Bug 1473247 - Part 2: Add a test case for making sure that IP addresses can work properly for the firstPartyDomain. r=arthuredelstein,baku

Differential Revision: https://phabricator.services.mozilla.com/D1978

--HG--
extra : moz-landing-system : lando

browser/components/originattributes/test/browser/browser_firstPartyIsolation.js

@@ -278,3 +278,22 @@ add_task(async function window_open_form_test() {
   gBrowser.removeTab(tab);
   await BrowserTestUtils.closeWindow(win);
 });
+
+/**
+ * A test for using an IP address as the first party domain.
+ */
+add_task(async function ip_address_test() {
+  const ipAddr = "127.0.0.1";
+  const ipHost = `http://${ipAddr}/browser/browser/components/originattributes/test/browser/`;
+
+  let tab = BrowserTestUtils.addTab(gBrowser, ipHost + "test_firstParty.html");
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser, true);
+
+  await ContentTask.spawn(tab.linkedBrowser, { firstPartyDomain: ipAddr }, async function(attrs) {
+    info("document principal: " + content.document.nodePrincipal.origin);
+    Assert.equal(content.document.nodePrincipal.originAttributes.firstPartyDomain,
+                   attrs.firstPartyDomain, "The firstPartyDomain should be set properly for the IP address");
+  });
+
+  gBrowser.removeTab(tab);
+});