Failed to resolve import '@...'

[Luciden]

Configure alias '@' in vitest.config

/// <reference types="vitest" />
/* eslint-disable */
import { defineConfig } from 'vitest/config'
import Vue from '@vitejs/plugin-vue'

export default defineConfig({
  plugins: [
    Vue(
      {
        template: {
          compilerOptions: {
            isCustomElement: (tag) => tag.endsWith('-esm') || tag.endsWith('-cmp'),
          }
        }
      }
    ),
  ],
  test: {
    cache: false,
    coverage: {
      provider: 'istanbul',
      thresholds: {
        branches: 70,
        functions: 75,
        lines: 85,
        statements: 85,
      },
      reporter: ['text', 'lcov', 'html'],
      exclude: [
        '**/middleware/*.ts',
        '**/main.ts',
        '**/App.vue',
        '**/features/playground/',
        '**/store/cache/*',
        '**/features/demo/',
        '**/system/service/DevService.ts', /** Dev Only, some paths not reachable in test */
        '**/system/service/Service.ts', /** Abstract/Partial Dev Only */
        '**/helpers/notify.ts', /** Wraps Quasar Notify.Create */
        '**/tests/*',
        '**/*.js'
      ],
    },
    include: ['**/*.test.{js,mjs,cjs,ts,mts,cts,jsx,tsx}'],
    globals: true,
    environment: 'jsdom',
    setupFiles: ['./tests/unit/setup-vite.ts'],
  },
  resolve: {
    alias: {
      '@': '/src',
      "@test": '/tests',
      'GfmTest': '/tests/unit/',
    },
  },
})

Top of test defines imports:

import { mockGet, mockPost } from '@test/unit/GfmMock';
import { flushPromises } from '@vue/test-utils';
import { ManageOEType } from '@/features/oetype/ManageOeType';

No issue with @test but '@' produces the following error:
Failed to resolve import "@/features/oetype/ManageOeType" from "tests/unit/features/org/oetype/ManageOeType.test.ts". Does the file exist?

tsConfig works fine for building:

    "paths": {
      "@/*": ["src/*"],
      "@test/*": ["tests/*"],
      "GfmTest": ["tests/unit/index.ts"],
    },

[Luciden]

If I replace with this then it works:

    alias: {
      '@': 'C:/projects/repos/client/src',

If I replace with this, it does NOT work even thought the console shows the correct path.

    alias: {
      '@': path.resolve(__dirname, '/src'),