1 files changed, 51 insertions, 0 deletions
diff --git a/browser/base/content/test/about/browser_aboutCertError_offlineSupport.js b/browser/base/content/test/about/browser_aboutCertError_offlineSupport.js
new file mode 100644
index 0000000000..5b717a683a
--- /dev/null
+++ b/browser/base/content/test/about/browser_aboutCertError_offlineSupport.js
@@ -0,0 +1,51 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const BAD_CERT_PAGE = "https://expired.example.com";
+const DUMMY_SUPPORT_BASE_PATH = "/1/firefox/fxVersion/OSVersion/language/";
+const DUMMY_SUPPORT_URL = BAD_CERT_PAGE + DUMMY_SUPPORT_BASE_PATH;
+const OFFLINE_SUPPORT_PAGE =
+  "chrome://global/content/neterror/supportpages/time-errors.html";
+
+add_task(async function testOfflineSupportPage() {
+  // Cache the original value of app.support.baseURL pref to reset later
+  let originalBaseURL = Services.prefs.getCharPref("app.support.baseURL");
+
+  Services.prefs.setCharPref("app.support.baseURL", DUMMY_SUPPORT_URL);
+  let errorTab = await openErrorPage(BAD_CERT_PAGE);
+
+  let offlineSupportPromise = BrowserTestUtils.waitForNewTab(
+    gBrowser,
+    DUMMY_SUPPORT_URL + "time-errors"
+  );
+  await SpecialPowers.spawn(
+    errorTab.linkedBrowser,
+    [DUMMY_SUPPORT_URL],
+    async expectedURL => {
+      let doc = content.document;
+
+      let learnMoreLink = doc.getElementById("learnMoreLink");
+      let supportPageURL = learnMoreLink.getAttribute("href");
+      ok(
+        supportPageURL == expectedURL + "time-errors",
+        "Correct support page URL has been set"
+      );
+      await EventUtils.synthesizeMouseAtCenter(learnMoreLink, {}, content);
+    }
+  );
+  let offlineSupportTab = await offlineSupportPromise;
+  await BrowserTestUtils.browserLoaded(
+    gBrowser.selectedBrowser,
+    false,
+    OFFLINE_SUPPORT_PAGE
+  );
+
+  // Reset this pref instead of clearing it to maintain globally set
+  // custom value for testing purposes.
+  Services.prefs.setCharPref("app.support.baseURL", originalBaseURL);
+
+  await BrowserTestUtils.removeTab(offlineSupportTab);
+  await BrowserTestUtils.removeTab(errorTab);
+});