EmberJS Testing - Mock network request in test body using Pretender

ember-test-mock-network-request-pretender.js

test('it renders', async function(assert) {
  let server = new Pretender();
  server.get('https://my-api', () => {
    return [200, {}, JSON.stringify({
      items: [
        {
          name: 'jim',
          waffles: 1
        },
        {
          name: 'jane',
          waffles: 2
        },
      ]
    })];
  });

  await render(hbs`{{waffles-component}}`);

  assert.dom('[data-test-id="list-item"]').exists({ count: 2 });
});