1 files changed, 72 insertions, 0 deletions
diff --git a/testing/web-platform/tests/domparsing/resources/domparser-url-tests.js b/testing/web-platform/tests/domparsing/resources/domparser-url-tests.js
new file mode 100644
index 0000000000..7b02fab1c3
--- /dev/null
+++ b/testing/web-platform/tests/domparsing/resources/domparser-url-tests.js
@@ -0,0 +1,72 @@
+const loadPromise = new Promise(resolve => { window.resolveLoadPromise = resolve; });
+
+function assertURL(doc, expectedURL) {
+  assert_equals(doc.URL, expectedURL, "document.URL");
+  assert_equals(doc.documentURI, expectedURL, "document.documentURI");
+  assert_equals(doc.baseURI, expectedURL, "document.baseURI");
+}
+
+const supportedTypes = [
+  "text/html",
+  "text/xml",
+  "application/xml",
+  "application/xhtml+xml",
+  "image/svg+xml",
+];
+
+const invalidXML = `<span x:test="testing">1</span>`;
+const inputs = {
+  valid: "<html></html>",
+  "invalid XML": invalidXML
+};
+
+for (const mimeType of supportedTypes) {
+  for (const [inputName, input] of Object.entries(inputs)) {
+    if (mimeType === "text/html" && input === invalidXML) {
+      continue;
+    }
+
+    test(() => {
+      const parser = new DOMParser();
+      const doc = parser.parseFromString(input, mimeType);
+
+      assertURL(doc, document.URL);
+    }, `${mimeType} ${inputName}: created normally`);
+
+    promise_test(async () => {
+      await loadPromise;
+
+      const parser = new frames[0].DOMParser();
+      const doc = parser.parseFromString(input, mimeType);
+
+      assertURL(doc, frames[0].document.URL);
+    }, `${mimeType} ${inputName}: created using another iframe's DOMParser from this frame`);
+
+    promise_test(async () => {
+      await loadPromise;
+
+      const parser = new frames[0].DOMParser();
+      const doc = frames[0].doParse(input, mimeType);
+
+      assertURL(doc, frames[0].document.URL);
+    }, `${mimeType} ${inputName}: created using another iframe's DOMParser from that frame`);
+
+    promise_test(async () => {
+      await loadPromise;
+
+      const parser = new DOMParser();
+      const doc = frames[0].DOMParser.prototype.parseFromString.call(parser, input, mimeType);
+
+      assertURL(doc, document.URL);
+    }, `${mimeType} ${inputName}: created using a parser from this frame and the method from the iframe`);
+
+    promise_test(async () => {
+      await loadPromise;
+
+      const parser = new frames[0].DOMParser();
+      const doc = DOMParser.prototype.parseFromString.call(parser, input, mimeType);
+
+      assertURL(doc, frames[0].document.URL);
+    }, `${mimeType} ${inputName}: created using a parser from the iframe and the method from this frame`);
+  }
+}