fix: correctly resolve config in a workspace (#3947)

Author: sheremet-va

packages/browser/src/client/runner.ts

@@ -42,7 +42,8 @@ export function createBrowserRunner(original: any, coverageModule: CoverageHandl
     async onAfterRun() {
       await super.onAfterRun?.()
       const coverage = await coverageModule?.takeCoverage?.()
-      await rpc().onAfterSuiteRun({ coverage })
+      if (coverage)
+        await rpc().onAfterSuiteRun({ coverage })
     }
 
     onCollected(files: File[]): unknown {

packages/vitest/src/api/setup.ts

@@ -92,7 +92,7 @@ export function setup(vitestOrWorkspace: Vitest | WorkspaceProject, server?: Vit
           await ctx.rerunFiles(files)
         },
         getConfig() {
-          return ctx.config
+          return vitestOrWorkspace.config
         },
         async getTransformResult(id) {
           const result: TransformResultWithSource | null | undefined = await ctx.vitenode.transformRequest(id)

packages/vitest/src/node/core.ts

@@ -53,7 +53,7 @@ export class Vitest {
   restartsCount = 0
   runner: ViteNodeRunner = undefined!
 
-  private coreWorkspace!: WorkspaceProject
+  private coreWorkspaceProject!: WorkspaceProject
 
   public projects: WorkspaceProject[] = []
   private projectsTestFiles = new Map<string, Set<WorkspaceProject>>()
@@ -145,12 +145,12 @@ export class Vitest {
       runner: this.runner,
       server: this.vitenode,
     })
-    this.coreWorkspace = coreWorkspace
+    this.coreWorkspaceProject = coreWorkspace
     return coreWorkspace
   }
 
   public getCoreWorkspaceProject(): WorkspaceProject | null {
-    return this.coreWorkspace || null
+    return this.coreWorkspaceProject || null
   }
 
   public getProjectByTaskId(taskId: string): WorkspaceProject {
@@ -198,7 +198,7 @@ export class Vitest {
       onlyFiles: false,
       markDirectories: true,
       cwd: this.config.root,
-      ignore: ['**/node_modules/**'],
+      ignore: ['**/node_modules/**', '**/*.timestamp-*'],
     }
 
     const workspacesFs = await fg(workspaceGlobMatches, globOptions)
@@ -221,6 +221,21 @@ export class Vitest {
       return filepath
     }))
 
+    const workspacesByFolder = resolvedWorkspacesPaths
+      .reduce((configByFolder, filepath) => {
+        const dir = dirname(filepath)
+        configByFolder[dir] ??= []
+        configByFolder[dir].push(filepath)
+        return configByFolder
+      }, {} as Record<string, string[]>)
+
+    const filteredWorkspaces = Object.values(workspacesByFolder).map((configFiles) => {
+      if (configFiles.length === 1)
+        return configFiles[0]
+      const vitestConfig = configFiles.find(configFile => basename(configFile).startsWith('vitest.config'))
+      return vitestConfig || configFiles[0]
+    })
+
     const overridesOptions = [
       'logHeapUsage',
       'allowOnly',
@@ -239,7 +254,7 @@ export class Vitest {
       return acc
     }, {} as UserConfig)
 
-    const projects = resolvedWorkspacesPaths.map(async (workspacePath) => {
+    const projects = filteredWorkspaces.map(async (workspacePath) => {
       // don't start a new server, but reuse existing one
       if (
         this.server.config.configFile === workspacePath
@@ -725,7 +740,8 @@ export class Vitest {
     if (!this.closingPromise) {
       const closePromises = this.projects.map(w => w.close().then(() => w.server = undefined as any))
       // close the core workspace server only once
-      if (this.coreWorkspace && !this.projects.includes(this.coreWorkspace))
+      // it's possible that it's not initialized at all because it's not running any tests
+      if (!this.coreWorkspaceProject || !this.projects.includes(this.coreWorkspaceProject))
         closePromises.push(this.server.close().then(() => this.server = undefined as any))
 
       if (this.pool)