Using $httpBackend to develop an AngularJS frontend using test data before the backend is ready. Be sure to include jSendHttp, angular-sanitize.js, and angular-mocks.js.

api.js

angular
  .module('API', ['testData']) // Remove testData to make real http request
  .factory('UsersAPI', function ($http, $q, $jSendHttp) {
    return {
      getUsers: function (companyId) {
        return $jSendHttp.get('/api/UsersController/getUsers?companyId=' + companyId);
      }
    };
  });

app.js

angular
  .module('users', ['API'])
  .controller('Users_MainCtrl', function ($scope, UsersAPI) {
    var companyId = 123; // get from url, etc.

    $scope.users = {};
    $scope.usersLoaded = false;

    UsersAPI.getUsers(companyId).then(function (data) {
      $scope.users = data;
      $scope.usersLoaded = true;
    });
  });

main.html

<div ng-controller="Users_MainCtrl">
  <div ng-if="usersLoaded">
    <h1>Users</h1>
    <ul>
      <li ng-repeat="user in users">{{ user.id }} - {{ user.name }}</li>
    </ul>
  </div>
</div>

testData.js

// This module will intercept http requests and return test data
angular
  .module('testData', ['ngMockE2E'])
  .run(function ($httpBackend, UserData) {

    function wrapWithJSend (data) {
      return [
        200,
        {
          "status": "success",
          "message": "OK",
          "code": 0,
          "data": data
        }
      ];
    }

    // Add route for each url you want to intercept
    // Can use regex to capture parameters and return different test data for different values
    var routes = {
      'GET': {
        'getUsers': {
          regex: /\/api\/UsersController\/getUsers\?companyId=(\d+)$/,
          cb: function (url) {
            var companyId = url.match(/(\d+)$/)[0];
            return UserData.getUsers(companyId);
          }
        }
      }
    }

    angular.forEach(routes['GET'], function (item, key) {
      $httpBackend.whenGET(item['regex']).respond(function (method, url, data, header) {
        console.log('USING TEST DATA FOR ' + url);
        return wrapWithJSend(item['cb'](url));
      });
    });

     // For everything else, don't mock
    $httpBackend.whenGET(/\/*/).passThrough();
    $httpBackend.whenPOST(/\/*/).passThrough();
  })
  .factory('UserData', function () {
    var company1Users = [
      {
        id: 142,
        name: 'Richard'
      },
      {
        id: 234,
        name: 'John'
      }
    ];

    var company2Users = [
      {
        id: 142,
        name: 'Mike'
      },
      {
        id: 234,
        name: 'Jason'
      }
    ];

    return {
      getUsers: function (companyId) {
        if (companyId == 1) {
          return company1Users;
        } else {
          return company2Users;
        }
      }
    };
});