1 files changed, 79 insertions, 0 deletions
diff --git a/testing/web-platform/tests/scroll-to-text-fragment/non-html-documents.html b/testing/web-platform/tests/scroll-to-text-fragment/non-html-documents.html
new file mode 100644
index 0000000000..5cec6aee3a
--- /dev/null
+++ b/testing/web-platform/tests/scroll-to-text-fragment/non-html-documents.html
@@ -0,0 +1,79 @@
+<!doctype html>
+<title>Allow text fragments in HTML documents only</title>
+<meta charset=utf-8>
+<link rel="help" href="https://wicg.github.io/ScrollToTextFragment/">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/common/utils.js"></script>
+<script src="stash.js"></script>
+
+<script>
+function rAF(win) {
+  return new Promise((resolve) => {
+    win.requestAnimationFrame(resolve);
+  });
+}
+
+function openPopup(url) {
+  return new Promise((resolve) => {
+    test_driver.bless('Open a URL with a text fragment directive', () => {
+      const popup = window.open(url, '_blank', 'width=300,height=300');
+      popup.onload = () => resolve(popup);
+    });
+  });
+}
+
+const test_cases = [
+  {
+    filename: 'text-html.html',
+    expected: 'allowed',
+  },
+  {
+    filename: 'text-css.css',
+    expected: 'blocked',
+  },
+  {
+    filename: 'text-javascript.js',
+    expected: 'blocked',
+  },
+  {
+    filename: 'application-json.json',
+    expected: 'blocked',
+  },
+  {
+    filename: 'text-plain.txt',
+    expected: 'allowed',
+  },
+  {
+    filename: 'application-xml.xml',
+    expected: 'blocked',
+  },
+];
+
+for (let test_case of test_cases) {
+  const filename = test_case.filename;
+  const expected = test_case.expected;
+  const mediaType = filename.split('.')[0].replace('-', '/');
+
+  promise_test(async function (t) {
+    const popup = await openPopup(`resources/${filename}#:~:text=target`);
+
+    // The WPT server should provide the correct content-type header from the
+    // file extension.
+    assert_equals(popup.document.contentType, mediaType);
+
+    // rAF twice in case there is any asynchronicity in scrolling to the target.
+    await rAF(popup);
+    await rAF(popup);
+
+    const did_scroll = popup.scrollY > 0;
+    const expected_scroll = expected == 'allowed';
+    assert_equals(did_scroll, expected_scroll, 'scrolled to fragment');
+
+    popup.close();
+  }, `Text directive ${expected} in ${mediaType}`);
+}
+
+</script>