Add test case for Progress component (#2953)

* remove data-testid from div

* add test case for Progress component

* add changeset

* update the GraphiQLPage test cases to handle Progress timeout

* update the RadarComponent and RadarPage test case to handle Progress timeout

* update the TechDocsProgressBar test case to handle Progress timeout

* add changeset

plugins/graphiql/src/components/GraphiQLPage/GraphiQLPage.test.tsx

@@ -19,6 +19,7 @@ import { GraphiQLPage } from './GraphiQLPage';
 import { ThemeProvider } from '@material-ui/core';
 import { lightTheme } from '@backstage/theme';
 import { ApiProvider, ApiRegistry } from '@backstage/core';
+import { act } from 'react-dom/test-utils';
 import { renderWithEffects } from '@backstage/test-utils';
 import { GraphQLBrowseApi, graphQlBrowseApiRef } from '../../lib/api';
 
@@ -28,6 +29,7 @@ jest.mock('../GraphiQLBrowser', () => ({
 
 describe('GraphiQLPage', () => {
   it('should show progress', async () => {
+    jest.useFakeTimers();
     const loadingApi: GraphQLBrowseApi = {
       async getEndpoints() {
         await new Promise(() => {});
@@ -43,9 +45,12 @@ describe('GraphiQLPage', () => {
         ,
       </ApiProvider>,
     );
-
+    act(() => {
+      jest.advanceTimersByTime(250);
+    });
     rendered.getByText('GraphiQL');
     rendered.getByTestId('progress');
+    jest.useRealTimers();
   });
 
   it('should show error', async () => {