMORY_PREF, true);
+
+  yield startRecording(panel);
+  yield stopRecording(panel);
+
+  is(logs[DURATION].length, 2, `There are two entries for ${DURATION}.`);
+  ok(logs[DURATION].every(d => typeof d === "number"),
+     `Every ${DURATION} entry is a number.`);
+  is(logs[COUNT].length, 2, `There are two entries for ${COUNT}.`);
+  is(logs[CONSOLE_COUNT], void 0, `There are no entries for ${CONSOLE_COUNT}.`);
+  is(logs[FEATURES].length, 8,
+     `There are two recordings worth of entries for ${FEATURES}.`);
+  ok(logs[FEATURES].find(r => r[0] === "withMemory" && r[1] === true),
+     "One feature entry for memory enabled.");
+  ok(logs[FEATURES].find(r => r[0] === "withMemory" && r[1] === false),
+    "One feature entry for memory disabled.");
+
+  yield teardownToolboxAndRemoveTab(panel);
+});