Fix paste emulator

packages/e2e-test-utils-playwright/src/page-utils/press-keys.ts

@@ -50,7 +50,7 @@ export function setClipboardData(
 }
 
 async function emulateClipboard( page: Page, type: 'copy' | 'cut' | 'paste' ) {
-	clipboardDataHolder = await page.evaluate(
+	const output = await page.evaluate(
 		( [ _type, _clipboardData ] ) => {
 			const canvasDoc =
 				// @ts-ignore
@@ -99,6 +99,10 @@ async function emulateClipboard( page: Page, type: 'copy' | 'cut' | 'paste' ) {
 
 			canvasDoc.activeElement.dispatchEvent( event );
 
+			if ( _type === 'paste' ) {
+				return event.defaultPrevented;
+			}
+
 			return {
 				'text/plain': event.clipboardData.getData( 'text/plain' ),
 				'text/html': event.clipboardData.getData( 'text/html' ),
@@ -107,6 +111,17 @@ async function emulateClipboard( page: Page, type: 'copy' | 'cut' | 'paste' ) {
 		},
 		[ type, clipboardDataHolder ] as const
 	);
+
+	if ( typeof output === 'object' ) {
+		clipboardDataHolder = output;
+	}
+
+	if ( output === false ) {
+		// Emulate paste by typing the clipboard content, which works across all
+		// elements and documents (keyboard.type does uses the nested active
+		// element automatically).
+		await page.keyboard.type( clipboardDataHolder[ 'text/plain' ] );
+	}
 }
 
 const isAppleOS = () => process.platform === 'darwin';

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

@@ -0,0 +1,31 @@
+/**
+ * WordPress dependencies
+ */
+const { test, expect } = require( '@wordpress/e2e-test-utils-playwright' );
+
+test.describe( 'RSS', () => {
+	test.beforeEach( async ( { admin } ) => {
+		await admin.createNewPost();
+	} );
+
+	// See: https://github.com/WordPress/gutenberg/pull/61389.
+	test( 'should retain native copy/paste behavior for input fields', async ( {
+		editor,
+		pageUtils,
+	} ) => {
+		await editor.insertBlock( { name: 'core/rss' } );
+		pageUtils.setClipboardData( {
+			plainText: 'https://developer.wordpress.org/news/feed/',
+		} );
+		await pageUtils.pressKeys( 'primary+v' );
+
+		await expect.poll( editor.getBlocks ).toMatchObject( [
+			{
+				name: 'core/rss',
+				attributes: {
+					feedURL: 'https://developer.wordpress.org/news/feed/',
+				},
+			},
+		] );
+	} );
+} );