@@ -424,6 +424,38 @@ test.describe( 'Image', () => {
 		page,
 		editor,
 	} ) => {
+		// Serve Openverse and its image hosts locally; CI runners can't reliably fetch them.
+		const mockImages = [
+			'10x10_e2e_test_image_green.png',
+			'10x10_e2e_test_image_z9T8jK.png',
+		];
+		await page.route(
+			'https://api.openverse.engineering/v1/images/?*',
+			( route ) =>
+				route.fulfill( {
+					json: {
+						results: mockImages.map( ( fileName, index ) => ( {
+							id: `mock-${ index }`,
+							title: fileName,
+							url: `https://openverse.test/${ fileName }`,
+							thumbnail: `https://openverse.test/${ fileName }`,
+							license: 'cc0',
+							license_version: '1.0',
+						} ) ),
+					},
+				} )
+		);
+		await page.route( 'https://openverse.test/*', ( route ) =>
+			route.fulfill( {
+				path: path.join(
+					__dirname,
+					'../../../assets',
+					new URL( route.request().url() ).pathname
+				),
+				headers: { 'Access-Control-Allow-Origin': '*' },
+			} )
+		);
+
 		await editor.insertBlock( { name: 'core/image' } );
 		const imageBlock = editor.canvas.getByRole( 'document', {
 			name: 'Block: Image',