1 files changed, 64 insertions, 0 deletions
diff --git a/dom/security/test/https-only/browser_background_redirect.js b/dom/security/test/https-only/browser_background_redirect.js
new file mode 100644
index 0000000000..2907278943
--- /dev/null
+++ b/dom/security/test/https-only/browser_background_redirect.js
@@ -0,0 +1,64 @@
+"use strict";
+/* Description of the test:
+ * We load a page which gets upgraded to https. HTTPS-Only Mode then
+ * sends an 'http' background request which we redirect (using the
+ * web extension API) to 'same-origin' https. We ensure the HTTPS-Only
+ * Error page does not occur, but we https page gets loaded.
+ */
+
+let extension = null;
+
+add_task(async function test_https_only_background_request_redirect() {
+  // A longer timeout is necessary for this test since we have to wait
+  // at least 3 seconds for the https-only background request to happen.
+  requestLongerTimeout(10);
+
+  await SpecialPowers.pushPrefEnv({
+    set: [["dom.security.https_only_mode", true]],
+  });
+
+  extension = ExtensionTestUtils.loadExtension({
+    manifest: {
+      permissions: ["webRequest", "webRequestBlocking", "http://example.com/*"],
+    },
+    background() {
+      let { browser } = this;
+      browser.webRequest.onBeforeRequest.addListener(
+        details => {
+          if (details.url === "http://example.com/") {
+            browser.test.sendMessage("redir-handled");
+            let redirectUrl = "https://example.com/";
+            return { redirectUrl };
+          }
+          return undefined;
+        },
+        { urls: ["http://example.com/*"] },
+        ["blocking"]
+      );
+    },
+  });
+
+  await extension.startup();
+
+  await BrowserTestUtils.withNewTab("about:blank", async function (browser) {
+    let loaded = BrowserTestUtils.browserLoaded(browser, false, null, true);
+    BrowserTestUtils.startLoadingURIString(
+      browser,
+      "http://example.com/browser/dom/security/test/https-only/file_background_redirect.sjs?start"
+    );
+
+    await extension.awaitMessage("redir-handled");
+
+    await loaded;
+
+    await SpecialPowers.spawn(browser, [], async function () {
+      let innerHTML = content.document.body.innerHTML;
+      ok(
+        innerHTML.includes("Test Page for Bug 1683015 loaded"),
+        "No https-only error page"
+      );
+    });
+  });
+
+  await extension.unload();
+});