[iframe] Add tests for requestResize() throws

kojiishi · mertcanaltin · commit 88d272cf0a7c · 2025-10-26T19:52:05.000+03:00
This patch adds tests for `requestResize()`, which was added in <crrev.com/c/7040609>, throws the DOM `NotAllowedError` when the operation is not allowed. Bug: 418397278 Change-Id: I2b0d2390f39235928c345d6f5af2f7bf10be8f64 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7048160 Commit-Queue: Kent Tamura <tkent@chromium.org> Auto-Submit: Koji Ishii <kojii@chromium.org> Reviewed-by: Kent Tamura <tkent@chromium.org> Cr-Commit-Position: refs/heads/main@{#1531201}
diff --git a/css/css-sizing/responsive-iframe/resources/iframe-contents-request-resize-error.html b/css/css-sizing/responsive-iframe/resources/iframe-contents-request-resize-error.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<script>
+try {
+  window.requestResize();
+} catch (e) {
+  window.parent.postMessage({
+    name: e.name,
+    message: e.message,
+  }, '*');
+}
+</script>
diff --git a/css/css-sizing/responsive-iframe/responsive-iframe-request-resize-error.tentative.html b/css/css-sizing/responsive-iframe/responsive-iframe-request-resize-error.tentative.html
@@ -0,0 +1,22 @@
+<!doctype HTML>
+<title>Test that calling `window.requestResize()` throws DOM NotAllowedError.</title>
+<link rel="author" href="mailto:kojii@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-sizing/">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<script>
+test(t => {
+  assert_throws_dom('NotAllowedError', () => window.requestResize());
+}, "`window.requestResize()` from the parent frame throws DOM NotAllowedError");
+
+async_test(t => {
+  window.addEventListener('message', t.step_func_done(e => {
+    assert_equals(e.data.name, 'NotAllowedError');
+  }, {once: true}));
+  const iframe = document.createElement('iframe');
+  iframe.src = 'resources/iframe-contents-request-resize-error.html';
+  document.body.appendChild(iframe);
+}, "`window.requestResize()` from iframe without `responsive-embedded-sizing` meta tag throws DOM NotAllowedError");
+</script>
+</body>
