gramps-web/test/api.test.js

import fetchMock from 'fetch-mock/esm/client'
import {expect} from '@open-wc/testing'

import {apiGet} from '../src/api.js'

describe('API', () => {
  beforeEach(() => {
    fetchMock.get('http://myapi:1234/api/my-endpoint', {hello: 'world'})
    fetchMock.post('http://myapi:1234/api/token/', {token: 'world'})
  })

  afterEach(() => {
    fetchMock.restore()
  })

  describe('Test API GET', () => {
    it('API get dummy test', async () => {
      const data = await apiGet(
        'http://myapi:1234',
        null,
        null,
        '/api/my-endpoint'
      )
      expect(fetchMock.called()).to.be.true
      expect(data).to.eql({hello: 'world'})
    })
  })
})