import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

devtools/server/tests/browser/browser_markers-gc.js

@@ -0,0 +1,50 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Test that we get "GarbageCollection" markers.
+ */
+
+const { PerformanceFront } = require("devtools/shared/fronts/performance");
+const MARKER_NAME = "GarbageCollection";
+
+add_task(function* () {
+  let browser = yield addTab(MAIN_DOMAIN + "doc_force_gc.html");
+  let doc = browser.contentDocument;
+
+  initDebuggerServer();
+  let client = new DebuggerClient(DebuggerServer.connectPipe());
+  let form = yield connectDebuggerClient(client);
+  let front = PerformanceFront(client, form);
+  yield front.connect();
+  let rec = yield front.startRecording({ withMarkers: true });
+
+  let markers = yield waitForMarkerType(front, MARKER_NAME);
+  yield front.stopRecording(rec);
+
+  ok(markers.some(m => m.name === MARKER_NAME), `got some ${MARKER_NAME} markers`);
+  ok(markers.every(({causeName}) => typeof causeName === "string"),
+    "All markers have a causeName.");
+  ok(markers.every(({cycle}) => typeof cycle === "number"),
+    "All markers have a `cycle` ID.");
+
+  markers = rec.getMarkers();
+
+  // Bug 1197646
+  let ordered = true;
+  markers.reduce((previousStart, current, i) => {
+    if (i === 0) {
+      return current.start;
+    }
+    if (current.start < previousStart) {
+      ok(false, `markers must be in order. ${current.name} marker has later start time (${current.start}) thanprevious: ${previousStart}`);
+      ordered = false;
+    }
+    return current.start;
+  });
+
+  is(ordered, true, "All GC and non-GC markers are in order by start time.");
+
+  yield client.close();
+  gBrowser.removeCurrentTab();
+});