Bug 1558988 [wpt PR 17242] - Prevent fooling PerformanceObserver.supportedEntryTypes, a=testonly

Automatic update from web-platform-tests
Prevent fooling PerformanceObserver.supportedEntryTypes (#17242)

* Prevent fooling PerformanceObserver.supportedEntryTypes

* Split between any and window

* Long task is only on Window

* CRLF -> LF

--

wpt-commits: 2d2b6ee35d5f4c82c2f698fdb50c49583e8c7f70
wpt-pr: 17242

testing/web-platform/tests/timing-entrytypes-registry/META.yml

@@ -0,0 +1,6 @@
+spec: https://w3c.github.io/navigation-timing/
+suggested_reviewers:
+  - plehegar
+  - igrigorik
+  - toddreifsteck
+  - yoavweiss

testing/web-platform/tests/timing-entrytypes-registry/registry.any.js

@@ -0,0 +1,25 @@
+// META: script=resources/utils.js
+
+test(() => {
+  assert_true(!!self.PerformanceObserver, "PerformanceObserver");
+  assert_true(!!self.PerformanceObserver.supportedEntryTypes,
+              "PerformanceObserver.supportedEntryTypes");
+}, "PerformanceObserver.supportedEntryTypes exists");
+
+// UPDATE HERE if new entry
+[
+  [ "mark", "PerformanceMark" ],
+  [ "measure", "PerformanceMeasure" ],
+  [ "resource", "PerformanceResourceTiming" ],
+].forEach(test_support);
+
+// UPDATE BELOW to ensure the entry gets created
+
+// mark
+self.performance.mark('mymark');
+
+// measure
+self.performance.measure('mymeasure');
+
+// resource
+fetch(self.location.href + "?" + Math.random());

testing/web-platform/tests/timing-entrytypes-registry/registry.window.js

@@ -0,0 +1,33 @@
+// META: script=resources/utils.js
+
+test(() => {
+  assert_true(!!self.PerformanceObserver, "PerformanceObserver");
+  assert_true(!!self.PerformanceObserver.supportedEntryTypes,
+              "PerformanceObserver.supportedEntryTypes");
+}, "PerformanceObserver.supportedEntryTypes exists");
+
+// UPDATE HERE if new entry
+[
+  [ "navigation", "PerformanceNavigationTiming" ],
+  [ "paint", "PerformancePaintTiming" ],
+  [ "longtask", "PerformanceLongTaskTiming" ],
+].forEach(test_support);
+
+// UPDATE BELOW to ensure the entry gets created
+
+// paint
+if (self.document) document.head.parentNode.appendChild(document.createTextNode('text inserted on purpose'));
+
+// longtask
+function syncWait(waitDuration) {
+  if (waitDuration <= 0)
+    return;
+
+  const startTime = performance.now();
+  let unused = '';
+  for (let i = 0; i < 10000; i++)
+    unused += '' + Math.random();
+
+  return syncWait(waitDuration - (performance.now() - startTime));
+}
+syncWait(50);

testing/web-platform/tests/timing-entrytypes-registry/resources/utils.js

@@ -0,0 +1,29 @@
+const STEPS = {};
+
+const types = (self.PerformanceObserver
+                  && self.PerformanceObserver.supportedEntryTypes)?
+    self.PerformanceObserver.supportedEntryTypes
+    : undefined;
+
+if (types) {
+  // we observe everything as soon as possible
+  new PerformanceObserver(function (list, observer) {
+    for (const entry of list.getEntries())
+      if (STEPS[entry.entryType]) STEPS[entry.entryType](entry);
+  }).observe({entryTypes: self.PerformanceObserver.supportedEntryTypes});
+}
+
+function test_support(def) {
+  if (!types || !types.includes(def[0])) {
+    return;
+  }
+  const desc = `'${def[0]}' entries should be observable`;
+  const t = async_test(desc);
+
+  STEPS[def[0]] = (entry) => {
+    t.step(() => assert_equals(Object.prototype.toString.call(entry),
+    `[object ${def[1]}]`,
+    `Class name of entry should be ${def[1]}.`));
+    t.done();
+  }
+}