1 files changed, 70 insertions, 0 deletions
diff --git a/netwerk/test/browser/browser_103_private_window.js b/netwerk/test/browser/browser_103_private_window.js
new file mode 100644
index 0000000000..2d6daf9501
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+++ b/netwerk/test/browser/browser_103_private_window.js
@@ -0,0 +1,70 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+Services.prefs.setBoolPref("network.early-hints.enabled", true);
+
+registerCleanupFunction(function () {
+  Services.prefs.clearUserPref("network.early-hints.enabled");
+});
+
+// Test steps:
+// 1. Load early_hint_asset_html.sjs with a provided uuid.
+// 2. In early_hint_asset_html.sjs, a 103 response with
+//    a Link header<early_hint_asset.sjs> and the provided uuid is returned.
+// 3. We use "http-on-opening-request" topic to observe whether the
+//    early hinted request is created.
+// 4. Finally, we check if the request has the correct `isPrivate` value.
+async function test_early_hints_load_url(usePrivateWin) {
+  let headers = new Headers();
+  headers.append("X-Early-Hint-Count-Start", "");
+  await fetch(
+    "https://example.com/browser/netwerk/test/browser/early_hint_pixel_count.sjs",
+    { headers }
+  );
+
+  // Open a browsing window.
+  const win = await BrowserTestUtils.openNewBrowserWindow({
+    private: usePrivateWin,
+  });
+
+  let id = Services.uuid.generateUUID().toString();
+  let expectedUrl = `https://example.com/browser/netwerk/test/browser/early_hint_asset.sjs?as=fetch&uuid=${id}`;
+  let observed = {};
+  let observer = {
+    QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
+    observe(aSubject, aTopic, aData) {
+      if (aTopic == "http-on-opening-request") {
+        let channel = aSubject.QueryInterface(Ci.nsIHttpChannel);
+        if (channel.URI.spec === expectedUrl) {
+          observed.actrualUrl = channel.URI.spec;
+          let isPrivate = channel.QueryInterface(
+            Ci.nsIPrivateBrowsingChannel
+          ).isChannelPrivate;
+          observed.isPrivate = isPrivate;
+          Services.obs.removeObserver(observer, "http-on-opening-request");
+        }
+      }
+    },
+  };
+  Services.obs.addObserver(observer, "http-on-opening-request");
+
+  let requestUrl = `https://example.com/browser/netwerk/test/browser/early_hint_asset_html.sjs?as=fetch&hinted=1&uuid=${id}`;
+
+  const browser = win.gBrowser.selectedTab.linkedBrowser;
+  let loaded = BrowserTestUtils.browserLoaded(browser, false, requestUrl);
+  BrowserTestUtils.loadURIString(browser, requestUrl);
+  await loaded;
+
+  Assert.equal(observed.actrualUrl, expectedUrl);
+  Assert.equal(observed.isPrivate, usePrivateWin);
+
+  await BrowserTestUtils.closeWindow(win);
+}
+
+add_task(async function test_103_private_window() {
+  await test_early_hints_load_url(true);
+  await test_early_hints_load_url(false);
+});