Testing

Test Driven Development • Implementation • Red-Green-Refactor • Regression Tests

Implementation • Test what should happen • Test what should not happen

Red-Green-Refactor Add a test Run all tests Write some code Run the tests again Refactor code

Regression Tests Change environment Change code Is everything still working

Testing in php $this->get("http://myserver/login.php"); $this->assertWantedPattern("Please login to continue"); $this->setField("username", "MyTestUser"); $this->setField("password", "t0ps3cr3t"); $this->clickSubmit("Login"); $this->assertWantedPattern("You are logged in");

Testing in Java beginAt("login.jsp"); assertTextInElement("h1", "Please login to continue"); setFormElement("username", "MyTestUser"); setFormElement("password", "t0ps3cr3t"); submit(); assertTextInElement("h1", "You are logged in");

Testing in Rails visit login_path assert_contain "Please login to continue" ﬁll_in "username", :with => "MyTestUser" ﬁll_in "password", :with => "t0ps3cr3t" click_button "Login" assert_contain "You are logged in"

Test Types • Unit • Functional • Integration

Unit • Most basic level of testing • Model tests in Rails

Unit Testing class ShipTest class Ship def test_crew attr_accessor :captain ship = Ship.new attr_accessor :maties ship.captain = 1 ship.mateys = 20 def crew captain + maties assert_equal 21, ship.crew end end end end

Functional • Test lifecycle of objects • Controller tests in Rails

Functional Testing class ShipsController def enter_other_ship @ship = Ship.ﬁnd_captain(params[:captain]) @ship.gold += 1000 @ship.save redirect_to :action => 'show_loot' end end class ShipsControllerTest def test_entering_other_ship post 'enter_other_ship', :captain => "Sparrow" assert_response :redirect assert_equal "Black Pearl", assign(:ship).name assert_equal 1000, assigns(:ship).gold end end

Integration • Overall application functionalities • Walk through a series of events • View Tests / Stories

Integration Testing def test_attacking_other_ships Given "another ship" do |ship| @ship_to_enter = Ship.find(ship) end Given "my ship" do Story: Attacking other ships @my_ship = Ship.find_by_captain("Sparrow") As Captain Sparrow end I attack another ship So I can buy more rum Given /my $number_of_mateys maties/ do |number_of_mateys| @ship_to_enter.attackers = number_of_mateys Scenario: Attack first ship end Given another ship When "we attach the other ship" do And my ship @my_ship.attacks(@ship_to_enter) And my 20 mateys end When we attack the other ship Then 1 pirate dies Then /$pirates_lost pirate dies/ do |pirates_lost| And we steel 1000 pieces of gold assert_equal @my_schip.crew - pirates_lost, @ship_to_enter.attackers end Then /we steel $pieces_of_gold pieces of gold/ do |pieces_of_gold| assert_equal pieces_of_gold, @my_ship.gold end end

Integration Testing Story: Attacking other ships As Captain Sparrow I attack another ship So I can buy more rum Scenario: Attack ﬁrst ship Given another ship And my ship And my 20 mateys When we attack the other ship Then 1 pirate dies And we steel 1000 pieces of gold

def test_attacking_other_ships Given "another ship" do |ship| @ship_to_enter = Ship.ﬁnd(ship) end Given "my ship" do @my_ship = Ship.ﬁnd_by_captain("Sparrow") end Given /my $number_of_mateys maties/ do |number_of_mateys| @ship_to_enter.attackers = number_of_mateys end When "we attach the other ship" do @my_ship.attacks(@ship_to_enter) end Then /$pirates_lost pirate dies/ do |pirates_lost| assert_equal @my_schip.crew - pirates_lost, @ship_to_enter.attackers end Then /we steel $pieces_of_gold pieces of gold/ do |pieces_of_gold| assert_equal pieces_of_gold, @my_ship.gold end end

Test Data • Mock/stub • Fixtures • Factories

Mocking & Stubbing def test_getting_tweet_on_homepage response = mock response.stubs(:authorization).returns(true) response.stubs(:last_tweet).resturns("#arrrrcamp rocks") TwitterAPI.expects(:get_last_tweet).returns(response) get 'index' assert_equal "#arrrrcamp rocks", assigns(:tweet).body end - Mocha - Rspec - Flex Mock

Fixtures pirates.yml ships.yml captain_jack_sparrow: black_pearl: name: Jack Sparrow name: The Black Pearl enemy: Royal Navy max_crew: 85 captain: captain_jack_sparrow interceptor: name: The Interceptor max_crew: 150 captain: captain_jack_sparrow

Factories Factory.sequence :pirate do |n| "matey#{n}" end Factory.deﬁne :ship do |f| should "only ﬁnd big ships" do f.name 'Pirateship' Factory(:ship, :max_crew => 500) f.max_crew 100 Factory(:ship, :max_crew => 200) f.captain { Factory.next(:pirate) } end ships = Ship.big_ones assert_equal 1, ships.size end - Factory Girl - Machinist - Object Daddy - Foundry - Fixjour

Questions

Testing

by ArrrrCamp on Nov 19, 2009

Accessibility

Categories

Upload Details

Usage Rights

Statistics

Testing Presentation Transcript