Add test for cache page

src/main/webui/src/app/components/content/addons/Cache.test.jsx

@@ -0,0 +1,37 @@
+/**
+ * Copyright (C) 2023 Red Hat, Inc. (https://github.com/Commonjava/indy-ui-service)
+ *
+ * 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.
+ */
+
+import React from "react";
+import {render, screen, cleanup} from '@testing-library/react';
+import '@testing-library/jest-dom';
+import fetchMock from "fetch-mock";
+import Cache from "./Cache.jsx";
+
+beforeEach(()=>{
+  fetchMock.restore();
+});
+
+afterEach(() => {
+  cleanup();
+});
+
+describe('RemoteList tests', () => {
+  it("Verify Cache", ()=>{
+    render(<Cache />);
+    expect(screen.getByRole("textbox", {Name: "Input the the metadata url"})).toBeInTheDocument();
+    expect(screen.getByRole("button", {Name: "Delete"})).toBeInTheDocument();
+  });
+});