jasmine-given is for givers

jasmine-given is a port of rspec-given, but for Jasmine. Details here: https://github.com/searls/jasmine-given

Basically, the extension lets you use a Given/When/Then DSL instead of trying to approximate Given/When/Then by using Jasmine's own beforeEach() & it(). Check out the slides and give it a try! You can play with the sample code inside your browser at http://is.gd/givensandwich

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Transcript

1. jasmine-given is for givers http://github.com/searls/jasmine-given
2. @searls http://test-double.com
3. 1st things 1st
4. thanks @jimweirich for rspec-given!
5. a brief history
6. In the beginning was xUnit public void somethingSomething() { SandwichMaker subject = new SandwichMaker(); Sandwich sandwich = subject.make(); assertEquals(sandwich.getBread(),SOME_BREAD); }
7. In the beginning was xUnit public void somethingSomething() { SandwichMaker subject = new SandwichMaker(); Sandwich sandwich = subject.make(); assertEquals(sandwich.getBread(),SOME_BREAD); } Arrange
8. In the beginning was xUnit public void somethingSomething() { SandwichMaker subject = new SandwichMaker(); Sandwich sandwich = subject.make(); assertEquals(sandwich.getBread(),SOME_BREAD); } Arrange Act
9. In the beginning was xUnit public void somethingSomething() { SandwichMaker subject = new SandwichMaker(); Sandwich sandwich = subject.make(); assertEquals(sandwich.getBread(),SOME_BREAD); } Arrange Act Assert
10. and so began our wonderful addiction to GREEN BARS
11. then along came should public void itShouldHaveBread() { SandwichMaker subject = new SandwichMaker(); Sandwich sandwich = subject.make(); assertThat(sandwich).hasBread(); }
12. then along came should public void itShouldHaveBread() { SandwichMaker subject = new SandwichMaker(); Sandwich sandwich = subject.make(); assertThat(sandwich).hasBread(); } public void itShouldHaveCheese() { SandwichMaker subject = new SandwichMaker(); Sandwich sandwich = subject.make(); assertThat(sandwich).hasCheese(); }
13. RSpec gave us DRY specs that retained readability describe MakesSandwiches describe “#make” it “has bread” do subject = MakesSandwiches.new sandwich = subject.make() sandwich.should have_bread end end end
14. RSpec gave us DRY specs that retained readability describe MakesSandwiches describe “#make” it “has bread” do subject = MakesSandwiches.new sandwich = subject.make() sandwich.should have_bread end it “has cheese” do subject = MakesSandwiches.new sandwich = subject.make() sandwich.should have_cheese end ... end end
15. RSpec gave us DRY specs that retained readability describe MakesSandwiches describe “#make” it “has bread” do subject = MakesSandwiches.new sandwich = subject.make() sandwich.should have_bread end it “has cheese” do subject = MakesSandwiches.new sandwich = subject.make() sandwich.should have_cheese end ... end end
16. RSpec gave us DRY specs that retained readability describe MakesSandwiches let(:subject) { MakesSandwiches.new } describe “#make” before(:each) { @sandwich = subject.make() } it “has bread” do @sandwich.should have_bread end it “has cheese” do @sandwich.should have_cheese end ... end end
17. RSpec gave us DRY specs that retained readability describe MakesSandwiches let(:subject) { MakesSandwiches.new } describe “#make” before(:each) { @sandwich = subject.make() } it “has bread” do @sandwich.should have_bread end it “has cheese” do @sandwich.should have_cheese end ... end end Given
18. RSpec gave us DRY specs that retained readability describe MakesSandwiches let(:subject) { MakesSandwiches.new } describe “#make” before(:each) { @sandwich = subject.make() } it “has bread” do @sandwich.should have_bread end it “has cheese” do @sandwich.should have_cheese end ... end end Given When
19. RSpec gave us DRY specs that retained readability describe MakesSandwiches let(:subject) { MakesSandwiches.new } describe “#make” before(:each) { @sandwich = subject.make() } it “has bread” do @sandwich.should have_bread end it “has cheese” do @sandwich.should have_cheese end ... end end Given When Then
20. RSpec gave us DRY specs that retained readability describe MakesSandwiches let(:subject) { MakesSandwiches.new } describe “#make” before(:each) { @sandwich = subject.make() } it “has bread” do @sandwich.should have_bread end it “has cheese” do @sandwich.should have_cheese end ... end end Given When Then Then
21. and rspec-given made an honest DSL of it. describe MakesSandwiches Given(:subject) { MakesSandwiches.new } describe “#make” When(:sandwich) { subject.make() } Then { sandwich.should have_bread } Then { sandwich.should have_cheese } end end
22. so then I just ported that same thing to jasmine. describe "MakesSandwiches", -> Given -> @subject = new MakesSandwiches describe "#make", -> When -> @sandwich = @subject.make() Then -> expect(@sandwich).toHave("bread") Then -> expect(@sandwich).toHave("cheese")
23. so then I just ported that same thing to jasmine. describe "MakesSandwiches", -> Given -> @subject = new MakesSandwiches describe "#make", -> When -> @sandwich = @subject.make() Then -> expect(@sandwich).toHave("bread") Then -> expect(@sandwich).toHave("cheese") go run it on tryjasmine.com! http://is.gd/givensandwich
24. 1 more thing
25. describe "MakesSandwiches", -> Given -> @subject = new MakesSandwiches describe "#make", -> When -> @sandwich = @subject.make Then -> @sandwich.bread == “sourdough” Then -> @sandwich.cheese == “swiss” simple boolean Thens
26. describe "MakesSandwiches", -> Given -> @subject = new MakesSandwiches describe "#make", -> When -> @sandwich = @subject.make Then( -> @sandwich.bread == “sourdough”) .Then( -> @sandwich.cheese == “swiss”) idempotent Thens
27. describe "MakesSandwiches", -> Given -> @subject = new MakesSandwiches describe "#make", -> When -> @sandwich = @subject.make Then( -> @sandwich.bread == “sourdough”) .Then( -> @sandwich.cheese == “swiss”) idempotent Thens 2x of fast is fast!
28. @searls http://test-double.com