1 files changed, 36 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/html-unsafe-methods/resources/parseHTMLUnsafe-url-tests.js b/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/html-unsafe-methods/resources/parseHTMLUnsafe-url-tests.js
new file mode 100644
index 0000000000..88344d127c
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/html-unsafe-methods/resources/parseHTMLUnsafe-url-tests.js
@@ -0,0 +1,36 @@
+const loadPromise = new Promise(resolve => { window.resolveLoadPromise = resolve; });
+
+function assertURL(doc) {
+  assert_equals(doc.URL, "about:blank", "document.URL");
+  assert_equals(doc.documentURI, "about:blank", "document.documentURI");
+  assert_equals(doc.baseURI, "about:blank", "document.baseURI");
+}
+
+const inputs = {
+  valid: "<html></html>",
+  "invalid XML": `<span x:test="testing">1</span>`
+};
+
+for (const [inputName, input] of Object.entries(inputs)) {
+  test(() => {
+    const doc = Document.parseHTMLUnsafe(input);
+
+    assertURL(doc);
+  }, `${inputName}: created normally`);
+
+  promise_test(async () => {
+    await loadPromise;
+
+    const doc = frames[0].Document.parseHTMLUnsafe(input);
+
+    assertURL(doc);
+  }, `${inputName}: created using another iframe's parseHTMLUnsafe from this frame`);
+
+  promise_test(async () => {
+    await loadPromise;
+
+    const doc = frames[0].doParse(input);
+
+    assertURL(doc);
+  }, `${inputName}: created using another iframe's parseHTMLUnsafe from that frame`);
+}