not

vitest sayfasinda vitest tesy=t uklendi 
doc
viteconfig ts atatlandi /// <reference types="vitest" />
import { defineConfig } from 'vite'

export default defineConfig({
  test: {
    // ...
  },
})
npm i jsdom yukldeik 

vitecofing boyle ataldik
// <reference types="vitest" />

import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'

// https://vitejs.dev/config/
export default defineConfig({
  plugins: [react()],
  test: {
  environment:"jsdom"
  },
})
sonra vitest ui kurduk consolda gormemsini saglayacak
package.json gifdip degsiklik yapipruyz
"test": "vitest --ui",
sonra 
bir key daga gubcelledik
/// <reference types="vitest" />
/// <reference types="vite/client" />

import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'

// https://vitejs.dev/config/
export default defineConfig({
  plugins: [react()],
  test: {
  environment:"jsdom",
  globals:true
  },
})
https://vitest.dev/config/#globals bu dokuman inceledim bulamayuzzca getting stsrt arama yaptim tyscript  zaydimh
config otioms global setup secrtim

ttps://vitest.dev/config/#globalsetup
buradaki siramadan gittim ilk siradia true saten yapmistim 
"types": ["vitest/globals"]
sonra libaray dic  
npm install --save-dev @testing-library/react