1 files changed, 79 insertions, 0 deletions
diff --git a/netwerk/test/browser/browser_cookie_sync_across_tabs.js b/netwerk/test/browser/browser_cookie_sync_across_tabs.js
new file mode 100644
index 0000000000..127bb2555b
--- /dev/null
+++ b/netwerk/test/browser/browser_cookie_sync_across_tabs.js
@@ -0,0 +1,79 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+"use strict";
+
+add_task(async function () {
+  info("Make sure cookie changes in one process are visible in the other");
+
+  const kRoot = getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content/",
+    "https://example.com/"
+  );
+  const kTestPage = kRoot + "dummy.html";
+
+  Services.cookies.removeAll();
+
+  let tab1 = await BrowserTestUtils.openNewForegroundTab({
+    gBrowser,
+    url: kTestPage,
+    forceNewProcess: true,
+  });
+  let tab2 = await BrowserTestUtils.openNewForegroundTab({
+    gBrowser,
+    url: kTestPage,
+    forceNewProcess: true,
+  });
+
+  let browser1 = gBrowser.getBrowserForTab(tab1);
+  let browser2 = gBrowser.getBrowserForTab(tab2);
+
+  let pid1 = browser1.frameLoader.remoteTab.osPid;
+  let pid2 = browser2.frameLoader.remoteTab.osPid;
+
+  // Note, this might not be true once fission is implemented (Bug 1451850)
+  ok(pid1 != pid2, "We should have different processes here.");
+
+  await SpecialPowers.spawn(browser1, [], async function () {
+    is(content.document.cookie, "", "Expecting no cookies");
+  });
+
+  await SpecialPowers.spawn(browser2, [], async function () {
+    is(content.document.cookie, "", "Expecting no cookies");
+  });
+
+  await SpecialPowers.spawn(browser1, [], async function () {
+    content.document.cookie = "a1=test";
+  });
+
+  await SpecialPowers.spawn(browser2, [], async function () {
+    is(content.document.cookie, "a1=test", "Cookie should be set");
+    content.document.cookie = "a1=other_test";
+  });
+
+  await SpecialPowers.spawn(browser1, [], async function () {
+    is(content.document.cookie, "a1=other_test", "Cookie should be set");
+    content.document.cookie = "a2=again";
+  });
+
+  await SpecialPowers.spawn(browser2, [], async function () {
+    is(
+      content.document.cookie,
+      "a1=other_test; a2=again",
+      "Cookie should be set"
+    );
+    content.document.cookie = "a1=; expires=Thu, 01-Jan-1970 00:00:01 GMT;";
+    content.document.cookie = "a2=; expires=Thu, 01-Jan-1970 00:00:01 GMT;";
+  });
+
+  await SpecialPowers.spawn(browser1, [], async function () {
+    is(content.document.cookie, "", "Cookies should be cleared");
+  });
+
+  BrowserTestUtils.removeTab(tab1);
+  BrowserTestUtils.removeTab(tab2);
+
+  ok(true, "Got to the end of the test!");
+});