XHR ResourceTiming entry creation (#31027)

* XHR ResourceTiming entry creation Test that: - A ResourceTiming entry is created for an XmlHttpRequest - The entry is available during load event handling - The entry's responseEnd time is not after the load event time - Entries are created for network errors (e.g. CORS fail, wrong scheme) See whatwg/xhr#319 * lint * Move xhr internals to resource-loaders
web-platform-tests · Oct 4, 2021 · 167763f · 167763f
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diff --git a/resource-timing/resources/resource-loaders.js b/resource-timing/resources/resource-loaders.js
@@ -120,5 +120,14 @@ const load = {
       }
     }
     xhr.send();
+  },
+
+  xhr_async: path => {
+    const xhr = new XMLHttpRequest();
+    xhr.open("GET", path)
+    xhr.send();
+    return new Promise(resolve => {
+      xhr.onload = xhr.onerror = resolve;
+    });
   }
 };
diff --git a/resource-timing/xhr-resource-timing.html b/resource-timing/xhr-resource-timing.html
@@ -0,0 +1,29 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+<meta charset="utf-8" />
+<title>This test validates that a failed cross-origin fetch creates an opaque network timing entry.
+</title>
+<link rel="author" title="Noam Rosenthal" href="noam@webkit.org">
+<link rel="help" href="https://www.w3.org/TR/resource-timing-2/#sec-performanceresourcetiming"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/resource-loaders.js"></script>
+<script src="resources/entry-invariants.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+</head>
+<body>
+<script>
+const {REMOTE_ORIGIN} = get_host_info();
+
+attribute_test(
+  load.xhr_async, "/common/dummy.xml",
+  invariants.assert_tao_pass_no_redirect_http,
+  "Verify resource timing entry creation for successful XHR");
+
+attribute_test(
+  load.xhr_async, `${REMOTE_ORIGIN}/common/dummy.xml`,
+  invariants.assert_tao_failure_resource,
+    "Verify resource timing entry creation for XHR failing with CORS");
+</script>
+</body>