chore(BackgroundImage): update tests (#9584)

* chore(BackgroundImage): update tests

* add spread prop test, update test

* use styles obj

* update test name to use styles

packages/react-core/src/components/BackgroundImage/__tests__/BackgroundImage.test.tsx

@@ -1,20 +1,34 @@
 import React from 'react';
 import { render, screen } from '@testing-library/react';
 import { BackgroundImage } from '../BackgroundImage';
+import styles from '@patternfly/react-styles/css/components/BackgroundImage/background-image';
 
-test('has default className and src URL applied to style', () => {
+test(`renders with default className ${styles.backgroundImage}`, () => {
   render(<BackgroundImage src="/image/url.png" data-testid="test-id" />);
+  expect(screen.getByTestId('test-id')).toHaveClass(styles.backgroundImage, { exact: true });
+});
+
+test('spreads additional props', () => {
+  render(<BackgroundImage src="/image/url.png" data-testid="test-id" lang="en-US" />);
+  expect(screen.getByTestId('test-id')).toHaveProperty('lang');
+});
 
-  const backgroundImage = screen.getByTestId('test-id');
-  const backgroundImageStyle = backgroundImage.getAttribute('style');
+test('has src URL applied to style', () => {
+  render(<BackgroundImage src="/image/url.png" data-testid="test-id" />);
 
-  expect(backgroundImage).toHaveClass('pf-v5-c-background-image');
-  expect(backgroundImageStyle).toContain('--pf-v5-c-background-image--BackgroundImage');
-  expect(backgroundImageStyle).toContain('/image/url.png');
+  expect(screen.getByTestId('test-id')).toHaveAttribute(
+    'style',
+    '--pf-v5-c-background-image--BackgroundImage: url(/image/url.png);'
+  );
 });
 
-test('has additional className when one is provided', () => {
+test('renders with custom className when one is provided', () => {
   render(<BackgroundImage src="/image/url.png" className="another-class" data-testid="test-id" />);
 
   expect(screen.getByTestId('test-id')).toHaveClass('another-class');
 });
+
+test('Matches the snapshot', () => {
+  const { asFragment } = render(<BackgroundImage src="/image/url.png" data-testid="test-id" />);
+  expect(asFragment()).toMatchSnapshot();
+});

packages/react-core/src/components/BackgroundImage/__tests__/__snapshots__/BackgroundImage.test.tsx.snap

@@ -0,0 +1,11 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Matches the snapshot 1`] = `
+<DocumentFragment>
+  <div
+    class="pf-v5-c-background-image"
+    data-testid="test-id"
+    style="--pf-v5-c-background-image--BackgroundImage: url(/image/url.png);"
+  />
+</DocumentFragment>
+`;