testing-async-await.test.js

/* src/__tests__/helpers/index.test.js */
import { isEarlierThanNow, fetchFakeAPIData } from '../../helpers';

//...

test('fetchFakeAPIData, when requesting an animal, responds with a dog', async () => {
  // Arrange 
  const testRequest = { animal: true };

  // Act
  const { animal, name } = await fetchFakeAPIData(testRequest);

  // Assert
  expect(animal).toBe('Dog');
  expect(name).toBe('Charlie');
});

test('fetchFakeAPIData, when not requesting an animal, responds with an error message', async () => {
  // Arrange 
  const testRequest = { random: true };

  // Act
  try {
    await fetchFakeAPIData(testRequest);
  } catch ({ error }) {
    // Assert  
    expect(error).toMatch(/Did not find species/i);
  }
})