cadence-web/server/router/services/domain-service/helpers/fetch-domain-list-next-page.spec.js

Cadence Web UI

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import { delay } from '../../../helpers';
import fetchDomainListNextPage from './fetch-domain-list-next-page';

jest.mock('../../../helpers', () => ({
  delay: jest.fn(),
}));

describe('fetchDomainListNextPage', () => {
  const getMockContext = domainResponse => {
    const ctx = {
      cadence: {
        listDomains: jest.fn().mockImplementation(() => domainResponse),
      },
    };

    return ctx;
  };

  describe('when no nextPageToken returned', () => {
    it('should return domainList.', async () => {
      const domains = ['domain1', 'domain2'];
      const domainResponse = {
        domains,
        nextPageToken: null,
      };

      const ctx = getMockContext(domainResponse);

      const domainList = await fetchDomainListNextPage({
        ctx,
      });

      expect(domainList).toEqual(domains);
    });
  });

  describe('when nextPageToken is returned', () => {
    it('should call delay and should call itself again to get next domain list page.', async () => {
      const nextPageToken = '1234';
      const domains1 = ['domain1', 'domain2'];
      const domains2 = ['domain3', 'domain4'];
      const domainResponse = {
        domains: domains1,
        nextPageToken,
      };

      const ctx = getMockContext(domainResponse);

      delay.mockImplementation(() => {
        domainResponse.domains = domains2;
        domainResponse.nextPageToken = null;
      });

      const domainList = await fetchDomainListNextPage({
        ctx,
      });

      expect(domainList).toEqual([...domains1, ...domains2]);
    });
  });
});