1 files changed, 131 insertions, 0 deletions
diff --git a/netwerk/test/browser/browser_103_assets.js b/netwerk/test/browser/browser_103_assets.js
new file mode 100644
index 0000000000..c272b5c0e5
--- /dev/null
+++ b/netwerk/test/browser/browser_103_assets.js
@@ -0,0 +1,131 @@
+/* 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/. */
+
+Services.prefs.setBoolPref("network.early-hints.enabled", true);
+
+const { request_count_checking } = ChromeUtils.import(
+  "resource://testing-common/early_hint_preload_test_helper.jsm"
+);
+
+// - testName is just there to be printed during Asserts when failing
+// - asset is the asset type, see early_hint_asset_html.sjs for possible values
+//   for the asset type fetch see test_hint_fetch due to timing issues
+// - hinted: when true, the server reponds with "103 Early Hints"-header
+async function test_hint_asset(testName, asset, hinted) {
+  // reset the count
+  let headers = new Headers();
+  headers.append("X-Early-Hint-Count-Start", "");
+  await fetch(
+    "http://example.com/browser/netwerk/test/browser/early_hint_pixel_count.sjs",
+    { headers }
+  );
+
+  let requestUrl = `https://example.com/browser/netwerk/test/browser/early_hint_asset_html.sjs?as=${asset}&hinted=${
+    hinted ? "1" : "0"
+  }`;
+
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: requestUrl,
+      waitForLoad: true,
+    },
+    async function() {}
+  );
+
+  let gotRequestCount = await fetch(
+    "http://example.com/browser/netwerk/test/browser/early_hint_pixel_count.sjs"
+  ).then(response => response.json());
+
+  await request_count_checking(
+    `${testName} (${asset})`,
+    gotRequestCount,
+    hinted ? { hinted: 1, normal: 0 } : { hinted: 0, normal: 1 }
+  );
+}
+
+// preload image
+add_task(async function test_103_asset_image() {
+  await test_hint_asset("test_103_asset_normal", "image", false);
+  await test_hint_asset("test_103_asset_hinted", "image", true);
+});
+
+// preload css
+add_task(async function test_103_asset_style() {
+  await test_hint_asset("test_103_asset_normal", "style", false);
+  await test_hint_asset("test_103_asset_hinted", "style", true);
+});
+
+// preload javascript
+add_task(async function test_103_asset_javascript() {
+  await test_hint_asset("test_103_asset_normal", "script", false);
+  await test_hint_asset("test_103_asset_hinted", "script", true);
+});
+
+// preload javascript module
+/* TODO(Bug 1798319): enable this test case
+add_task(async function test_103_asset_module() {
+  await test_hint_asset("test_103_asset_normal", "module", false);
+  await test_hint_asset("test_103_asset_hinted", "module", true);
+});
+*/
+
+// preload font
+add_task(async function test_103_asset_font() {
+  await test_hint_asset("test_103_asset_normal", "font", false);
+  await test_hint_asset("test_103_asset_hinted", "font", true);
+});
+
+// - testName is just there to be printed during Asserts when failing
+// - asset is the asset type, see early_hint_asset_html.sjs for possible values
+// - hinted: when true, the server reponds with "103 Early Hints"-header
+async function test_hint_fetch(testName, hinted) {
+  // reset the count
+  let headers = new Headers();
+  headers.append("X-Early-Hint-Count-Start", "");
+  await fetch(
+    "http://example.com/browser/netwerk/test/browser/early_hint_pixel_count.sjs",
+    { headers }
+  );
+
+  let requestUrl = `https://example.com/browser/netwerk/test/browser/early_hint_asset_html.sjs?as=fetch&hinted=${
+    hinted ? "1" : "0"
+  }`;
+
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: requestUrl,
+      waitForLoad: true,
+    },
+    async function(browser) {
+      // wait until the fetch is complete
+      await TestUtils.waitForCondition(_ => {
+        return SpecialPowers.spawn(browser, [], _ => {
+          return (
+            content.document.getElementsByTagName("h2")[0] != undefined &&
+            content.document.getElementsByTagName("h2")[0].textContent !==
+              "Fetching..." // default text set by early_hint_asset_html.sjs
+          );
+        });
+      });
+    }
+  );
+
+  let gotRequestCount = await fetch(
+    "http://example.com/browser/netwerk/test/browser/early_hint_pixel_count.sjs"
+  ).then(response => response.json());
+
+  await request_count_checking(
+    `${testName} (fetch)`,
+    gotRequestCount,
+    hinted ? { hinted: 1, normal: 0 } : { hinted: 0, normal: 1 }
+  );
+}
+
+// preload fetch
+add_task(async function test_103_asset_fetch() {
+  await test_hint_fetch("test_103_asset_normal", false);
+  await test_hint_fetch("test_103_asset_hinted", true);
+});