fix(workspace): throw error when browser mode and @vitest/coverage-v8 are used (#5250)

Author: AriPerkkio

packages/vitest/src/node/workspace.ts

@@ -297,7 +297,15 @@ export class WorkspaceProject {
   }
 
   async setServer(options: UserConfig, server: ViteDevServer) {
-    this.config = resolveConfig(this.ctx.mode, options, server.config)
+    this.config = resolveConfig(
+      this.ctx.mode,
+      {
+        ...options,
+        coverage: this.ctx.config.coverage,
+      },
+      server.config,
+    )
+
     this.server = server
 
     this.vitenode = new ViteNodeServer(server, this.config.server)
@@ -329,7 +337,6 @@ export class WorkspaceProject {
 
     return deepMerge({
       ...this.config,
-      coverage: this.ctx.config.coverage,
 
       poolOptions: {
         forks: {

test/config/fixtures/workspace/browser/workspace-with-browser.ts

@@ -0,0 +1,13 @@
+import { defineWorkspace } from "vitest/config";
+
+export default defineWorkspace([
+  {
+    test: {
+      name: "Browser project",
+      browser: {
+         enabled: true,
+         name: 'chrome'
+      },
+    }
+  }
+])

test/config/test/failures.test.ts

@@ -61,6 +61,12 @@ test('v8 coverage provider cannot be used with browser', async () => {
   expect(stderr).toMatch('Error: @vitest/coverage-v8 does not work with --browser. Use @vitest/coverage-istanbul instead')
 })
 
+test('v8 coverage provider cannot be used with browser in workspace', async () => {
+  const { stderr } = await runVitest({ coverage: { enabled: true }, workspace: './fixtures/workspace/browser/workspace-with-browser.ts' })
+
+  expect(stderr).toMatch('Error: @vitest/coverage-v8 does not work with --browser. Use @vitest/coverage-istanbul instead')
+})
+
 test('version number is printed when coverage provider fails to load', async () => {
   const { stderr, stdout } = await runVitest({
     coverage: {