Your SlideShare is downloading. ×
  • Like
Testing Rich Client Side Apps with Jasmine
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Now you can save presentations on your phone or tablet

Available for both IPhone and Android

Text the download link to your phone

Standard text messaging rates apply

Testing Rich Client Side Apps with Jasmine

  • 5,024 views
Published

Testing your JavaScript and/or CofffeeScript applications is not nearly as difficult as you think. Learn how to quickly setup Jasmine in your Rails application and start testing your *script …

Testing your JavaScript and/or CofffeeScript applications is not nearly as difficult as you think. Learn how to quickly setup Jasmine in your Rails application and start testing your *script applications now!

Published in Technology
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
5,024
On SlideShare
0
From Embeds
0
Number of Embeds
1

Actions

Shares
Downloads
45
Comments
0
Likes
8

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n
  • \n

Transcript

  • 1. TESTING RICH *SCRIPTAPPLICATIONS WITH RAILS @markbates
  • 2. Finished in 14.41041 seconds108 examples, 0 failures
  • 3. Video demo of a Todo list application goes here.
  • 4. app/models/todo.rbclass Todo < ActiveRecord::Base validates :body, presence: true attr_accessible :body, :completedend
  • 5. spec/models/todo_spec.rbrequire spec_helperdescribe Todo do it "requires a body" do todo = Todo.new todo.should_not be_valid todo.errors[:body].should include("cant be blank") todo.body = "Do something" todo.should be_valid endend
  • 6. app/controllers/todos_controller.rbclass TodosController < ApplicationController respond_to :html, :json def index respond_to do |format| format.html {} format.json do @todos = Todo.order("created_at asc") respond_with @todos end end end def show @todo = Todo.find(params[:id]) respond_with @todo end def create @todo = Todo.create(params[:todo]) respond_with @todo end def update @todo = Todo.find(params[:id]) @todo.update_attributes(params[:todo]) respond_with @todo end def destroy @todo = Todo.find(params[:id]) @todo.destroy respond_with @todo endend
  • 7. spec/controllers/todos_controller_spec.rbrequire spec_helper it "responds with errors" do expect {describe TodosController do post :create, todo: {}, format: json let(:todo) { Factory(:todo) } response.should_not be_successful json = decode_json(response.body) describe index do json.errors.should have(1).error json.errors.body.should include("cant be blank") context "HTML" do }.to_not change(Todo, :count) end it "renders the HTML page" do get :index end response.should render_template(:index) end assigns(:todos).should be_nil end describe update do end context "JSON" do context "JSON" do it "updates a todo" do put :update, id: todo.id, todo: {body: "do something else"}, format: json it "returns JSON for the todos" do get :index, format: "json" response.should be_successful todo.reload response.should_not render_template(:index) todo.body.should eql "do something else" assigns(:todos).should_not be_nil end end it "responds with errors" do end put :update, id: todo.id, todo: {body: ""}, format: json end response.should_not be_successful json = decode_json(response.body) describe show do json.errors.should have(1).error json.errors.body.should include("cant be blank") context "JSON" do end it "returns the todo" do end get :show, id: todo.id, format: json end response.should be_successful response.body.should eql todo.to_json describe destroy do end context "JSON" do end it "destroys the todo" do end todo.should_not be_nil expect { describe create do delete :destroy, id: todo.id, format: JSON }.to change(Todo, :count).by(-1) context "JSON" do end it "creates a new todo" do end expect { post :create, todo: {body: "do something"}, format: json end response.should be_successful end }.to change(Todo, :count).by(1) end
  • 8. app/views/todos/index.html.erb<form class=form-horizontal id=todo_form></form><ul id=todos class="unstyled"></ul><script> $(function() { new OMG.Views.TodosApp(); })</script>
  • 9. SO WHERE’S THE CODE?
  • 10. app/assets/javascripts/views/todo_view.js.coffeeclass OMG.Views.TodoView extends OMG.Views.BaseView tagName: li template: JST[todos/_todo] events: change [name=completed]: completedChecked click .delete: deleteClicked initialize: -> @model.on "change", @render @render() render: => $(@el).html(@template(todo: @model)) if @model.get("completed") is true @$(".todo-body").addClass("completed") @$("[name=completed]").attr("checked", true) return @ completedChecked: (e) => @model.save(completed: $(e.target).attr("checked")?) deleteClicked: (e) => e?.preventDefault() if confirm("Are you sure?") @model.destroy() $(@el).remove()
  • 11. HOW DO WE TEST THIS?
  • 12. CAPYBARA?
  • 13. XCAPYBARA?
  • 14. https://github.com/pivotal/jasmine It’s like RSpec for JavaScript* * or CoffeeScript
  • 15. JavaScript example:describe(panda,function(){ it(is happy,function(){ expect(panda).toBe(happy); });}); CoffeeScript example:describe panda, -> it is happy, -> expect(panda).toBe(happy)
  • 16. MATCHERS• expect(x).toEqual(y) • expect(x).toBeFalsy()• expect(x).toBe(y) • expect(x).toContain(y)• expect(x).toMatch(pattern) • expect(x).toBeLessThan(y)• expect(x).toBeDefined() • expect(x).toBeGreaterThan(y)• expect(x).toBeUndefined() • expect(function() {fn();}).toThrow(e)• expect(x).toBeNull()• expect(x).toBeTruthy()
  • 17. NOT-MATCHERS• expect(x).not.toEqual(y) • expect(x).not.toBeFalsy()• expect(x).not.toBe(y) • expect(x).not.toContain(y)• expect(x).not.toMatch(pattern) • expect(x).not.toBeLessThan(y)• expect(x).not.toBeDefined() • expect(x).not.toBeGreaterThan(y)• expect(x).not.toBeUndefined() • expect(function() {fn();}).not.toThrow(e)• expect(x).not.toBeNull()• expect(x).not.toBeTruthy()
  • 18. JASMINE WITH RAILS• gem evergreen, >= 1.0.0, :require => evergreen/rails• gem capybara-webkit
  • 19. rake spec:javascripts
  • 20. LET’S WRITE A TEST!
  • 21. spec/javascripts/spec_helper.coffee# Require the appropriate asset-pipeline files:require /assets/application.js# Any other testing specific code here...# Custom matchers, etc....beforeEach -> @_page = $(#test)
  • 22. app/assets/javascript/greeter.js.coffeeclass @Greeter constructor: (@name) -> greet: -> "Hi #{@name}"
  • 23. spec/javascripts/greeter_spec.coffeedescribe "Greeter", -> beforeEach -> @greeter = new Greeter("Mark") it "greets someone", -> expect(@greeter.greet()).toEqual("Hi Mark")
  • 24. jasmine-jqueryhttps://github.com/velesin/jasmine-jquery
  • 25. config/environments/development.rbOMG::Application.configure do # ... config.assets.paths << Rails.root.join("spec", "javascripts", "support")end
  • 26. MATCHERS• toBe(jQuerySelector) • toExist()• toBeChecked() • toHaveAttr(attributeName, attributeValue)• toBeEmpty() • toHaveBeenTriggeredOn(selector)• toBeHidden() • toHaveClass(className)• toBeSelected() • toHaveData(key, value)• toBeVisible() • toHaveHtml(string)• toContain(jQuerySelector)
  • 27. spec/javascripts/spec_helper.coffee# Require the appropriate asset-pipeline files:require /assets/application.jsrequire /assets/jasmine.jquery.js# Any other testing specific code here...# Custom matchers, etc....beforeEach -> @_page = $(#test)
  • 28. app/assets/javascripts/views/todo_view.js.coffeeclass OMG.Views.TodoView extends OMG.Views.BaseView tagName: li template: JST[todos/_todo] events: change [name=completed]: completedChecked click .delete: deleteClicked initialize: -> @model.on "change", @render @render() render: => $(@el).html(@template(todo: @model)) if @model.get("completed") is true @$(".todo-body").addClass("completed") @$("[name=completed]").attr("checked", true) return @ completedChecked: (e) => @model.save(completed: $(e.target).attr("checked")?) deleteClicked: (e) => e?.preventDefault() if confirm("Are you sure?") @model.destroy() $(@el).remove()
  • 29. spec/javascripts/views/todos/todo_view_spec.coffeedescribe "OMG.Views.TodoView", -> beforeEach -> @collection = new OMG.Collections.Todos() @model = new OMG.Models.Todo(id: 1, body: "Do something!", completed: false) @view = new OMG.Views.TodoView(model: @model, collection: @collection) @_page.html(@view.el)
  • 30. spec/javascripts/views/todos/todo_view_spec.coffeedescribe "model bindings", -> it "re-renders on change", -> expect($(.todo-body)).toHaveText("Do something!") @model.set(body: "Do something else!") expect($(.todo-body)).toHaveText("Do something else!")
  • 31. spec/javascripts/views/todos/todo_view_spec.coffeedescribe "displaying of todos", -> it "contains the body of the todo", -> expect($(.todo-body)).toHaveText("Do something!") it "is not marked as completed", -> expect($([name=completed])).not.toBeChecked() expect($(.todo-body)).not.toHaveClass("completed") describe "completed todos", -> beforeEach -> @model.set(completed: true) it "is marked as completed", -> expect($([name=completed])).toBeChecked() expect($(.todo-body)).toHaveClass("completed")
  • 32. spec/javascripts/views/todos/todo_view_spec.coffeedescribe "checking the completed checkbox", -> beforeEach -> expect($([name=completed])).not.toBeChecked() $([name=completed]).click() it "marks it as completed", -> expect($([name=completed])).toBeChecked() expect($(.todo-body)).toHaveClass("completed")describe "unchecking the completed checkbox", -> beforeEach -> @model.set(completed: true) expect($([name=completed])).toBeChecked() $([name=completed]).click() it "marks it as not completed", -> expect($([name=completed])).not.toBeChecked() expect($(.todo-body)).not.toHaveClass("completed")
  • 33. app/assets/javascripts/todos/todo_view.coffeeclass OMG.Views.TodoView extends OMG.Views.BaseView # ... deleteClicked: (e) => e?.preventDefault() if confirm("Are you sure?") @model.destroy() $(@el).remove()
  • 34. MATCHERS• expect(x).toHaveBeenCalled()• expect(x).toHaveBeenCalledWith(arguments)• expect(x).not.toHaveBeenCalled()• expect(x).not.toHaveBeenCalledWith(arguments)
  • 35. TRAINING SPIES• spyOn(x, method).andCallThrough()• spyOn(x, method).andReturn(arguments)• spyOn(x, method).andThrow(exception)• spyOn(x, method).andCallFake(function)
  • 36. spec/javascripts/views/todos/todo_view_spec.coffeedescribe "clicking the delete button", -> describe "if confirmed", -> beforeEach -> spyOn(window, "confirm").andReturn(true) it "will remove the todo from the page", -> expect(@_page.html()).toContain($(@view.el).html()) $(".delete").click() expect(@_page.html()).not.toContain($(@view.el).html()) describe "if not confirmed", -> beforeEach -> spyOn(window, "confirm").andReturn(false) it "will not remove the todo from the page", -> expect(@_page.html()).toContain($(@view.el).html()) $(".delete").click() expect(@_page.html()).toContain($(@view.el).html())
  • 37. CUSTOM MATCHERS
  • 38. spec/javascripts/spec_helper.coffee# Require the appropriate asset-pipeline files:require /assets/application.jsrequire /assets/jasmine.jquery.js# Any other testing specific code here...# Custom matchers, etc....beforeEach -> @_page = $(#test) @addMatchers toContainView: (view) -> actual_html = $(@actual).html() view_html = $(view.el).html() @message = -> "Expected #{actual_html} to contain #{view_html}" return @env.contains_(actual_html, view_html)
  • 39. spec/javascripts/views/todos/todo_view_spec.coffeedescribe "clicking the delete button", -> describe "if confirmed", -> beforeEach -> spyOn(window, "confirm").andReturn(true) it "will remove the todo from the page", -> expect(@_page).toContainView(@view) $(".delete").click() expect(@_page).not.toContainView(@view) describe "if not confirmed", -> beforeEach -> spyOn(window, "confirm").andReturn(false) it "will not remove the todo from the page", -> expect(@_page).toContainView(@view) $(".delete").click() expect(@_page).toContainView(@view)
  • 40. WHAT ABOUT AJAX REQUESTS?
  • 41. app/assets/javascripts/views/todos/todo_list_view.js.coffeeclass OMG.Views.TodosListView extends OMG.Views.BaseView el: "#todos" initialize: -> @collection.on "reset", @render @collection.on "add", @renderTodo @collection.fetch() render: => $(@el).html("") @collection.forEach (todo) => @renderTodo(todo) renderTodo: (todo) => view = new OMG.Views.TodoView(model: todo, collection: @collection) $(@el).prepend(view.el)
  • 42. spec/javascripts/views/todos/todo_list_view_spec.coffeedescribe "OMG.Views.TodosListView", -> beforeEach -> @_page.html("<ul id=todos></ul>") @collection = new OMG.Collections.Todos() @view = new OMG.Views.TodosListView(collection: @collection) it "fetches the collection", -> expect(@collection.length).toEqual(2) it "renders the todos from the collection", -> expect($(@view.el).html()).toMatch("Do something!") expect($(@view.el).html()).toMatch("Do something else!") it "renders new todos added to the collection", -> @collection.add(new OMG.Models.Todo(body: "Do another thing!")) expect($(@view.el).html()).toMatch("Do another thing!")
  • 43. rake spec:javascripts...FF........... Failed: OMG.Views.TodosListView fetches the collection. Expected 0 to equal 2. in : Failed: OMG.Views.TodosListView renders the todos from the collection. Expected to match Do something!. in :Finished in 3.12 seconds16 examples, 2 failures
  • 44. jasmine-ajaxhttps://github.com/pivotal/jasmine-ajax
  • 45. spec/javascripts/spec_helper.coffee# Require the appropriate asset-pipeline files:require /assets/application.jsrequire /assets/jasmine.jquery.jsrequire /assets/mock-ajax.jsrequire /assets/mock_responses.js# Any other testing specific code here...# Custom matchers, etc....beforeEach -> @_page = $(#test) @addMatchers toContainView: (view) -> actual_html = $(@actual).html() view_html = $(view.el).html() @message = -> "Expected #{actual_html} to contain #{view_html}" return @env.contains_(actual_html, view_html)
  • 46. 1. DEFINE TEST RESPONSE(S)
  • 47. spec/javascripts/support/mock_responses.coffee@Mocks = todos: todo_1: status: 200 responseText: {"body":"Do something!","completed":false,"id":1} collection: status: 200 responseText: [ {"body":"Do something!","completed":false,"id":1}, {"body":"Do something else!","completed":false,"id":2} ]
  • 48. 2. INSTALL THE MOCK(S)
  • 49. spec/javascripts/views/todos/todo_list_view_spec.coffeedescribe "OMG.Views.TodosListView", -> beforeEach -> jasmine.Ajax.useMock() @_page.html("<ul id=todos></ul>") @collection = new OMG.Collections.Todos() @view = new OMG.Views.TodosListView(collection: @collection) it "fetches the collection", -> expect(@collection.length).toEqual(2) it "renders the todos from the collection", -> expect($(@view.el).html()).toMatch("Do something!") expect($(@view.el).html()).toMatch("Do something else!") it "renders new todos added to the collection", -> @collection.add(new OMG.Models.Todo(body: "Do another thing!")) expect($(@view.el).html()).toMatch("Do another thing!")
  • 50. 3. SET RESPONSES(S)
  • 51. spec/javascripts/views/todos/todo_list_view_spec.coffeedescribe "OMG.Views.TodosListView", -> beforeEach -> jasmine.Ajax.useMock() @_page.html("<ul id=todos></ul>") @collection = new OMG.Collections.Todos() @view = new OMG.Views.TodosListView(collection: @collection) request = mostRecentAjaxRequest() request.response(Mocks.todos.collection) it "fetches the collection", -> expect(@collection.length).toEqual(2) it "renders the todos from the collection", -> expect($(@view.el).html()).toMatch("Do something!") expect($(@view.el).html()).toMatch("Do something else!") it "renders new todos added to the collection", -> @collection.add(new OMG.Models.Todo(body: "Do another thing!")) expect($(@view.el).html()).toMatch("Do another thing!")
  • 52. rake spec:javascripts................Finished in 2.94 seconds16 examples, 0 failures
  • 53. THANKS @markbates• jasmine https://github.com/pivotal/jasmine• jasmine-jquery https://github.com/velesin/jasmine-jquery/• jasmine-ajax https://github.com/pivotal/jasmine-ajax• evergreen https://github.com/jnicklas/evergreen• capybara-webkit https://github.com/thoughtbot/capybara-webkit• Programming in CoffeeScript http://books.markbates.com