Add tests for Search

app/soapbox/components/account.tsx

@@ -125,7 +125,7 @@ const Account = ({
   const LinkEl: any = showProfileHoverCard ? Link : 'div';
 
   return (
-    <div className='flex-shrink-0 group block w-full overflow-hidden' ref={overflowRef}>
+    <div data-testid='account' className='flex-shrink-0 group block w-full overflow-hidden' ref={overflowRef}>
       <HStack alignItems={actionAlignment} justifyContent='between'>
         <HStack alignItems='center' space={3} grow>
           <ProfilePopper

app/soapbox/components/autosuggest_input.js

@@ -289,6 +289,7 @@ export default class AutosuggestInput extends ImmutablePureComponent {
           aria-autocomplete='list'
           id={id}
           maxLength={maxLength}
+          data-testid='autosuggest-input'
         />
 
         <div className={classNames({

app/soapbox/features/compose/components/__tests__/search.test.tsx

@@ -0,0 +1,28 @@
+import userEvent from '@testing-library/user-event';
+import React from 'react';
+
+import { __stub } from 'soapbox/api';
+
+import { render, screen } from '../../../../jest/test-helpers';
+import Search from '../search';
+
+describe('<Search />', () => {
+  it('successfully renders', async() => {
+    render(<Search autosuggest />);
+    expect(screen.getByLabelText('Search')).toBeInTheDocument();
+  });
+
+  it('handles onChange', async() => {
+    __stub(mock => {
+      mock.onGet('/api/v1/accounts/search').reply(200, [{ id: 1 }]);
+    });
+    const user = userEvent.setup();
+
+    render(<Search autosuggest />);
+
+    await user.type(screen.getByLabelText('Search'), '@jus');
+
+    expect(screen.getByLabelText('Search')).toHaveValue('@jus');
+    expect(screen.getByTestId('account')).toBeInTheDocument();
+  });
+});

app/soapbox/jest/test-setup.ts

@@ -8,3 +8,6 @@ afterEach(() => clearApiMocks());
 
 // Mock external dependencies
 jest.mock('uuid', () => ({ v4: jest.fn(() => 1) }));
+
+const intersectionObserverMock = () => ({ observe: () => null, disconnect: () => null });
+window.IntersectionObserver = jest.fn().mockImplementation(intersectionObserverMock);