Migrate code block test case to playwright

test/e2e/specs/editor/blocks/code.spec.js

@@ -0,0 +1,62 @@
+/**
+ * WordPress dependencies
+ */
+
+const { test, expect } = require( '@wordpress/e2e-test-utils-playwright' );
+
+test.describe( 'Code', () => {
+	test.beforeEach( async ( { admin } ) => {
+		await admin.createNewPost();
+	} );
+
+	test( 'can be created by three backticks and enter', async ( {
+		editor,
+		page,
+	} ) => {
+		await page.click( 'role=button[name="Add default block"i]' );
+		await page.keyboard.type( '```' );
+		await page.keyboard.press( 'Enter' );
+		await page.keyboard.type( '<?php' );
+
+		// Check the content
+		const content = await editor.getEditedPostContent();
+		expect( content ).toBe(
+			`<!-- wp:code -->
+<pre class="wp-block-code"><code>&lt;?php</code></pre>
+<!-- /wp:code -->`
+		);
+	} );
+
+	test( 'should delete block when backspace in an empty code', async ( {
+		editor,
+		page,
+	} ) => {
+		await editor.insertBlock( { name: 'core/code' } );
+
+		await page.keyboard.type( 'a' );
+
+		await page.keyboard.press( 'Backspace' );
+		await page.keyboard.press( 'Backspace' );
+
+		// Expect code block to be deleted.
+		expect( await editor.getEditedPostContent() ).toBe( '' );
+	} );
+
+	test( 'should paste plain text', async ( { editor, page, pageUtils } ) => {
+		await editor.insertBlock( { name: 'core/code' } );
+
+		// Test to see if HTML and white space is kept.
+		await pageUtils.setClipboardData( { plainText: '<img />\n\t<br>' } );
+
+		await pageUtils.pressKeyWithModifier( 'primary', 'v' );
+
+		// Check the content
+		const content = await editor.getEditedPostContent();
+		expect( content ).toBe(
+			`<!-- wp:code -->
+<pre class="wp-block-code"><code>&lt;img />
+	&lt;br></code></pre>
+<!-- /wp:code -->`
+		);
+	} );
+} );