test: make sure all ways to build turbopack fixture would set --turbopack cli toggle

Author: pieh

tests/fixtures/hello-world-turbopack/package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "postinstall": "next build --turbopack",
     "dev": "next dev --turbopack",
-    "build": "next build"
+    "build": "next build --turbopack"
   },
   "dependencies": {
     "next": "latest",

tests/utils/create-e2e-fixture.ts

@@ -316,7 +316,10 @@ async function cleanup(dest: string, deployId?: string): Promise<void> {
 
 export const fixtureFactories = {
   simple: () => createE2EFixture('simple'),
-  helloWorldTurbopack: () => createE2EFixture('hello-world-turbopack'),
+  helloWorldTurbopack: () =>
+    createE2EFixture('hello-world-turbopack', {
+      buildCommand: 'next build --turbopack',
+    }),
   outputExport: () => createE2EFixture('output-export'),
   ouputExportPublishOut: () =>
     createE2EFixture('output-export', {