1 files changed, 50 insertions, 0 deletions
diff --git a/toolkit/components/reader/test/browser_readerMode_samesite_cookie_redirect.js b/toolkit/components/reader/test/browser_readerMode_samesite_cookie_redirect.js
new file mode 100644
index 0000000000..caa152360c
--- /dev/null
+++ b/toolkit/components/reader/test/browser_readerMode_samesite_cookie_redirect.js
@@ -0,0 +1,50 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_ORIGIN = getRootDirectory(gTestPath).replace(
+  "chrome://mochitests/content",
+  "http://example.com"
+);
+
+const { HttpServer } = ChromeUtils.import("resource://testing-common/httpd.js");
+
+add_task(async function test_ss_cookie_redirect() {
+  // Set the samesite cookie
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    TEST_ORIGIN + "setSameSiteCookie.html"
+  );
+  BrowserTestUtils.removeTab(tab);
+
+  let server = new HttpServer();
+  server.start(-1);
+  server.registerPathHandler("/foo", (request, response) => {
+    response.setStatusLine(request.httpVersion, 302, "Found");
+    response.setHeader("Location", TEST_ORIGIN + "getCookies.sjs");
+  });
+  registerCleanupFunction(() => server.stop());
+  const { primaryPort, primaryHost } = server.identity;
+  const serverURL = `http://${primaryHost}:${primaryPort}/foo`;
+
+  // Now open `getCookies.sjs` but via a redirect:
+  await BrowserTestUtils.withNewTab("about:blank", async browser => {
+    let loaded = BrowserTestUtils.waitForContentEvent(
+      browser,
+      "AboutReaderContentReady"
+    );
+    await BrowserTestUtils.loadURIString(
+      browser,
+      "about:reader?url=" + encodeURIComponent(serverURL)
+    );
+    await loaded;
+    await SpecialPowers.spawn(browser, [], () => {
+      is(
+        content.document.getElementById("cookieSpan").textContent,
+        "",
+        "Shouldn't get cookies."
+      );
+    });
+  });
+});