diff --git a/test/unit/basic.config.defaults.test.js b/test/unit/basic.config.defaults.test.js
index c6d9b85647..5e34e93e29 100644
--- a/test/unit/basic.config.defaults.test.js
+++ b/test/unit/basic.config.defaults.test.js
@@ -1,4 +1,6 @@
 import { resolve } from 'path'
+import consola from 'consola'
+
 import { Nuxt, Options, version } from '../utils'
 
 describe('basic config defaults', () => {
@@ -11,4 +13,16 @@ describe('basic config defaults', () => {
     const currentNodeModulesDir = resolve(__dirname, '..', '..', 'node_modules')
     expect(options.modulesDir.includes(currentNodeModulesDir)).toBe(true)
   })
+
+  test('vendor has been deprecated', async () => {
+    jest.spyOn(consola, 'warn')
+
+    const options = Options.from({
+      build: { vendor: 'vue' }
+    })
+    expect(options.build.vendor).toBeUndefined()
+    expect(consola.warn).toHaveBeenCalledWith('vendor has been deprecated due to webpack4 optimization')
+
+    consola.warn.mockRestore()
+  })
 })