nock-sample.js

// Some setup code omitted for brevity
nock('https://our-backend-service.opower.it')
    .post('/endpoint/we/depend/on')
        // Make your test more interesting by declaring which headers you care about
        // Nock lets you declare matchers on many aspects of the request
        .matchHeader('Content-type', 'application/json')
        .reply(200, function(uri, requestBody) {
            t.deepEqual(
                requestBody, 
                expectedRequestBody, 
                'request is made with the right body'
            );
            return theResponseWeExpect;
        });

let response = yield request.get('https://localhost:3000/ei/x/demo'),
    navText = getNavText(response),
    expectedNavEntryItems = [
        'Home',
        'Demo',
        'My Energy Use',
        'My Plan',
        'Ways to Save'
    ];

t.equal(
    navText.length, 
    expectedNavEntryItems.length, 
    'has the right number of nav entries'
);
t.deepEqual(navText, expectedNavEntryItems, 'has the right nav on the page');