Chore: Convert pageActionBar test to RTL (#51073)

* Convert pageActionBar test to RTL

* add test for conditional render of button

.betterer.results

@@ -92,9 +92,6 @@ exports[`no enzyme tests`] = {
     "packages/jaeger-ui-components/src/TraceTimelineViewer/index.test.js:276996587": [
       [14, 19, 13, "RegExp match", "2409514259"]
     ],
-    "public/app/core/components/PageActionBar/PageActionBar.test.tsx:1251504193": [
-      [0, 19, 13, "RegExp match", "2409514259"]
-    ],
     "public/app/core/components/QueryOperationRow/QueryOperationAction.test.tsx:3032694716": [
       [0, 19, 13, "RegExp match", "2409514259"]
     ],

public/app/core/components/PageActionBar/PageActionBar.test.tsx

@@ -1,4 +1,4 @@
-import { shallow } from 'enzyme';
+import { render, screen } from '@testing-library/react';
 import React from 'react';
 
 import PageActionBar, { Props } from './PageActionBar';
@@ -13,13 +13,20 @@ const setup = (propOverrides?: object) => {
 
   Object.assign(props, propOverrides);
 
-  return shallow(<PageActionBar {...props} />);
+  return render(<PageActionBar {...props} />);
 };
 
 describe('Render', () => {
   it('should render component', () => {
-    const wrapper = setup();
+    setup();
 
-    expect(wrapper).toMatchSnapshot();
+    expect(screen.getByRole('textbox')).toBeInTheDocument();
+    expect(screen.getByRole('link', { name: 'test' })).toBeInTheDocument();
+    expect(screen.queryByRole('button', { name: 'Clear' })).not.toBeInTheDocument();
+  });
+  it('should render button when text is present', () => {
+    setup({ searchQuery: 'test query' });
+
+    expect(screen.getByRole('button', { name: 'Clear' })).toBeInTheDocument();
   });
 });

public/app/core/components/PageActionBar/__snapshots__/PageActionBar.test.tsx.snap

@@ -1,23 +0,0 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
-
-exports[`Render should render component 1`] = `
-<div
-  className="page-action-bar"
->
-  <div
-    className="gf-form gf-form--grow"
-  >
-    <FilterInput
-      onChange={[MockFunction]}
-      placeholder="Search by name or type"
-      value=""
-    />
-  </div>
-  <LinkButton
-    href="some/url"
-    target="_blank"
-  >
-    test
-  </LinkButton>
-</div>
-`;