1 files changed, 111 insertions, 0 deletions
diff --git a/browser/components/tests/unit/test_browserGlue_migration_ctrltab_recently_used_order.js b/browser/components/tests/unit/test_browserGlue_migration_ctrltab_recently_used_order.js
new file mode 100644
index 0000000000..119d32996b
--- /dev/null
+++ b/browser/components/tests/unit/test_browserGlue_migration_ctrltab_recently_used_order.js
@@ -0,0 +1,111 @@
+/* Any copyright is dedicated to the Public Domain.
+http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TOPIC_BROWSERGLUE_TEST = "browser-glue-test";
+const TOPICDATA_BROWSERGLUE_TEST = "force-ui-migration";
+const RECENTLY_USED_ORDER_DEFAULT = false;
+const UI_VERSION = 107;
+
+const gBrowserGlue = Cc["@mozilla.org/browser/browserglue;1"].getService(
+  Ci.nsIObserver
+);
+
+add_task(async function has_not_used_ctrl_tab_and_its_off() {
+  Services.prefs.setIntPref("browser.migration.version", UI_VERSION);
+  Services.prefs.setBoolPref("browser.engagement.ctrlTab.has-used", false);
+  Services.prefs.setBoolPref("browser.ctrlTab.recentlyUsedOrder", false);
+
+  // Simulate a migration.
+  gBrowserGlue.observe(
+    null,
+    TOPIC_BROWSERGLUE_TEST,
+    TOPICDATA_BROWSERGLUE_TEST
+  );
+
+  Assert.equal(
+    RECENTLY_USED_ORDER_DEFAULT,
+    Services.prefs.getBoolPref("browser.ctrlTab.sortByRecentlyUsed")
+  );
+});
+
+add_task(async function has_not_used_ctrl_tab_and_its_on() {
+  Services.prefs.setIntPref("browser.migration.version", UI_VERSION);
+  Services.prefs.setBoolPref("browser.engagement.ctrlTab.has-used", false);
+  Services.prefs.setBoolPref("browser.ctrlTab.recentlyUsedOrder", true);
+
+  // Simulate a migration.
+  gBrowserGlue.observe(
+    null,
+    TOPIC_BROWSERGLUE_TEST,
+    TOPICDATA_BROWSERGLUE_TEST
+  );
+
+  Assert.equal(
+    RECENTLY_USED_ORDER_DEFAULT,
+    Services.prefs.getBoolPref("browser.ctrlTab.sortByRecentlyUsed")
+  );
+});
+
+add_task(async function has_used_ctrl_tab_and_its_off() {
+  Services.prefs.setIntPref("browser.migration.version", UI_VERSION);
+  Services.prefs.setBoolPref("browser.engagement.ctrlTab.has-used", true);
+  Services.prefs.setBoolPref("browser.ctrlTab.recentlyUsedOrder", false);
+
+  // Simulate a migration.
+  gBrowserGlue.observe(
+    null,
+    TOPIC_BROWSERGLUE_TEST,
+    TOPICDATA_BROWSERGLUE_TEST
+  );
+
+  Assert.equal(
+    false,
+    Services.prefs.getBoolPref("browser.ctrlTab.sortByRecentlyUsed")
+  );
+});
+
+add_task(async function has_used_ctrl_tab_and_its_on() {
+  Services.prefs.setIntPref("browser.migration.version", UI_VERSION);
+  Services.prefs.setBoolPref("browser.engagement.ctrlTab.has-used", true);
+  Services.prefs.setBoolPref("browser.ctrlTab.recentlyUsedOrder", true);
+
+  // Simulate a migration.
+  gBrowserGlue.observe(
+    null,
+    TOPIC_BROWSERGLUE_TEST,
+    TOPICDATA_BROWSERGLUE_TEST
+  );
+
+  Assert.equal(
+    true,
+    Services.prefs.getBoolPref("browser.ctrlTab.sortByRecentlyUsed")
+  );
+});
+
+add_task(async function has_used_ctrl_tab_and_its_default() {
+  Services.prefs.setIntPref("browser.migration.version", UI_VERSION);
+  Services.prefs.setBoolPref("browser.engagement.ctrlTab.has-used", true);
+  Services.prefs.clearUserPref("browser.ctrlTab.recentlyUsedOrder");
+
+  // Simulate a migration.
+  gBrowserGlue.observe(
+    null,
+    TOPIC_BROWSERGLUE_TEST,
+    TOPICDATA_BROWSERGLUE_TEST
+  );
+
+  // Default had been true
+  Assert.equal(
+    true,
+    Services.prefs.getBoolPref("browser.ctrlTab.sortByRecentlyUsed")
+  );
+});
+
+registerCleanupFunction(() => {
+  Services.prefs.clearUserPref("browser.migration.version");
+  Services.prefs.clearUserPref("browser.engagement.ctrlTab.has-used");
+  Services.prefs.clearUserPref("browser.ctrlTab.recentlyUsedOrder");
+  Services.prefs.clearUserPref("browser.ctrlTab.sortByRecentlyUsed");
+});