1 files changed, 61 insertions, 0 deletions
diff --git a/devtools/client/framework/test/metrics/browser_metrics_debugger.js b/devtools/client/framework/test/metrics/browser_metrics_debugger.js
new file mode 100644
index 0000000000..4a684e40fc
--- /dev/null
+++ b/devtools/client/framework/test/metrics/browser_metrics_debugger.js
@@ -0,0 +1,61 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * This test records the number of modules loaded by DevTools, as well as the total count
+ * of characters in those modules, when opening the debugger. These metrics are
+ * retrieved by perfherder via logs.
+ */
+
+const TEST_URL =
+  "data:text/html;charset=UTF-8,<div>Debugger modules load test</div>";
+
+add_task(async function () {
+  // Disable randomly spawning processes during tests
+  await pushPref("dom.ipc.processPrelaunch.enabled", false);
+
+  const toolbox = await openNewTabAndToolbox(TEST_URL, "jsdebugger");
+  const toolboxBrowserLoader = toolbox.win.getBrowserLoaderForWindow();
+
+  // Retrieve the browser loader dedicated to the Debugger.
+  const panel = toolbox.getCurrentPanel();
+  const debuggerLoader = panel.panelWin.getBrowserLoaderForWindow();
+
+  const loaders = [
+    loader.loader,
+    toolboxBrowserLoader.loader,
+    debuggerLoader.loader,
+  ];
+
+  const allowedDupes = [
+    "@loader/unload.js",
+    "@loader/options.js",
+    "resource://devtools/client/shared/vendor/fluent-react.js",
+    "resource://devtools/client/shared/vendor/react-dom.js",
+    "resource://devtools/client/shared/vendor/react.js",
+    "resource://devtools/client/shared/vendor/react-prop-types.js",
+    "resource://devtools/client/shared/vendor/react-dom-factories.js",
+    "resource://devtools/client/shared/vendor/react-redux.js",
+    "resource://devtools/client/shared/vendor/redux.js",
+    "resource://devtools/client/shared/redux/subscriber.js",
+
+    "resource://devtools/client/shared/components/menu/MenuButton.js",
+    "resource://devtools/client/shared/components/menu/MenuItem.js",
+    "resource://devtools/client/shared/components/menu/MenuList.js",
+  ];
+  runDuplicatedModulesTest(loaders, allowedDupes);
+
+  runMetricsTest({
+    filterString: "devtools/client/debugger",
+    loaders,
+    panelName: "debugger",
+  });
+
+  // See Bug 1637793 and Bug 1621337.
+  // Ideally the debugger should only resolve when the worker targets have been
+  // retrieved, which should be fixed by Bug 1621337 or a followup.
+  info("Wait for all pending requests to settle on the DevToolsClient");
+  await toolbox.commands.client.waitForRequestsToSettle();
+});