1 files changed, 39 insertions, 0 deletions
diff --git a/testing/web-platform/tests/user-timing/mark-l3.any.js b/testing/web-platform/tests/user-timing/mark-l3.any.js
new file mode 100644
index 0000000000..407a5c8bba
--- /dev/null
+++ b/testing/web-platform/tests/user-timing/mark-l3.any.js
@@ -0,0 +1,39 @@
+// META: script=resources/user-timing-helper.js
+
+async_test(function (t) {
+    let mark_entries = [];
+    const expected_entries =
+        [{ entryType: "mark", name: "mark1", detail: null},
+        { entryType: "mark", name: "mark2", detail: null},
+        { entryType: "mark", name: "mark3", detail: null},
+        { entryType: "mark", name: "mark4", detail: null},
+        { entryType: "mark", name: "mark5", detail: null},
+        { entryType: "mark", name: "mark6", detail: {}},
+        { entryType: "mark", name: "mark7", detail: {info: 'abc'}},
+        { entryType: "mark", name: "mark8", detail: null, startTime: 234.56},
+        { entryType: "mark", name: "mark9", detail: {count: 3}, startTime: 345.67}];
+    const observer = new PerformanceObserver(
+        t.step_func(function (entryList, obs) {
+          mark_entries =
+            mark_entries.concat(entryList.getEntries());
+          if (mark_entries.length >= expected_entries.length) {
+            checkEntries(mark_entries, expected_entries);
+            observer.disconnect();
+            t.done();
+          }
+        })
+      );
+    self.performance.clearMarks();
+    observer.observe({entryTypes: ["mark"]});
+    const returned_entries = [];
+    returned_entries.push(self.performance.mark("mark1"));
+    returned_entries.push(self.performance.mark("mark2", undefined));
+    returned_entries.push(self.performance.mark("mark3", null));
+    returned_entries.push(self.performance.mark("mark4", {}));
+    returned_entries.push(self.performance.mark("mark5", {detail: null}));
+    returned_entries.push(self.performance.mark("mark6", {detail: {}}));
+    returned_entries.push(self.performance.mark("mark7", {detail: {info: 'abc'}}));
+    returned_entries.push(self.performance.mark("mark8", {startTime: 234.56}));
+    returned_entries.push(self.performance.mark("mark9", {detail: {count: 3}, startTime: 345.67}));
+    checkEntries(returned_entries, expected_entries);
+}, "mark entries' detail and startTime are customizable.");