Add Playwright e2e test for edit page

tests/e2e/specs/pages/edit-page.test.js

@@ -0,0 +1,45 @@
+/**
+ * WordPress dependencies
+ */
+const { test, expect } = require( '@wordpress/e2e-test-utils-playwright' );
+
+test.describe( 'Edit a wp page', () => {
+	// Create a new page before updating it
+	test.beforeEach( async ( { admin, requestUtils, editor } ) => {
+		await requestUtils.deleteAllPages();
+
+		//Create a new page
+		await admin.createNewPost( { postType: 'page', title: 'Test page' } );
+
+		// publish page
+		await editor.publishPost();
+	} );
+
+	test( 'should be able to edit page', async ( { page, admin } ) => {
+		// navigate to all pages
+		await admin.visitAdminPage( '/edit.php?post_type=page' );
+
+		// Click on the edit link
+		await page.hover( 'role=link[name="“Test page” (Edit)"i]' );
+		await page
+			.getByRole( 'link', { name: 'Edit “Test page”' } )
+			.first()
+			.click();
+
+		// Update the exiting page title
+		await page
+			.frameLocator( 'iframe[name="editor-canvas"]' )
+			.getByRole( 'textbox', { name: 'Add title' } )
+			.fill( 'Test Page - Edited' );
+
+		// Click on save button
+		await page.getByRole( 'button', { name: 'Save', exact: true } ).click();
+
+		// A success notice should show up
+		await expect( page.getByTestId( 'snackbar' ) ).toBeVisible();
+		await admin.visitAdminPage( '/edit.php?post_type=page' );
+		expect(
+			page.getByRole( 'link', { name: 'Test Page – Edited” (Edit)' } )
+		).toBeVisible();
+	} );
+} );