Enable Jest and Percy snapshots for `PreferencesUserSettingsTab` (#10701)

Signed-off-by: Suguru Hirahara <luixxiul@users.noreply.github.com>

cypress/e2e/settings/preferences-user-settings-tab.spec.ts

@@ -0,0 +1,45 @@
+/*
+Copyright 2023 Suguru Hirahara
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+/// <reference types="cypress" />
+
+import { HomeserverInstance } from "../../plugins/utils/homeserver";
+
+describe("Preferences user settings tab", () => {
+    let homeserver: HomeserverInstance;
+
+    beforeEach(() => {
+        cy.startHomeserver("default").then((data) => {
+            homeserver = data;
+            cy.initTestUser(homeserver, "Bob");
+        });
+    });
+
+    afterEach(() => {
+        cy.stopHomeserver(homeserver);
+    });
+
+    it("should be rendered properly", () => {
+        cy.openUserSettings("Preferences");
+
+        cy.get(".mx_SettingsTab.mx_PreferencesUserSettingsTab").within(() => {
+            // Assert that the top heading is rendered
+            cy.findByTestId("preferences").should("have.text", "Preferences").should("be.visible");
+        });
+
+        cy.get(".mx_SettingsTab.mx_PreferencesUserSettingsTab").percySnapshotElement("User settings tab - Preferences");
+    });
+});

src/components/views/settings/tabs/user/PreferencesUserSettingsTab.tsx

@@ -144,7 +144,9 @@ export default class PreferencesUserSettingsTab extends React.Component<IProps,
 
         return (
             <div className="mx_SettingsTab mx_PreferencesUserSettingsTab">
-                <div className="mx_SettingsTab_heading">{_t("Preferences")}</div>
+                <div className="mx_SettingsTab_heading" data-testid="preferences">
+                    {_t("Preferences")}
+                </div>
 
                 {roomListSettings.length > 0 && (
                     <div className="mx_SettingsTab_section">

test/components/views/settings/tabs/user/PreferencesUserSettingsTab-test.tsx

@@ -33,6 +33,11 @@ describe("PreferencesUserSettingsTab", () => {
         return render(<PreferencesUserSettingsTab closeSettingsFn={() => {}} />);
     };
 
+    it("should render", () => {
+        const { asFragment } = renderTab();
+        expect(asFragment()).toMatchSnapshot();
+    });
+
     describe("send read receipts", () => {
         beforeEach(() => {
             stubClient();