18F/identity-idp

import getConfigValue from './get-config-value';
import type { Config } from './get-config-value';

describe('getConfigValue', () => {
  context('with page config element absent', () => {
    it('returns undefined', () => {
      expect(getConfigValue('appName')).to.be.undefined();
      expect(getConfigValue('analyticsEndpoint')).to.be.undefined();
    });
  });

  context('with page config element present', () => {
    const APP_NAME = 'app';
    const ANALYTICS_ENDPOINT = 'url';

    beforeEach(() => {
      const config = document.createElement('script');
      config.type = 'application/json';
      config.setAttribute('data-config', '');
      config.textContent = JSON.stringify({
        appName: APP_NAME,
        analyticsEndpoint: ANALYTICS_ENDPOINT,
      } as Config);
      document.body.appendChild(config);
    });

    it('returns the config value corresponding to the given key', () => {
      expect(getConfigValue('appName')).to.equal(APP_NAME);
      expect(getConfigValue('analyticsEndpoint')).to.equal(ANALYTICS_ENDPOINT);
    });
  });
});