Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 36 insertions, 0 deletions

diff --git a/testing/web-platform/tests/longtask-timing/idlharness.window.js b/testing/web-platform/tests/longtask-timing/idlharness.window.js
new file mode 100644
index 0000000000..fd9a3f042f
--- /dev/null
+++ b/testing/web-platform/tests/longtask-timing/idlharness.window.js
@@ -0,0 +1,36 @@
+// META: script=/resources/WebIDLParser.js
+// META: script=/resources/idlharness.js
+
+// https://w3c.github.io/longtasks/
+
+'use strict';
+
+idl_test(
+  ['longtasks'],
+  ['performance-timeline', 'hr-time'],
+  (idl_array, t) => new Promise((resolve, reject) => {
+
+
+    const longTask = () => {
+      const begin = self.performance.now();
+      while (self.performance.now() < begin + 100);
+    }
+    t.step_timeout(longTask, 0);
+
+    const observer = new PerformanceObserver(entryList => {
+      const entries = Array.from(entryList.getEntries());
+      const attribution = entries.reduce(
+          (sum, e) => sum.concat(e.attribution || []), []);
+      idl_array.add_objects({
+        PerformanceLongTaskTiming: entries,
+        TaskAttributionTiming: attribution,
+      });
+      resolve();
+    });
+    observer.observe({entryTypes: ['longtask']});
+
+    t.step_timeout(() => {
+      reject('longtask entry was not observed');
+    }, 1000);
+  })
+);