Test that javascript: URL-created documents carry over referrer
Follows https://github.com/whatwg/html/pull/6315.
diff --git a/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-referrer.window.js b/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-referrer.window.js
new file mode 100644
index 0000000..1f11429
--- /dev/null
+++ b/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-referrer.window.js
@@ -0,0 +1,38 @@
+// META: script=../resources/helpers.js
+// META: title=javascript: URL navigation to a string must create a document whose referrer is the navigation initiator
+
+const originalURL = location.href;
+
+const testCases = [
+ ["unsafe-url", location.href],
+ ["origin", self.origin + "/"],
+ ["no-referrer", ""]
+];
+
+for (const [referrerPolicyForStartingWindowCreation, expectedReferrer] of testCases) {
+ promise_test(async (t) => {
+ const meta = document.createElement("meta");
+ meta.name = "referrer";
+ meta.content = referrerPolicyForStartingWindowCreation;
+ t.add_cleanup(() => meta.remove());
+ document.head.append(meta);
+
+ const w = await openWindow("/common/blank.html", t);
+ const originalReferrer = w.document.referrer;
+ assert_equals(originalReferrer, expectedReferrer,
+ "Sanity check: opened window's referrer is set correctly");
+
+ // Mess with the current document's URL so that the initiator URL is different. Then, if that
+ // shows up as the javascript: URL document's referrer, we know the navigation initiator's URL is
+ // being used as the referrer, which is incorrect.
+ history.replaceState(undefined, "", "/incorrect-referrer.html");
+ t.add_cleanup(() => history.replaceState(undefined, "", originalURL));
+
+ w.location.href = `javascript:'a string<script>opener.postMessage(document.referrer, "*");</script>'`;
+
+ const referrer = await waitForMessage(w);
+
+ assert_equals(referrer, originalReferrer,
+ "javascript: URL-created document's referrer equals the previous document's referrer");
+ }, `${referrerPolicyForStartingWindowCreation} referrer policy used to create the starting page`);
+}
