CrOS Settings: Small refactor of accounts menu item tests

Extracts a helper function to query the Accounts menu item, in effort
to reduce code duplication.

Bug: b:295060340
Test: browser_tests --gtest_filter="OSSettingsOsSettingsMenu*"
Change-Id: I236214b315eda37a66a6feb85636b68746007a05
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4950297
Auto-Submit: Wes Okuhara <wesokuhara@google.com>
Commit-Queue: Connie Xu <conniekxu@chromium.org>
Reviewed-by: Connie Xu <conniekxu@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1211294}

chrome/test/data/webui/settings/chromeos/os_settings_menu/os_settings_menu_revamp_test.ts

@@ -187,6 +187,13 @@ suite('<os-settings-menu>', () => {
       },
     ];
 
+    function getAccountsMenuItem(): OsSettingsMenuItemElement {
+      const accountsMenuItem =
+          queryMenuItemByPath(`/${routesMojom.PEOPLE_SECTION_PATH}`);
+      assertTrue(!!accountsMenuItem);
+      return accountsMenuItem;
+    }
+
     suite('When there is only one account', () => {
       setup(() => {
         browserProxy.setAccountsForTesting(fakeAccounts.slice(0, 1));
@@ -195,18 +202,14 @@ suite('<os-settings-menu>', () => {
       test('Description should show account email', async () => {
         await createMenu();
 
-        const accountsMenuItem =
-            queryMenuItemByPath(`/${routesMojom.PEOPLE_SECTION_PATH}`);
-        assertTrue(!!accountsMenuItem);
+        const accountsMenuItem = getAccountsMenuItem();
         assertEquals(fakeAccounts[0]!.email, accountsMenuItem.sublabel);
       });
 
       test('Description should update when an account is added', async () => {
         await createMenu();
 
-        const accountsMenuItem =
-            queryMenuItemByPath(`/${routesMojom.PEOPLE_SECTION_PATH}`);
-        assertTrue(!!accountsMenuItem);
+        const accountsMenuItem = getAccountsMenuItem();
         assertEquals(fakeAccounts[0]!.email, accountsMenuItem.sublabel);
 
         // Update accounts to have 2 accounts
@@ -226,18 +229,14 @@ suite('<os-settings-menu>', () => {
       test('Description should show number of accounts', async () => {
         await createMenu();
 
-        const accountsMenuItem =
-            queryMenuItemByPath(`/${routesMojom.PEOPLE_SECTION_PATH}`);
-        assertTrue(!!accountsMenuItem);
+        const accountsMenuItem = getAccountsMenuItem();
         assertEquals('2 accounts', accountsMenuItem.sublabel);
       });
 
       test('Description should update when an account is removed', async () => {
         await createMenu();
 
-        const accountsMenuItem =
-            queryMenuItemByPath(`/${routesMojom.PEOPLE_SECTION_PATH}`);
-        assertTrue(!!accountsMenuItem);
+        const accountsMenuItem = getAccountsMenuItem();
         assertEquals('2 accounts', accountsMenuItem.sublabel);
 
         // Remove an account to leave only 1 account