getSpecies.spec.ts

import { contentfulDeliveryClient } from './contentful';

import getSpecies from './getSpecies';

jest.mock('./flattenAssetFields', () => ({
  flattenImageAssetFields: jest.fn((item) => item),
  flattenVideoAssetFields: jest.fn((item) => item),
}));

jest.mock('./contentful', () => ({
  contentfulDeliveryClient: {
    getEntries: jest.fn(),
  },
}));

const mockedEntryFields = {
  name: 'test name',
  slug: 'test-slug',
  order: 'test order',
  suborder: 'test suborder',
  family: 'test family',
  genus: 'test genus',
  species: 'test species',
  content: 'test content',
  description: 'test description',
  image: 'test image',
};

afterEach(() => {
  jest.clearAllMocks();
});

it('Returns species with all properties', async () => {
  (contentfulDeliveryClient.getEntries as jest.Mock)
    .mockImplementation(() => ({
      items: [{
        fields: {
          ...mockedEntryFields,
          subfamily: 'test subfamily',
        },
      }],
    }));

  const result = await getSpecies();

  expect(contentfulDeliveryClient.getEntries).toHaveBeenCalledTimes(1);
  expect(contentfulDeliveryClient.getEntries).toHaveBeenNthCalledWith(1, {
    content_type: 'speciesPage',
    order: ['fields.name'],
    limit: 1000,
  });

  expect(result).toStrictEqual([{
    ...mockedEntryFields,
    subfamily: 'test subfamily',
  }]);
});

it('Returns species with missing properties', async () => {
  (contentfulDeliveryClient.getEntries as jest.Mock)
    .mockImplementation(() => ({
      items: [{
        fields: mockedEntryFields,
      }],
    }));

  const result = await getSpecies();

  expect(result).toStrictEqual([{
    ...mockedEntryFields,
    subfamily: null,
  }]);
});