test: give each dev spec its own fixture copy

Author: danielroe

.gitignore

@@ -10,6 +10,7 @@ stats.json
 playground-bun*
 playground-deno*
 playground-node*
+packages/nuxt-cli/test/fixtures/.tmp-*
 packages/nuxi/src/utils/completions-data.ts
 packages/nuxt-cli/src/data/nitro-presets.ts
 packages/nuxt-cli/src/data/templates.ts

packages/nuxt-cli/test/e2e/dev-restart.spec.ts

@@ -1,12 +1,12 @@
 import{randomUUID}from'node:crypto'
 import{rm}from'node:fs/promises'
 import{join}from'node:path'
-import{fileURLToPath}from'node:url'
 import{getPort}from'get-port-please'
 import{describe,expect,it,vi}from'vitest'
 import{initialize}from'../../src/dev'
+import{createDevFixture}from'../utils'
 
-constfixtureDir=fileURLToPath(newURL('../fixtures/dev',import.meta.url))
+constfixtureDir=awaitcreateDevFixture('dev-restart')
 
 describe('dev server reload',()=>{
 it('should settle in-flight requests when nuxt reloads',{timeout: 90_000},async()=>{

packages/nuxt-cli/test/e2e/dev.spec.ts

@@ -4,10 +4,11 @@ import { fileURLToPath } from 'node:url'
 import{getPort}from'get-port-please'
 import{afterEach,describe,expect,it,vi}from'vitest'
 import{runCommand}from'../../src'
+import{createDevFixture}from'../utils'
 
 constNEWLINE_RE=/\r?\n/
 
-constfixtureDir=fileURLToPath(newURL('../fixtures/dev',import.meta.url))
+constfixtureDir=awaitcreateDevFixture('dev')
 
 constcertsDir=fileURLToPath(newURL('../../../../playground/certs',import.meta.url))
 consthttpsCert=join(certsDir,'cert.dummy')

packages/nuxt-cli/test/utils/index.ts

@@ -1,3 +1,6 @@
+import{cp,rm,symlink}from'node:fs/promises'
+import{join,sep}from'node:path'
+import{fileURLToPath}from'node:url'
 import{isCI}from'std-env'
 
 exportasyncfunctionfetchWithPolling(url: string,options: RequestInit={},maxAttempts=10,interval=100): Promise<Response|null>{
@@ -18,3 +21,24 @@ export async function fetchWithPolling(url: string, options: RequestInit = {}, m
 }
 returnresponse
 }
+
+/**
+ * Clone the shared `dev` fixture into a project private to a single spec file.
+ *
+ * The dev e2e specs each wipe `.nuxt` and take the dev lock inside their
+ * fixture, so pointing more than one of them at `fixtures/dev` makes them race
+ * whenever vitest runs the files in parallel.
+ */
+exportasyncfunctioncreateDevFixture(name: string): Promise<string>{
+constsource=fileURLToPath(newURL('../fixtures/dev',import.meta.url))
+consttarget=fileURLToPath(newURL(`../fixtures/.tmp-${name}`,import.meta.url))
+
+awaitrm(target,{recursive: true,force: true})
+awaitcp(source,target,{
+recursive: true,
+filter: entry=>!entry.includes('node_modules')&&!entry.includes(`${sep}.nuxt`),
+})
+awaitsymlink(join(source,'node_modules'),join(target,'node_modules'),'junction')
+
+returntarget
+}