fix(vitest): inject "define" in workspaces (#4096)

Author: sheremet-va

packages/vitest/src/node/plugins/workspace.ts

@@ -4,7 +4,7 @@ import { configDefaults } from '../../defaults'
 import { generateScopedClassName } from '../../integrations/css/css-modules'
 import { deepMerge } from '../../utils/base'
 import type { WorkspaceProject } from '../workspace'
-import type { UserWorkspaceConfig } from '../../types'
+import type { ResolvedConfig, UserWorkspaceConfig } from '../../types'
 import { CoverageTransform } from './coverageTransform'
 import { CSSEnablerPlugin } from './cssEnabler'
 import { SsrReplacerPlugin } from './ssrReplacer'
@@ -28,7 +28,7 @@ export function WorkspaceVitestPlugin(project: WorkspaceProject, options: Worksp
         this.meta.watchMode = false
       },
       config(viteConfig) {
-        const env: Record<string, any> = deleteDefineConfig(viteConfig)
+        const defines: Record<string, any> = deleteDefineConfig(viteConfig)
 
         const testConfig = viteConfig.test || {}
 
@@ -79,11 +79,12 @@ export function WorkspaceVitestPlugin(project: WorkspaceProject, options: Worksp
             },
           },
           test: {
-            env,
             name,
           },
         }
 
+        ;(config.test as ResolvedConfig).defines = defines
+
         const classNameStrategy = (typeof testConfig.css !== 'boolean' && testConfig.css?.modules?.classNameStrategy) || 'stable'
 
         if (classNameStrategy !== 'scoped') {

test/workspaces/globalTest.ts

@@ -6,9 +6,9 @@ export async function teardown() {
 
   try {
     assert.ok(results.success)
-    assert.equal(results.numTotalTestSuites, 6)
-    assert.equal(results.numTotalTests, 7)
-    assert.equal(results.numPassedTests, 7)
+    assert.equal(results.numTotalTestSuites, 7)
+    assert.equal(results.numTotalTests, 8)
+    assert.equal(results.numPassedTests, 8)
 
     const shared = results.testResults.filter((r: any) => r.name.includes('space_shared/test.spec.ts'))
 

test/workspaces/space_1/test/env-injected.spec.ts

@@ -0,0 +1,9 @@
+import { expect, test } from 'vitest'
+
+declare global {
+  const __DEV__: boolean
+}
+
+test('dev is injected', () => {
+  expect(__DEV__).toBe(true)
+})

test/workspaces/space_1/vite.config.ts

@@ -1,6 +1,9 @@
 import { defineProject } from 'vitest/config'
 
 export default defineProject({
+  define: {
+    __DEV__: 'true',
+  },
   test: {
     name: 'space_1',
     environment: 'happy-dom',