1 files changed, 19 insertions, 0 deletions
diff --git a/browser/base/content/test/about/browser_aboutSupport_newtab_security_state.js b/browser/base/content/test/about/browser_aboutSupport_newtab_security_state.js
new file mode 100644
index 0000000000..caa45a1af5
--- /dev/null
+++ b/browser/base/content/test/about/browser_aboutSupport_newtab_security_state.js
@@ -0,0 +1,19 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(async function checkIdentityOfAboutSupport() {
+  let tab = gBrowser.addTab("about:support", {
+    referrerURI: null,
+    inBackground: false,
+    allowThirdPartyFixup: false,
+    relatedToCurrent: false,
+    skipAnimation: true,
+    allowMixedContent: false,
+    triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
+  });
+
+  await promiseTabLoaded(tab);
+  let identityBox = document.getElementById("identity-box");
+  is(identityBox.className, "chromeUI", "Should know that we're chrome.");
+  gBrowser.removeTab(tab);
+});