Jessie is a node.js runner for Jasmine BDD framework. It allows running of Jasmine specs in node.js environment, adds pending specs, improves error and failure reporting.

1. jessie
TDD in node.js using Jasmine
Marcin Bunsch
nodecamp.eu 2011
Sunday, June 12, 2011

2. Jasmine
• JavaScript testing framework
• does not depend on any other JavaScript frameworks.
• does not require a DOM.
• does not pollute prototypes
• similar to RSpec
Sunday, June 12, 2011

3. describe('Simple specs', function() {
it("should work", function() {
expect("aaa").toEqual('aaa')
})
it("should work with not", function() {
expect("bbb").not.toEqual('aaa')
})
})
Jasmine - suites and specs
Sunday, June 12, 2011

4. expect(x).toEqual(y)
expect(x).toBe(y)
expect(x).toMatch(pattern)
expect(x).toBeDefined()
expect(x).toBeNull()
expect(x).toBeTruthy()
expect(x).toBeFalsy()
expect(x).toContain(y)
expect(x).toBeLessThan(y)
expect(x).toBeGreaterThan(y)
expect(fn).toThrow(e)
Jasmine - matchers
Sunday, June 12, 2011

5. describe('Before and after specs', function() {
var a = 1
beforeEach(function() { a += 1 })
afterEach(function() { a += 1 })
it("should execute the beforeEach", function() {
expect(a).toEqual(2)
})
it("should execute the afterEach", function() {
expect(a).toEqual(4)
})
})
Jasmine - before and after
Sunday, June 12, 2011

6. describe('Spies', function() {
var some_object = { some_func: function() {} }
it("should be able to spy on existing objects", function() {
spyOn(some_object, 'some_func')
some_object.some_func()
expect(some_object.some_func).toHaveBeenCalled()
})
it("should be able to create spies", function() {
var spy_func = jasmine.createSpy()
spy_func()
expect(spy_func).toHaveBeenCalled()
})
})
Jasmine - spies
Sunday, June 12, 2011

7. Jessie
• node.js runner for Jasmine
• extends Jasmine
• introduces pending specs
• improves error and failure reporting
• multiple report formatters
• supports CoffeeScript
Sunday, June 12, 2011

8. describe('Pending specs', function() {
it("should work")
it("should work with pending", function() {
pending("TODO")
})
})
Jessie - pending specs
Sunday, June 12, 2011

9. describe('Failing spec', function() {
it("should fail", function() {
expect(1).toEqual(2)
})
})
Jessie - failure reporting
Sunday, June 12, 2011

10. Jessie - formatters
Sunday, June 12, 2011

11. Jessie - formatters
Sunday, June 12, 2011

12. describe('Sugar specs', function() {
var number = 1
var array = [1,2]
var func = function() {}
it("should work", function() {
"aaa".should_be("aaa")
number.should_be(1)
array.should_be([1,2])
func.should_be_a(Function)
"bike courier".should_match("bike")
})
it("should work with not", function() {
"bbb".should_not_be("aaa")
number.should_not_be(2)
array.should_not_be([3,4])
})
})
Jessie - sugar
Sunday, June 12, 2011

13. describe 'OMG Coffee Spec', ->
it "should work", ->
expect(1).toEqual 1
it "should work", ->
"foo".should_be "foo"
Jessie - CoffeeScript
Sunday, June 12, 2011

14. github.com/futuresimple/jessie
Sunday, June 12, 2011