fix: prevent birpc timeouts when Math.random mock is not restored (…

…#3460)

packages/ui/package.json

@@ -69,7 +69,7 @@
     "@vitest/ws-client": "workspace:*",
     "@vueuse/core": "^10.1.2",
     "ansi-to-html": "^0.7.2",
-    "birpc": "0.2.11",
+    "birpc": "0.2.12",
     "codemirror": "^5.65.13",
     "codemirror-theme-vars": "^0.1.2",
     "cypress": "^12.11.0",

packages/vitest/package.json

@@ -174,7 +174,7 @@
     "@types/micromatch": "^4.0.2",
     "@types/prompts": "^2.4.4",
     "@types/sinonjs__fake-timers": "^8.1.2",
-    "birpc": "0.2.11",
+    "birpc": "0.2.12",
     "chai-subset": "^1.6.0",
     "cli-truncate": "^3.1.0",
     "event-target-polyfill": "^0.0.3",

packages/ws-client/package.json

@@ -39,7 +39,7 @@
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
-    "birpc": "0.2.11",
+    "birpc": "0.2.12",
     "flatted": "^3.2.7",
     "ws": "^8.13.0"
   },

test/core/test/mock-internals.test.ts

@@ -1,6 +1,6 @@
 import childProcess, { exec } from 'node:child_process'
 import timers from 'node:timers'
-import { expect, test, vi } from 'vitest'
+import { type SpyInstance, afterEach, beforeEach, describe, expect, test, vi } from 'vitest'
 import { execDefault, execHelloWorld, execImportAll } from '../src/exec'
 import { dynamicImport } from '../src/dynamic-import'
 
@@ -28,3 +28,31 @@ test('mocked dynamically imported packages', async () => {
   expect(mod.default).toHaveProperty('clearInterval')
   expect(mod.default.clearInterval()).toBe('foo')
 })
+
+describe('Math.random', () => {
+  describe('mock is restored', () => {
+    let spy: SpyInstance
+
+    beforeEach(() => {
+      spy = vi.spyOn(Math, 'random').mockReturnValue(0.1)
+    })
+    afterEach(() => {
+      spy.mockRestore()
+    })
+
+    test('is mocked', () => {
+      expect(Math.random()).toBe(0.1)
+    })
+  })
+
+  // This used to make dependencies stuck, e.g. birpc
+  describe('mock is not restored and leaks', () => {
+    beforeEach(() => {
+      vi.spyOn(Math, 'random').mockReturnValue(0.1)
+    })
+
+    test('is mocked', () => {
+      expect(Math.random()).toBe(0.1)
+    })
+  })
+})