Testing on project with @t3-oss/env using vitest

//  src/utils/testedfn.ts
import { env } from "@/env.mjs"
export const getmyenv = () => {
    return env.DISCORD_CLIENT_ID;
}

// __test__/utils/testedfn.test.ts
import { env } from '@/env.mjs';
import { describe, it, expect } from 'vitest';

describe("test server env access", () => {
    it("env discord is acessible", () => {
        expect(env.DISCORD_CLIENT_ID).toBeDefined();
    });
});

 FAIL  __test__/utils/testedfn.test.ts > test server env access > env discord is acessible
Error: ❌ Attempted to access a server-side environment variable on the client
 ❯ onInvalidAccess node_modules/@t3-oss/core/index.ts:134:13
 ❯ Object.get node_modules/@t3-oss/core/index.ts:147:16
 ❯ __test__/utils/testedfn.test.ts:7:20
      5| 
      6|     it("env discord is acessible", () => {
      7|         expect(env.DISCORD_CLIENT_ID).toBeDefined();
       |                    ^
      8|     })
      9| })