diff --git a/__mocks__/@org/vuepress-plugin-a.js b/__mocks__/@org/vuepress-plugin-mocked-a.js
similarity index 100%
rename from __mocks__/@org/vuepress-plugin-a.js
rename to __mocks__/@org/vuepress-plugin-mocked-a.js
diff --git a/__mocks__/@org/vuepress-plugin-b.js b/__mocks__/@org/vuepress-plugin-mocked-b.js
similarity index 100%
rename from __mocks__/@org/vuepress-plugin-b.js
rename to __mocks__/@org/vuepress-plugin-mocked-b.js
diff --git a/__mocks__/@org/vuepress-theme-a/index.js b/__mocks__/@org/vuepress-theme-mocked-a/index.js
similarity index 100%
rename from __mocks__/@org/vuepress-theme-a/index.js
rename to __mocks__/@org/vuepress-theme-mocked-a/index.js
diff --git a/__mocks__/@vuepress/plugin-a.js b/__mocks__/@vuepress/plugin-mocked-a.js
similarity index 100%
rename from __mocks__/@vuepress/plugin-a.js
rename to __mocks__/@vuepress/plugin-mocked-a.js
diff --git a/__mocks__/@vuepress/theme-a/index.js b/__mocks__/@vuepress/theme-mocked-a/index.js
similarity index 100%
rename from __mocks__/@vuepress/theme-a/index.js
rename to __mocks__/@vuepress/theme-mocked-a/index.js
diff --git a/__mocks__/vuepress-plugin-a.js b/__mocks__/vuepress-plugin-mocked-a.js
similarity index 100%
rename from __mocks__/vuepress-plugin-a.js
rename to __mocks__/vuepress-plugin-mocked-a.js
diff --git a/__mocks__/vuepress-plugin-b.js b/__mocks__/vuepress-plugin-mocked-b.js
similarity index 100%
rename from __mocks__/vuepress-plugin-b.js
rename to __mocks__/vuepress-plugin-mocked-b.js
diff --git a/__mocks__/vuepress-theme-child/index.js b/__mocks__/vuepress-theme-child/index.js
deleted file mode 100644
index 8cf79b81..00000000
--- a/__mocks__/vuepress-theme-child/index.js
+++ /dev/null
@@ -1,3 +0,0 @@
-module.exports = {
-  extend: 'vuepress-theme-parent'
-}
diff --git a/__mocks__/vuepress-theme-a/index.js b/__mocks__/vuepress-theme-mocked-a/index.js
similarity index 100%
rename from __mocks__/vuepress-theme-a/index.js
rename to __mocks__/vuepress-theme-mocked-a/index.js
diff --git a/__mocks__/vuepress-theme-child/Layout.vue b/__mocks__/vuepress-theme-mocked-child/Layout.vue
similarity index 100%
rename from __mocks__/vuepress-theme-child/Layout.vue
rename to __mocks__/vuepress-theme-mocked-child/Layout.vue
diff --git a/__mocks__/vuepress-theme-child/components/Home.vue b/__mocks__/vuepress-theme-mocked-child/components/Home.vue
similarity index 100%
rename from __mocks__/vuepress-theme-child/components/Home.vue
rename to __mocks__/vuepress-theme-mocked-child/components/Home.vue
diff --git a/__mocks__/vuepress-theme-mocked-child/index.js b/__mocks__/vuepress-theme-mocked-child/index.js
new file mode 100644
index 00000000..0e50d097
--- /dev/null
+++ b/__mocks__/vuepress-theme-mocked-child/index.js
@@ -0,0 +1,3 @@
+module.exports = {
+  extend: 'vuepress-theme-mocked-parent'
+}
diff --git a/__mocks__/vuepress-theme-parent/Layout.vue b/__mocks__/vuepress-theme-mocked-parent/Layout.vue
similarity index 100%
rename from __mocks__/vuepress-theme-parent/Layout.vue
rename to __mocks__/vuepress-theme-mocked-parent/Layout.vue
diff --git a/__mocks__/vuepress-theme-parent/components/Home.vue b/__mocks__/vuepress-theme-mocked-parent/components/Home.vue
similarity index 100%
rename from __mocks__/vuepress-theme-parent/components/Home.vue
rename to __mocks__/vuepress-theme-mocked-parent/components/Home.vue
diff --git a/__mocks__/vuepress-theme-parent/components/Sidebar.vue b/__mocks__/vuepress-theme-mocked-parent/components/Sidebar.vue
similarity index 100%
rename from __mocks__/vuepress-theme-parent/components/Sidebar.vue
rename to __mocks__/vuepress-theme-mocked-parent/components/Sidebar.vue
diff --git a/__mocks__/vuepress-theme-parent/index.js b/__mocks__/vuepress-theme-mocked-parent/index.js
similarity index 100%
rename from __mocks__/vuepress-theme-parent/index.js
rename to __mocks__/vuepress-theme-mocked-parent/index.js
diff --git a/packages/@vuepress/core/lib/node/__tests__/plugin-api/PluginAPI.spec.js b/packages/@vuepress/core/lib/node/__tests__/plugin-api/PluginAPI.spec.js
index 2f21ad45..237f3859 100644
--- a/packages/@vuepress/core/lib/node/__tests__/plugin-api/PluginAPI.spec.js
+++ b/packages/@vuepress/core/lib/node/__tests__/plugin-api/PluginAPI.spec.js
@@ -1,6 +1,6 @@
-jest.mock('vuepress-plugin-a')
-jest.mock('vuepress-plugin-b')
-jest.mock('@org/vuepress-plugin-a')
+jest.mock('vuepress-plugin-mocked-a')
+jest.mock('vuepress-plugin-mocked-b')
+jest.mock('@org/vuepress-plugin-mocked-a')
 
 import PluginAPI from '../../plugin-api/index'
 import { PLUGIN_OPTION_MAP } from '../../plugin-api/constants'
@@ -16,37 +16,37 @@ describe('Plugin', () => {
 
   test('useByPluginsConfig', () => {
     [
-      ['a'],
-      [['a']],
-      [['a', true]],
-      { a: true }
+      ['mocked-a'],
+      [['mocked-a']],
+      [['mocked-a', true]],
+      { 'mocked-a': true }
     ].forEach(pluginsConfig => {
       const api = new PluginAPI()
       api.useByPluginsConfig(pluginsConfig)
       expect(api.enabledPlugins).toHaveLength(1)
-      expect(api.enabledPlugins[0].name).toBe('vuepress-plugin-a')
+      expect(api.enabledPlugins[0].name).toBe('vuepress-plugin-mocked-a')
       expect(api.disabledPlugins).toHaveLength(0)
     })
   })
 
   test('useByPluginsConfig - disable plugin', () => {
     [
-      [['a', false]],
-      { a: false }
+      [['mocked-a', false]],
+      { 'mocked-a': false }
     ].forEach(pluginsConfig => {
       const api = new PluginAPI()
       api.useByPluginsConfig(pluginsConfig)
       expect(api.enabledPlugins).toHaveLength(0)
       expect(api.disabledPlugins).toHaveLength(1)
-      expect(api.disabledPlugins[0].name).toBe('vuepress-plugin-a')
+      expect(api.disabledPlugins[0].name).toBe('vuepress-plugin-mocked-a')
     })
   })
 
   test('useByPluginsConfig - get options', () => {
     const pluginOptions = {};
     [
-      [['a', pluginOptions]],
-      { a: pluginOptions }
+      [['mocked-a', pluginOptions]],
+      { 'mocked-a': pluginOptions }
     ].forEach(pluginsConfig => {
       const api = new PluginAPI()
       api.useByPluginsConfig(pluginsConfig)
@@ -59,9 +59,9 @@ describe('Plugin', () => {
     const pluginOptions2 = {}
     const pluginOptions3 = {}
     const pluginsConfig = [
-      ['a', pluginOptions1],
-      ['a', pluginOptions2],
-      ['a', pluginOptions3]
+      ['mocked-a', pluginOptions1],
+      ['mocked-a', pluginOptions2],
+      ['mocked-a', pluginOptions3]
     ]
     const api = new PluginAPI()
     api.useByPluginsConfig(pluginsConfig)
@@ -74,8 +74,8 @@ describe('Plugin', () => {
     const pluginOptions1 = { a: 1 }
     const pluginOptions2 = { b: 1 }
     const pluginsConfig = [
-      ['b', pluginOptions1],
-      ['b', pluginOptions2]
+      ['mocked-b', pluginOptions1],
+      ['mocked-b', pluginOptions2]
     ]
     const api = new PluginAPI()
     api.useByPluginsConfig(pluginsConfig)
diff --git a/packages/@vuepress/core/lib/node/__tests__/theme-api/index.spec.js b/packages/@vuepress/core/lib/node/__tests__/theme-api/index.spec.js
index 89dccf98..02ca5fe6 100644
--- a/packages/@vuepress/core/lib/node/__tests__/theme-api/index.spec.js
+++ b/packages/@vuepress/core/lib/node/__tests__/theme-api/index.spec.js
@@ -1,19 +1,19 @@
-jest.mock('vuepress-theme-parent')
-jest.mock('vuepress-theme-child')
+jest.mock('vuepress-theme-mocked-parent')
+jest.mock('vuepress-theme-mocked-child')
 
 import ThemeAPI from '../../theme-api'
 import { resolve } from 'path'
 
 const theme = {
-  path: resolve(process.cwd(), '__mocks__/vuepress-theme-child'),
-  name: 'vuepress-theme-child',
+  path: resolve(process.cwd(), '__mocks__/vuepress-theme-mocked-child'),
+  name: 'vuepress-theme-mocked-child',
   shortcut: 'child',
-  entryFile: require('vuepress-theme-child')
+  entryFile: require('vuepress-theme-mocked-child')
 }
 
 const parent = {
-  path: resolve(process.cwd(), '__mocks__/vuepress-theme-parent'),
-  name: 'vuepress-theme-parent',
+  path: resolve(process.cwd(), '__mocks__/vuepress-theme-mocked-parent'),
+  name: 'vuepress-theme-mocked-parent',
   shortcut: 'parent',
   entryFile: {}
 }
@@ -23,5 +23,4 @@ describe('ThemeAPI', () => {
     const themeAPI = new ThemeAPI(theme, parent)
     console.log(themeAPI.theme.entry)
   })
-  // loadTheme('vuepress-theme-child')
 })
diff --git a/packages/@vuepress/shared-utils/__tests__/moduleResolver.spec.ts b/packages/@vuepress/shared-utils/__tests__/moduleResolver.spec.ts
index 5f3e9dad..44ca9e2f 100644
--- a/packages/@vuepress/shared-utils/__tests__/moduleResolver.spec.ts
+++ b/packages/@vuepress/shared-utils/__tests__/moduleResolver.spec.ts
@@ -1,10 +1,10 @@
-jest.mock('vuepress-plugin-a')
-jest.mock('@org/vuepress-plugin-a')
-jest.mock('@vuepress/plugin-a')
+jest.mock('vuepress-plugin-mocked-a')
+jest.mock('@org/vuepress-plugin-mocked-a')
+jest.mock('@vuepress/plugin-mocked-a')
 
-jest.mock('vuepress-theme-a')
-jest.mock('@org/vuepress-theme-a')
-jest.mock('@vuepress/theme-a')
+jest.mock('vuepress-theme-mocked-a')
+jest.mock('@org/vuepress-theme-mocked-a')
+jest.mock('@vuepress/theme-mocked-a')
 
 import path from 'path'
 import {
@@ -39,25 +39,25 @@ afterAll(() => {
 
 describe('resolveScopePackage', () => {
   test('corrent format', () => {
-    const pkg = resolveScopePackage('@vuepress/plugin-a')
+    const pkg = resolveScopePackage('@vuepress/plugin-mocked-a')
     expect(pkg.org).toBe('vuepress')
-    expect(pkg.name).toBe('plugin-a')
+    expect(pkg.name).toBe('plugin-mocked-a')
   })
 
   test('incorrect format', () => {
-    const pkg2 = resolveScopePackage('vuepress/plugin-a')
+    const pkg2 = resolveScopePackage('vuepress/plugin-mocked-a')
     expect(pkg2).toEqual({ "name": "", "org": "" })
 
-    const pkg3 = resolveScopePackage('vuepress-plugin-a')
+    const pkg3 = resolveScopePackage('vuepress-plugin-mocked-a')
     expect(pkg3).toEqual({ "name": "", "org": "" })
   })
 })
 
 const getBaseAsserts = (type: string) => [
-  { input: 'a', output: ['a', `vuepress-${type}-a`] },
-  { input: `vuepress-${type}-a`, output: ['a', `vuepress-${type}-a`] },
-  { input: '@vuepress/a', output: ['@vuepress/a', `@vuepress/${type}-a`] },
-  { input: '@org/a', output: ['@org/a', `@org/vuepress-${type}-a`] }
+  { input: 'a', output: ['a', `vuepress-${type}-mocked-a`] },
+  { input: `vuepress-${type}-a`, output: ['a', `vuepress-${type}-mocked-a`] },
+  { input: '@vuepress/a', output: ['@vuepress/a', `@vuepress/${type}-mocked-a`] },
+  { input: '@org/a', output: ['@org/a', `@org/vuepress-${type}-mocked-a`] }
 ]
 
 describe('normalizeRequest', () => {
@@ -87,7 +87,7 @@ describe('normalizeRequest', () => {
     const req = { name: 'a' }
     const { name, shortcut } = normalizeRequest(req)
     expect(shortcut).toBe('a')
-    expect(name).toBe(`vuepress-plugin-a`)
+    expect(name).toBe(`vuepress-plugin-mocked-a`)
   })
 })
 
diff --git a/packages/@vuepress/shared-utils/src/moduleLoader.ts b/packages/@vuepress/shared-utils/src/moduleLoader.ts
index b87d1875..3a32b9b2 100644
--- a/packages/@vuepress/shared-utils/src/moduleLoader.ts
+++ b/packages/@vuepress/shared-utils/src/moduleLoader.ts
@@ -38,14 +38,17 @@ const resolve = semver.satisfies(process.version, '>=10.0.0')
   ? require.resolve
   : resolveFallback
 
+const MOCKED_REGEX = /^(@vuepress\/|(@[\w-]+\/)?vuepress-)(theme|plugin)-mock-[\w-]+/
+
 export function resolveModule (request: string, context: string): string {
   let resolvedPath
   // TODO
   // Temporary workaround for jest cannot resolve module path from '__mocks__'
   // when using 'require.resolve'.
-  if (env.isTest && request !== '@vuepress/theme-default') {
+  if (env.isTest && MOCKED_REGEX.test(request)) {
     resolvedPath = path.resolve(__dirname, '../../../../__mocks__', request)
     if (!fs.existsSync(`${resolvedPath}.js`) && !fs.existsSync(`${resolvedPath}/index.js`)) {
+      console.log(resolvedPath)
       throw new Error(`Cannot find module '${request}'`)
     }
     return resolvedPath