1 files changed, 97 insertions, 0 deletions
diff --git a/browser/components/newtab/test/browser/abouthomecache/browser_disabled.js b/browser/components/newtab/test/browser/abouthomecache/browser_disabled.js
new file mode 100644
index 0000000000..faa79b219c
--- /dev/null
+++ b/browser/components/newtab/test/browser/abouthomecache/browser_disabled.js
@@ -0,0 +1,97 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * This file tests scenarios where the cache is disabled due to user
+ * configuration.
+ */
+
+registerCleanupFunction(async () => {
+  // When the test completes, make sure we cleanup with a populated cache,
+  // since this is the default starting state for these tests.
+  await withFullyLoadedAboutHome(async browser => {
+    await simulateRestart(browser);
+  });
+});
+
+/**
+ * Tests the case where the cache is disabled via the pref.
+ */
+add_task(async function test_cache_disabled() {
+  await withFullyLoadedAboutHome(async browser => {
+    await SpecialPowers.pushPrefEnv({
+      set: [["browser.startup.homepage.abouthome_cache.enabled", false]],
+    });
+
+    await simulateRestart(browser);
+
+    await ensureDynamicAboutHome(
+      browser,
+      AboutHomeStartupCache.CACHE_RESULT_SCALARS.DISABLED
+    );
+
+    await SpecialPowers.popPrefEnv();
+  });
+});
+
+/**
+ * Tests the case where the cache is disabled because the home page is
+ * not set at about:home.
+ */
+add_task(async function test_cache_custom_homepage() {
+  await withFullyLoadedAboutHome(async browser => {
+    await HomePage.set("https://example.com");
+    await simulateRestart(browser);
+
+    await ensureDynamicAboutHome(
+      browser,
+      AboutHomeStartupCache.CACHE_RESULT_SCALARS.NOT_LOADING_ABOUTHOME
+    );
+
+    HomePage.reset();
+  });
+});
+
+/**
+ * Tests the case where the cache is disabled because the session is
+ * configured to automatically be restored.
+ */
+add_task(async function test_cache_restore_session() {
+  await withFullyLoadedAboutHome(async browser => {
+    await SpecialPowers.pushPrefEnv({
+      set: [["browser.startup.page", 3]],
+    });
+
+    await simulateRestart(browser);
+
+    await ensureDynamicAboutHome(
+      browser,
+      AboutHomeStartupCache.CACHE_RESULT_SCALARS.NOT_LOADING_ABOUTHOME
+    );
+
+    await SpecialPowers.popPrefEnv();
+  });
+});
+
+/**
+ * Tests the case where the cache is disabled because about:newtab
+ * preloading is disabled.
+ */
+add_task(async function test_cache_no_preloading() {
+  await withFullyLoadedAboutHome(async browser => {
+    await SpecialPowers.pushPrefEnv({
+      set: [["browser.newtab.preload", false]],
+    });
+
+    await simulateRestart(browser);
+
+    await ensureDynamicAboutHome(
+      browser,
+      AboutHomeStartupCache.CACHE_RESULT_SCALARS.PRELOADING_DISABLED
+    );
+
+    await SpecialPowers.popPrefEnv();
+  });
+});