test: failing test cases for vitest-dev#3659

test/env-mixed/fixtures/test/happy-dom.test.ts

@@ -0,0 +1,11 @@
+/**
+ * @vitest-environment happy-dom
+ */
+
+import { expect, test } from 'vitest'
+
+test('Leaking globals not found', async () => {
+  (globalThis as any).__leaking_from_happy_dom = 'leaking'
+  expect((globalThis as any).__leaking_from_node).toBe(undefined)
+  expect((globalThis as any).__leaking_from_jsdom).toBe(undefined)
+})

test/env-mixed/fixtures/test/jsdom.test.ts

@@ -0,0 +1,11 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { expect, test } from 'vitest'
+
+test('Leaking globals not found', async () => {
+  (globalThis as any).__leaking_from_jsdom = 'leaking'
+  expect((globalThis as any).__leaking_from_node).toBe(undefined)
+  expect((globalThis as any).__leaking_from_happy_dom).toBe(undefined)
+})

test/env-mixed/fixtures/test/node.test.ts

@@ -0,0 +1,11 @@
+/**
+ * @vitest-environment node
+ */
+
+import { expect, test } from 'vitest'
+
+test('Leaking globals not found', async () => {
+  (globalThis as any).__leaking_from_node = 'leaking'
+  expect((globalThis as any).__leaking_from_jsdom).toBe(undefined)
+  expect((globalThis as any).__leaking_from_happy_dom).toBe(undefined)
+})

test/env-mixed/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "@vitest/test-run",
+  "private": true,
+  "scripts": {
+    "test": "vitest"
+  },
+  "devDependencies": {
+    "happy-dom": "latest",
+    "vite": "latest",
+    "vitest": "workspace:*"
+  }
+}

test/env-mixed/test/mixed-environments.test.ts

@@ -0,0 +1,26 @@
+import { type UserConfig, expect, test } from 'vitest'
+
+import { runVitest } from '../../test-utils'
+
+const configs: UserConfig[] = [
+  { isolate: false, singleThread: true },
+  { isolate: false, singleThread: false },
+  { isolate: false, threads: true, minThreads: 1, maxThreads: 1 },
+  { isolate: false, threads: false },
+]
+
+test.each(configs)('should isolate environments when %s', async (config) => {
+  const { exitCode, stderr, stdout } = await runVitest({
+    root: './fixtures',
+    ...config,
+  })
+
+  expect(stderr).toBe('')
+  expect(exitCode).toBe(0)
+
+  expect(stdout).toContain('✓ test/node.test.ts > Leaking globals not found')
+  expect(stdout).toContain('✓ test/happy-dom.test.ts > Leaking globals not found')
+  expect(stdout).toContain('✓ test/jsdom.test.ts > Leaking globals not found')
+  expect(stdout).toContain('Test Files  3 passed (3)')
+  expect(stdout).toContain('Tests  3 passed (3)')
+})

test/env-mixed/vitest.config.ts

@@ -0,0 +1,7 @@
+import { defineConfig } from 'vitest/config'
+
+export default defineConfig({
+  test: {
+    include: ['./test/**/*'],
+  },
+})