Add unsupported block title translation test

packages/block-library/src/missing/test/edit-integration.native.js

@@ -0,0 +1,50 @@
+/**
+ * External dependencies
+ */
+import { initializeEditor } from 'test/helpers';
+
+/**
+ * WordPress dependencies
+ */
+import { getBlockTypes, unregisterBlockType } from '@wordpress/blocks';
+import * as i18n from '@wordpress/i18n';
+jest.mock( '@wordpress/i18n', () => {
+	const actual = jest.requireActual( '@wordpress/i18n' );
+	return {
+		...actual,
+		_x: jest.fn( actual._x ),
+	};
+} );
+
+/**
+ * Internal dependencies
+ */
+import { registerCoreBlocks } from '../..';
+
+beforeAll( () => {
+	// Register all core blocks
+	registerCoreBlocks();
+} );
+
+afterAll( () => {
+	// Clean up registered blocks
+	getBlockTypes().forEach( ( block ) => {
+		unregisterBlockType( block.name );
+	} );
+} );
+
+describe( 'Unsupported block', () => {
+	it( 'requests translated block title', async () => {
+		const initialHtml = `<!-- wp:table -->
+		 <figure class="wp-block-table"><table><tbody><tr><td>1</td><td>2</td></tr><tr><td>3</td><td>4</td></tr></tbody></table></figure>
+		 <!-- /wp:table -->`;
+		await initializeEditor( {
+			initialHtml,
+		} );
+
+		// jest spy for the _x translation function
+		const _xSpy = jest.spyOn( i18n, '_x' );
+
+		expect( _xSpy ).toHaveBeenCalled();
+	} );
+} );