Angular Workshop_Sarajevo2

Angular Workshop
CHRISTOFFER NORING, TOPTAL IN CORPORATION WITH SOFTHOUSE

History
Developed in 2009, Misko Hevery Google, Adam Abrons at Brat Tech LLC
Abrons left enter Igor Minar, Vojita Jina
Google Web Toolkit was too damn slow to work with. Enter GetAngular
Sponsored by Google
Current version 1.4.1 , The are working on angular 2.0 as well using ecmascript 6

Your first app
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title></title>
</head>
<body ng-app>
{{ 2+2 }}
<script src="angular.js"></script>
</body>
</html>
ng-app
Creates an application context

Bootstrap with a module
<body ng-app="app">
{{ 2+2 }}
<script src="app.js"></script>
</body>
// simple app.js
angular.module('app', []);
// advanced – app.js
angular.module('app', [
'dependency1',
'dependency2',
'dependency3',
'dependency4‘
]);

Add a controller
<body ng-app="app">
<div ng-controller="personController">
<h1>{{ title }}</h1>
<fieldset>
{{ person.name }}
{{ person.address }}
</fieldset>
</div>
</body>
angular
.module('app', [])
.controller('personController', function ($scope) {
$scope.title = "A person view";
$scope.person = {
name : 'John Doe',
address : 'Unknown'
}
});
Controller context

Interacting - the view
ng-click, calls a callback on your scope
ng-repeat loops out an array
on your scope
ng-model, creates a two-way binding
between view and controller
<body ng-app="app">
<div ng-controller="personController">
<h1>{{ title }}</h1>
<fieldset>
<p>
<input type="text" ng-model="person.name" placeholder="name" />
</p>
<p>
<input type="text" ng-model="person.address" placeholder="address" />
</p>
<p>
<input type="text" ng-model="person.age" />
</p>
</fieldset>
<button ng-click="save()">Save</button>
<ul ng-show="errors.length > 0">
<li ng-repeat="error in errors">
{{ error }}
</li>
</ul>
</div>
ng-show, boolean expression that
shows or hides your element

Interacting – changing data
<fieldset>
<p>
<input type="text" ng-model="person.name" placeholder="name" />
</p>
<p>
<input type="text" ng-model="person.address" placeholder="address" />
</p>
<p>
<input type="text" ng-model="person.age" />
</p>
</fieldset>
angular
.module('app', [])
$scope.person = {
name : 'John Doe',
address : 'Unknown',
age : 0
}
Change this
Change reflected here

Interacting – saving…
<button ng-click="save()">Save</button> angular
.module('app', [])
$scope.person = {
name : 'John Doe',
address : 'Unknown',
age : 0
}
$scope.save = function (){
if (getErrors().length === 0) {
console.log('send data to backend');
} else {
console.log('has validation errors');
}

Interacting - boolean + loop
<ul ng-show="errors.length > 0">
<li ng-repeat="error in errors">
{{ error }}
</li>
</ul>
function getErrors(){
var errors = [];
if (person.name === '') {
errors.push('first name missing');
}
if (person.lastname === '') {
errors.push('last name missing');
}
if (person.age < 18) {
errors.push('must be 18 or over');
}
return errors;
}
$scope.errors = [];
}

What else can a module do
Factory
Service
Provider
Filter
Config – you wire up routing etc here..
Value - happens after config
Constant - happens first

Dependency injection
angular
.module('app')
.controller('ctrl', function($scope, personService, Product, constantValue){
})
Type the name of it and angular will look in its core for a definition and
Inject it
angular
.module('app')
.controller('ctrl',[
'$scope',
'personService',
'Product',
'constantValue',
function($scope, personService, Product, constantValue){
// do stuff
}])
Minification safe

Factory – acting as a service
- The factory is a method on the module
- Its a singleton
- You should return something from it
angular
.module('app', [])
.factory('mathFactory', function () {
return {
add : function (lhs, rhs) {
return lhs+ rhs
}
}
}) Returning an object literal
angular
.module('app', [])
.controller('personController', function ($scope, mathFactory) {
mathFactory.add(2,2) // outputs 4
}

Factory – acting as model factory
angular
.module('app', [])
.factory('User', function () {
function User(dto){
this.firstName = dto.firstname;
this.lastName = dto.lastname;
this.age = dto.age;
}
User.prototype.getFullName = function() {
this.firstname + " " + this.lastname;
}
User.prototype.canVote = function (){
return this.age > 18;
}
return User;
})
Constructor method angular
.module('app', [])
.factory('userService', function ($http, User) {
var getData = function (){
// get users from backend
var usersFromBackend = [];
var users = [];
usersFromBackend.forEach(function (userDto) {
users.push(new User(usersDto));
});
return users;
}
return {
getUsers : getData
};
});

Service
angular
.module('app')
.service('dateService', function () {
this.getHolidays = function () {
// code
};
this.getWorkingDays = function () {
// code
};
})
angular
.module('app')
.controller('anyController', function ($scope, dateService) {
$scope.dates = dateService.getHolidays();
});

Filter – formatting
1) Format data
$scope.val = 1140,123567
{{ val | number : 0 }}
// 1,140 thousand separator
{{ val | number : 4 }}
// 1,140.1236 rounded up and 4 decimals
1b) Format data – custom filter
angular
.module('app')
.filter('prefixed', function () {
return function (val) {
return "#" + val;
}
})
Usage
$scope.prefixThis = ’hello’;
<p>
{{ prefixThis | prefixed }}
</p>
// ’#hello’

Filtering
2) Select a subset from a list – non specific
{ { filter_expression | filter : expression : comparator} }
<input type="text" ng-model="filterByName" />
<div ng-repeat="user in users | filter:'filterByName'">
{{ user.name }}
</div>

<input type="text" ng-model="search.name" />
<table >
<tr><th>Name</th><th>Phone</th></tr>
<tr ng-repeat="friendObj in friends | filter:search:strict">
<td>{{friendObj.name}}</td>
<td>{{friendObj.phone}}</td>
</tr>
</table>
2b) Select a subset from a list –specific
2c) orderBy filter
<div ng-repeat="item in items | orderBy: '+name' ">
{{item}}
</div>
<div ng-repeat="item in items | orderBy: scopeProperty ">
{{item}}
</div>
Filter by item.name
Filter by a property on the scope
+- sort order

Routing
angular
.module('app')
.config(function ($routeProvider) {
$routeProvider
.when('/Home', {
templateUrl : 'partials/home.html',
controller : 'homeController'
})
.when('/About', {
templateUrl : 'partials/home.html',
controller : 'homeController'
})
})
<ul class="menu">
<li>
<a href="#Home">Home</a>
</li>
<li>
<a href="#About">About</a>
</li>
</ul>
<div ng-view>

</div>

Routing - wildcard
$routeProvider
.when('/Products', {
templateUrl : 'partials/products.html',
controller : 'productsController'
})
.when('/Products/:id', {
templateUrl : 'partials/productsDetail.html',
controller : 'productsDetailController'
})
angular
.module('app')
.controller('productsDetailController', function ($scope, $routeParams) {
productService.loadProductDetail( $routeParams.id ).then(function (result) {
$scope.product = result.data;
})
})

Routing – no matches
angular
.module('app')
.config(function ($routeProvider) {
$routeProvider
.when('/Products', {
templateUrl : 'partials/products.html',
controller : 'productsController'
})
.when('/Products/:id', {
templateUrl : 'partials/productsDetail.html',
controller : 'productsDetailController'
})
.otherwise({
redirectTo : routes.home.route
});
})
.otherwise({
controller : ’notFoundController’,
temlateUrl : ’notFound.html’
});
Or render a route not found page
Redirect to a known route

Routing - $location and params
Location Query parameters
www.domain.com/#/Products/1?page=2
1st way :
Inject $routeParams, (given route Products/:id )
$routeParams.id = 1, $routeParams.page = 2
2nd way:
$location.search()
returns { page : 2 }
so $location.search()[’page’] returns 2
var currentPath = $location.path(); // get current route
$location.path("/Home"); //setting the current route

Backend , $http, caching, promises
$http.delete('/Products/1’, ,<optional header>)
Base backend call
$http(object).then(function (result) {
$scope.products = result.data;
})
Short hand versions
$http.post('/Products’,data, ,<optional header>)
$http.put('/Products’,data, ,<optional header>)
$http.get('/Products’,<optional header>)
And also head, jsonp, patch etc..
$httpProvider.defaults.headers.common
Header common for all requests
$httpProvider.defaults.headers.post
$httpProvider.defaults.headers.put
$httpProvider.defaults.headers.get
Per verb
Cached call
$http.get(url, { cache: true }).then(...);

Backend $http
$http.get('/Products’).then(function(result){
});
.success(function(result){
});
.error(function(result){
});
Success fetching data
Error fetching data
$http.<something> returns a promise
An object that will deliver its data sometime
in the future, it promises 

Backend promise – resolve / reject
$q is used to create promises and also to resolve/ reject promises
function getData(value){
var deferred = $q.defer();
if (value > 5) {
deferred.resolve("higher than five");
} else {
deferred.reject("boo too low");
}
return deferred.promise;
}
function callData(){
getData(6).then(function (result) {
console.log(result); // returns 'higher than five'
});
getData(1).then(function (result) {
// never comes here
}, function (error) {
console.log(error); // returns 'boo too low'
});
}

Backend promise, wait for all
function longRunningService() {
$timeout(function () {
deferred.resolve('long');
}, 4000);
}
function shortRunningService() {
$timeout(function () {
deferred.resolve('short');
}, 1000);
}
function call() {
return $q.all([shortRunningService(), longRunningService()]).then(results) {
// 4 seconds later results[0] and results[1] populated
} ;
}

Backend promise, hiearchical call
function validateRequestIsAuthenticated() {
deferred.resolve('a');
}
function validateParameters() {
deferred.resolve('b');
}
function loginUser() {
deferred.resolve('c');
}
function getProducts() {
deferred.resolve('d');
}
function call() {
return validateRequestIsAuthenticated()
.then(getCustomer().then(function(customer){
getProductsByCustomer(customer.id)
}))
.then(loginUser)
.then(getProducts)
.then(function (products) {
return products;
}, function (error) {
// something failed with one of our calls
});
}
One place to handle
error from any of the
above
Calls in order

Interceptors
http interceptors can be applied to request and response and on success and error respectively
So when is a good time to use it?
- Handle all incoming error responses, route to error page
- All outgoing requests should have a custom header
And other things you can think of that should happen on a global level for all requests / responses
- Read data from cache if application seems to be offline

Interceptor – set a custom header on all
requests
.factory('authService', function() {
return {
isLoggedIn : function () {
return true;
},
token : 'aToken'
};
})
.factory('customHeaderInjector', function(authService) {
return {
request : function (config) {
if (authService.isLoggedIn()) {
config.headers['Authentication'] = authService.token;
}
return config;
}
}
})

Interceptor, handle error response
.factory('errorHandlerInterceptor', function($location) {
return {
responseError : function (errorResponse) {
if (errorResponse.status === 401) {
$location.path('/PageNotFound');
} else if (errorResponse.status >= 500) {
$location.path('/ServerError');
} else {
$location.path('/Error');
}
}
};
});
Redirect to correct error route

Watch
When a scope property has change and you want to know about it
$scope.personName = 'Zlatan';
$scope.save = function(val){
$scope.personName = val;
}
$scope.$watch('personName', function(newValue, oldValue){
});
$scope.person = {
name : 'Zlatan',
age : 33
};
$scope.save = function(val){
$scope.person = val;
}
$scope.$watch('person', function(newValue, oldValue){
},true);
True, look at the whole object hierarchy

Events,
$broadcast Sends event downwards, from current scope = > child scopes..
$emit
Sends event upwards, from current scope = > parent scope
<div ng-app="app">
<div ng-controller="appController">
{{ propertyFromAppController }}
<div ng-controller="childController">
{{ propertyFromChildController }}
</div>
</div>
</div>
$broadcast
$emit

Events – two controllers talking
parent => child $scope.$broadcast(’kids – sit still in the car’, data)
child => parent $scope.$emit(’mommy – are we there yet’,data)
sibling => sibling $rootScope.$emit(’event’, data) listeners are other $rootScope.$on(’event’)
Madman $rootScope.$broadcast(’telling the whole world – the end is near, repent’,data)
Best!

Events – code example
.factory('eventService', function($rootScope) {
return {
publish : function (eventName, data) {
$rootScope.$emit(eventName, data);
},
subscribe : function (eventName, callback) {
$rootScope.$on(eventName, callback);
}
}
})
.controller('appController', function($scope, eventService){
$scope.send = function(){
eventService.publish('app_event',{ data : 'data from app controller' });
};
.controller('firstController', function($scope, eventService){
eventService.subscribe('app_event', function(event, data){
$scope.appMessage = data.data;
})
Publish to whoever listens to that eventHelper
Keep track on namespaces for events and be careful, don’t spam 

Lab
Shopping cart backend
What can we cache

Directives - intro
The main idea is to
- clean up html
and also to
- create reusable parts aka ”user controls”.
Directives can be applied on different levels
- as its own element
- as an attribute on an existing element, also called decorating directive
- on css level
- on a comment
I will be covering the two first ones Element + Attribute

Directives – most concepts
angular
.module('app')
.directive('someDirective', function () {
return {
restrict : 'E',
// E= element,A = attribute,C= css class, M = comment, what this directive can be applied to
replace : true, // whether to let template replace element tag or keep element tag
scope : true, // true = new scope that inherits, false = parent scope, {} = new + no inheritance
template : ’<h1>{{title}}</h1>', // or templateUrl
controller : function ($scope) { },
link : function (scope, element, attributes) { }
}

Directives – simple directive
angular
.module('app')
.directive('applicationHeader', function () {
return {
restrict : 'E',
scope : true,
replace : true,
template : '<h1>{{title}}</h1>’
controller : function($scope){ $scope.$parent; $scope.a
}
}
})
<div ng-app="app">
<application-header></application-header>
<div ng-view></div>
</div>
</div>
angular
.module('app')
.controller('appController', function ($scope) {
$scope.title = 'My Application';
})
appController.js
Controller and directive shares scope

Directive - Info card
angular
.module('app')
.directive('infoCard', function () {
return {
restrict : 'E',
scope : false,
replace : true,
template : '<div>'+
'<h1>{ { title }}</h1>'+
'<p><input type="text" ng-model="info" /></p>'+
'</div>'
}
})
You can do this, but
Change one, change all!!
Probably not what you wanted
<div ng-app="app">
<info-card></info-card>
<div ng-view></div>
</div>
</div>
angular
.module('app')
.controller('appController', function ($scope) {
$scope.title = 'My Application';
$scope.content = '';
})
Content is from controller so it is shared
between all instances

Directive – a better info card
angular
.module('app')
.directive('infoCardImproved', function () {
return {
replace : true,
restrict : 'E',
template : '<div class="info-card-improved">' +
'<h2>{{title}}</h2>' +
'<p><input type="text" ng-model="text" /></p>'
+ '</div>',
scope : true,
controller : function ($scope) {
$scope.text = 'empty text';
$scope.title = 'infoCardImproved';
}
}
})
<div ng-app="app">
<info-card-improved></info-card-improved>
<div ng-view></div>
</div>
</div>
This works as intended 

Directive , isolated scope
angular
.module('app')
.directive('isolatedDirectiveValue', function () {
return {
restrict : 'E',
replace : true,
scope : {
title : '@',
description : '@'
},
template : '<div><h2>{{title}}</h2><p>{{description}}</p></div>',
}
}
});
The scope is isloated in that it points to an object
scope : {}
Instead of false/true

Directive, isolated binding types
An isolated scope has its own scope but it can also communicate with data being binded to it
scope : {
title : '@',
description : '@'
}
Binding to static value <directive-name title="a value" description="a description value" ></directive-name>
Binding to a scope property
scope : {
title : '=',
description : '=’
}
<directive-name title="scopeProperty" description="scopePropertyDesc"></directive-name>
scope : {
updated : ’&',
}
Binding to a scope callback <directive-name changed="onUpdatedCallback" ></directive-name>

Directive, isolated callback
angular
.module('app')
.directive('dayBrowser', function () {
return {
replace : true,
restrict : 'E',
scope : {
dayChanged : '&'
},
templateUrl : 'directives/dayBrowser/dayBrowser.html',
link : function (scope, element, attrs) {
scope.day = new Date();
function addDays(currentDate, days) {
var newDate = new Date(currentDate);
newDate.setDate(currentDate.getDate() + days);
return newDate;
} ;
scope.incrementDate = function (val) {
scope.day = addDays(scope.day, val);
scope.dayChanged({ date : scope.day, a : 1 });
};
}
};
});
Bind to callback with &
Create an object literal with a named property
<day-browser day-changed="changed(date, a)"></day-browser>
Signatur needs to match
date,a

Directive, child and parent directive
Typical scenarios are tab and tabitems, day vs calender
Parent need to talk to a child, and vice versa
<tabs>
<tab></tab>
<tab></tab>
<tab></tab>
</tabs>
Parent directive
Child directives
Behaviour :
Expand one tab, close the others,
like an accordion

Directive, the parent
angular
.module('app')
.directive('tabs', function () {
return {
restrict : 'E',
replace: true,
var tabs = [];
this.addTab = function (tab) {
tabs.push(tab);
};
this.expand = function (tab) {
tabs.forEach(function (tab) {
tab.collapse = true;
});
$scope.$apply(function () {
tab.collapse = false;
});
};
}
};
});
Functions we want the child directives to call
WAIT, we are putting the functions on this, instead of $scope
Thats how angular wants it – deal with it 

Directive, the child
angular
.module('app')
.directive('tab', function () {
return {
restrict : 'E',
replace: true,
scope : {
},
require: '^tabs',
template : '<div class="tab"><h1>tab header</h1><div ng-
hide="collapse" class="body">tab content</div></div>',
link : function (scope, element, attributes, tabs) {
scope.collapse = true;
tabs.addTab(scope);
element.on('click', function () {
var oldValue = scope.collapse;
scope.collapse = !oldValue;
if (!scope.collapse){
tabs.expand(scope);
}
});
}
}
});
Angular is walking the dom looking for the controller

Directives – decorative (attribute)
angular
.module('app')
.directive('expanderDirective', function() {
return {
link : function (scope, element, attributes) {
var bodyElem = element.find('.body');
var visibleBody = true;
element.on('click', function () {
scope.$apply(function () {
if (visibleBody) {
bodyElem.hide();
} else {
bodyElem.show();
}
visibleBody = !visibleBody;
});
});
}
}
});
<script src="bower_components/jquery/dist/jquery.js"></script>1
2 <script src="bower_components/angular/angular.js"></script>
<div expander-directive>
<div class="header">
header
</div>
<div class="body">
body text
</div>
</div>
Usage
Call $apply, when outside of angulars world
Reference jquery if you need
more power than jquery lite

Lab - directives
Cleanup - Page with left menu, product page, products on sale

Testing- install
http://karma-runner.github.io/0.8/intro/installation.html
npm install karma –g
karma init // to generate a karma.conf.js file
npm init // to create a package.json, if you need to install runners for firefox/phantomjs etc

Testing – setup config file
When you did karma init it created a config file.
files : {} // this is where you tell karma to find your application and your tests
frameworks: ['jasmine'] // for now it is jasmine could be qunit or something else
reporters: ['progress'] // this is where you specify things that can show you things like coverage

Testing – setup a test
1
2
3
Point to app and tests in config
Define test
Perform call
Assert4
files: [
'app/**/*.js*/',
'specs/**/*.js*/'
]
describe('given a calculator', function(){
var Calculator;
it('verify that addition works', function(){
var actual = Calculator.add(1,1)
expect().toBe(2);
});

Testing – setup an angular test
1
2
3
Import module and possible dependant modules
Import definition
Perform call
Assert4
files: [
'bower_components/angular/angular.js',
'bower_components/angular-mocks/angular-mocks.js',
'app/**/*.js',
'specs/**/*.js'
]
0 Point to 1) angular + angular-mocks, 2 ) to app 3) tests
//load module
beforeEach(module('services'));
//load definition
beforeEach(inject(function(_Calculator_) {
Calculator = _Calculator_;
}));
it('verify that addition works', function(){
var actual = Calculator.add(1,1);
expect(actual).toBe(2);
});

Testing – angular test with dependency
describe('given a user service', function(){
var UserService;
//load modules
beforeEach(module('models'));
//load definition
beforeEach(inject(function(_userService_) {
UserService = _userService_;
}));
it('test parse', function(){
});
})
angular
.module('services')
.factory('userService', function(User, $http){
var that = {};
that.doStuff = function(){
};
that.get = function(){
return $http.get('/users/1');
};
return that;
});

Testing with a $http / promise
You DON’T want to go against the real backend so use $httpBackend, built in mockObject that intercepts $http
$httpBackend.whenGET(’someUrl’).respond(fakeData)
Also because $http calls returns a promise we need to call $httpBackend.flush() to resolve promises
Assume we have the following scenario:
userController => userService.getUser() => $http.get(’/users/1’);
In a test
$httpBackend.respond({ name : ’Zlatan’ })
Mock response

Testing a controller and a promise
describe('given a UserController', function(){
var UserController,
$scope,
ctrl,
$httpMock;
//load modules
beforeEach(module('models'));
beforeEach(module('controllers'));
//load definition
beforeEach(inject(function($controller, $rootScope, $httpBackend){
$httpMock = $httpBackend;
$httpMock.expectGET('/users/1').respond({ name : 'Zlatan' });
$scope = $rootScope.$new();
ctrl = $controller('userController', { $scope: $scope });
}));
it('verify I can get a user', function(){
$scope.load();
$httpMock.flush();
expect($scope.user.name).toBe('Zlatan');
});
})
Instruct $http mock to intercept
Construct controller
Resolve promises
Needed to create a new scope

Testing - mocking
describe('given a mathService', function(){
var Service;
beforeEach(function(){
module(function($provide){
$provide.factory('Calculator', function (){
return {
add : function(){
return 1+1;
}
};
});
});
});
beforeEach(inject(function(_mathService_) {
Service = _mathService_;
}));
it('verify that mathService add works', function(){
expect(Service.add(2,2)).toBe(4);
})
})
angular
.module('services')
.factory('mathService', function(Calculator){
var that = {};
that.add = function(lhs,rhs){
return Calculator.add(lhs,rhs);
};
that.sub = function(lhs,rhs){
return Calculator.sub(lhs,rhs);
};
return that;
});
Calculator
is replaced,
with a mock

Lab, setup config, write a test
Install karma
Try creating a test, try creating a test for an angular application

Task runners grunt / gulp
What problem do they solve?
During development, what do you need
On change:
jshint
Unit test
For deploy, what do you need to do
Uglify, js
Minify js
Compress js, css, html

Gulp
4 apis
gulp.task , defines a task, with gulp your run tasks
gulp.src ,points out one or several files
gulp.dest, points out a destination
gulp.watch, watches files for changes, reacts on save and then performs what you instructed it

Gulp - install
npm install gulp –g
npm install –save-dev
Create a Gulpfile.js

Gulp, first task
gulp.task('copy', function(){
return gulp
.src('./copyfromhere/*.txt')
.pipe(gulp.dest('./tohere/'));
});
From where and which files
Copy to destination dir, pipe is so that
we keep working on the same stream,
no temp files like grunt
gulp copy //to run

Gulp - dependencies
gulp.task('default',['thenme'],function(){
console.log('running default...');
})
gulp.task('thenme', ['mefirst'], function(){
console.log('then me');
});
gulp.task('mefirst', function(){
console.log('me first');
});
[’task’] dependency, this is run before
The specified task
So mefirst then thenme and lastly default
default task doesn’t need to be specified
just run
gulp

Gulp - Building a deploy task
- We want to create as small of a foot print as possible, one or a few js-files, uglified
For js
◦ Concatenate into one or a few js files
◦ For angular, run ng-min to ensure names are preserved on dependencies
◦ Uglify, i.e compress, remove whitespace etc..
For css,
◦ run preprocessors like sass/less
◦ Concatenate
◦ Uglify

Gulp – deploy task code
gulp.task('build',[], function(){
console.log('running build..');
return gulp
.src('./app/**/*.js')
.pipe(concat('all.js'))
.pipe(uglify())
.pipe(gulp.dest('./dest/'));
});
Concatenate
Uglify
Place in dest folder
Depending on how complex your app is
This task might grow if you have many modules

Gulp – Building a monitor task
Well before checking in code we want to know if
- unit tests are green
- no problems with hint/lint
For this we can use a watch task, watch is part of gulp api

Gulp – monitor task code
gulp.task('watch',function(){
gulp.watch(['app/**/*.js','test/**/*.js'], ['lint','test']);
});
gulp.task('test', function() {
gulp.src(testFiles)
.pipe(karma({
configFile: 'karma.conf.js'
}));
});
gulp.task('lint', function(){
console.log('linting...');
return gulp
.src(['./app/**/*.js','./test/**/*.js'])
.pipe(jshint())
.pipe(jshint.reporter('default'));
});
Run tests
Run jshint
On file change (and save) run

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