import { describe, expect, it } from 'vitest';
import { z } from 'zod';
import { loadEnv } from '../../../src/core/config/env';

describe('loadEnv', () => {
  const schema = z.object({
    FOO: z.string(),
    COUNT: z.coerce.number().default(5),
  });

  it('parses matching env vars into a typed object', () => {
    const result = loadEnv(schema, { FOO: 'bar', COUNT: '10' });
    expect(result).toEqual({ FOO: 'bar', COUNT: 10 });
  });

  it('throws a descriptive error when required vars are missing', () => {
    expect(() => loadEnv(schema, {})).toThrow(/Invalid environment configuration/);
  });
});