[compression-dictionary] Check that invalid URLs neither trigger any load/error event nor any fetch request.

fred-wang · chromium-wpt-export-bot · commit db2bdfd804c9 · 2026-07-16T13:17:09.000-07:00
"create a link request" for an invalid URL returns null per https://html.spec.whatwg.org/#create-a-link-request so "load a compression dictionary" should return early per whatwg/html#11620 Bug: 522338661, 40255884 Change-Id: Id2f37d8c578a585200b88574ef1262048b98ded3 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8084469 Reviewed-by: Patrick Meenan <pmeenan@chromium.org> Commit-Queue: Frédéric Wang Nélar <fwang@igalia.com> Cr-Commit-Position: refs/heads/main@{#1663433}
diff --git a/fetch/compression-dictionary/dictionary-fetch-with-link-element-invalid-url.tentative.https.html b/fetch/compression-dictionary/dictionary-fetch-with-link-element-invalid-url.tentative.https.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<meta name="timeout" content="long"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+promise_test(async t => {
+  let fetchedEntries = [];
+  const observer = new PerformanceObserver((list) => {
+    list.getEntries().forEach(entry => {
+      // Ignore favicon.ico and testharness resources.
+      if (!entry.name.match(/testharness|favicon/g)) {
+        fetchedEntries.push(entry.name);
+      }
+    });
+  });
+  observer.observe({ type: "resource", buffered: true});
+  const link = document.createElement('link');
+  t.add_cleanup(_ => {
+    observer.disconnect();
+    link.remove();
+  });
+  link.rel = 'compression-dictionary';
+  link.href = "https://make:invalid/";
+  link.addEventListener("error", t.unreached_func("error event should not be dispatched"));
+  link.addEventListener("load", t.unreached_func("load event should not be dispatched"));
+  document.head.appendChild(link);
+  await new Promise(resolve => t.step_timeout(resolve, 1000));
+  assert_equals(fetchedEntries.length, 0);
+}, 'link with rel=compression-dictionary and invalid href neither trigger any load/error event nor any fetch request.');
+</script>
