1 files changed, 32 insertions, 0 deletions
diff --git a/packages/integrations/vercel/test/test-image-service.js b/packages/integrations/vercel/test/test-image-service.js
new file mode 100644
index 000000000..e3c5b4b6e
--- /dev/null
+++ b/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,
+		};
+	},
+};