config.test.ts

import { describe, expect, it } from 'vitest';
import { ConfigError, loadApiBaseUrl, loadAuthConfig } from '../src/lib/config';

const FULL_ENV = {
  PUBLIC_COGNITO_DOMAIN: 'openjobradar-dev.auth.us-east-1.amazoncognito.com',
  PUBLIC_COGNITO_CLIENT_ID: 'client-abc',
  PUBLIC_REDIRECT_URI: 'http://localhost:4321/callback',
  PUBLIC_LOGOUT_URI: 'http://localhost:4321/',
  PUBLIC_API_BASE_URL: 'https://api.example.com',
} as const;

describe('loadAuthConfig', () => {
  it('maps every PUBLIC_ env var to the AuthConfig shape', () => {
    const config = loadAuthConfig(FULL_ENV);
    expect(config).toEqual({
      domain: FULL_ENV.PUBLIC_COGNITO_DOMAIN,
      clientId: FULL_ENV.PUBLIC_COGNITO_CLIENT_ID,
      redirectUri: FULL_ENV.PUBLIC_REDIRECT_URI,
      logoutUri: FULL_ENV.PUBLIC_LOGOUT_URI,
    });
  });

  it.each(['PUBLIC_COGNITO_DOMAIN', 'PUBLIC_COGNITO_CLIENT_ID', 'PUBLIC_REDIRECT_URI', 'PUBLIC_LOGOUT_URI'] as const)(
    'fails loudly, not silently, when %s is missing',
    (missingKey) => {
      const env = { ...FULL_ENV, [missingKey]: '' };
      expect(() => loadAuthConfig(env)).toThrow(ConfigError);
      expect(() => loadAuthConfig(env)).toThrow(new RegExp(missingKey));
    },
  );
});

describe('loadApiBaseUrl', () => {
  it('strips a trailing slash', () => {
    expect(loadApiBaseUrl({ ...FULL_ENV, PUBLIC_API_BASE_URL: 'https://api.example.com/' })).toBe(
      'https://api.example.com',
    );
  });

  it('fails loudly when missing', () => {
    expect(() => loadApiBaseUrl({ ...FULL_ENV, PUBLIC_API_BASE_URL: '' })).toThrow(ConfigError);
  });
});