plspace/src/test/setup.ts

import '@testing-library/jest-dom/vitest'
import { beforeEach } from 'vitest'

function memoryStorage(): Storage {
  const values = new Map<string, string>()
  return {
    get length() {
      return values.size
    },
    clear: () => values.clear(),
    getItem: (key) => values.get(key) ?? null,
    key: (index) => [...values.keys()][index] ?? null,
    removeItem: (key) => {
      values.delete(key)
    },
    setItem: (key, value) => {
      values.set(key, String(value))
    },
  }
}

Object.defineProperty(globalThis, 'localStorage', {
  configurable: true,
  value: memoryStorage(),
})
Object.defineProperty(globalThis, 'sessionStorage', {
  configurable: true,
  value: memoryStorage(),
})

beforeEach(() => {
  localStorage.clear()
  sessionStorage.clear()
  window.history.replaceState({}, '', '/')
})