chore: add test-image-service

packages/integrations/vercel/test/fixtures/image/astro.config.mjs

@@ -1,15 +1,17 @@
 import vercel from '@astrojs/vercel/static';
 import { defineConfig } from 'astro/config';
-import { testImageService } from '../../../../../astro/test/test-image-service.js';
+import { testImageService } from '../../test-image-service.js';
 
 export default defineConfig({
-	adapter: vercel({imageService: true}),
+	adapter: vercel({ imageService: true }),
 	image: {
 		service: testImageService(),
 		domains: ['astro.build'],
-		remotePatterns: [{
-      protocol: 'https',
-      hostname: '**.amazonaws.com',
-    }],
+		remotePatterns: [
+			{
+				protocol: 'https',
+				hostname: '**.amazonaws.com',
+			},
+		],
 	},
 });

packages/integrations/vercel/test/serverless-prerender.test.js

@@ -22,7 +22,7 @@ describe('Serverless prerender', () => {
 		const [file] = await fixture.glob(
 			'../.vercel/output/functions/_render.func/packages/integrations/vercel/test/fixtures/serverless-prerender/.vercel/output/_functions/pages/_image.astro.mjs'
 		);
-		const contents = await fixture.readFile(file);
+		const contents = await fixture.readfile(file);
 		assert.ok(!contents.includes('const outDir ='), "outDir is tree-shaken if it's not imported");
 	});
 

packages/integrations/vercel/test/test-image-service.js

@@ -0,0 +1,32 @@
+import { fileURLToPath } from 'node:url';
+import { baseService } from 'astro/assets';
+
+/**
+ * stub image service that returns images as-is without optimization
+ * @param {{ foo?: string }} [config]
+ */
+export function testImageService(config = {}) {
+	return {
+		entrypoint: fileURLToPath(import.meta.url),
+		config,
+	};
+}
+
+/** @type {import("../dist/@types/astro").LocalImageService} */
+export default {
+	...baseService,
+	propertiesToHash: [...baseService.propertiesToHash, 'data-custom'],
+	getHTMLAttributes(options, serviceConfig) {
+		options['data-service'] = 'my-custom-service';
+		if (serviceConfig.service.config.foo) {
+			options['data-service-config'] = serviceConfig.service.config.foo;
+		}
+		return baseService.getHTMLAttributes(options);
+	},
+	async transform(buffer, transform) {
+		return {
+			data: buffer,
+			format: transform.format,
+		};
+	},
+};