exports.config = {
      // other stuff
      onPrepare: function() {
        // other stuff
        require('protractor-fake-backend').config = {
          mocksDir: 'path/to/mocks/directory', // default 'mocks'
          defaultMocks: ['some/mock', 'another/**', {request:{}, response:{}}] // default []
        };
      }
    }

    module.exports = {
      request: {
        path: '/the/path',
        method: 'GET'
      },
      response: {
        data: 'bla'
      }
    }

    module.exports = [
      {
        // first mock
      }, {
        // second mock
      }
    ]

{
  request: {
    path: '/must/start/with/a/slash',
    method: 'POST',
    data: 'request body',
    headers: {
      first: 1,
      second: 'bla'
    },
    params: {
      first: 1,
      second: 'woo'
    }
  },
  response: {
    status: 200,
    data: 'bla',
    headers: {
      first: 1,
      second: 'two'
    }
  }
}

var fakeBackend = require('protractor-fake-backend');
var page = require('your/page/object');

describe('your test', function() {
  beforeAll(function() {
    fakeBackend(['first/file', 'second/file']);
    page.get();
  });

  it('check the last request', function() {
    var expectation = {
          path: '/the/path',
          method: 'POST',
          body: 'request body'
        };

    fakeBackend.clearRequests();

    page.someButton.click();

    fakeBackend.getLastRequest().then(function(request) {
      expect(request).toEqual(expectation);
    });
  });
});