Unit Testing and Behavior Driven Testing with AngularJS - Jesse Liberty | FalafelCON 2014
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describe('UnitTes.ng', func.on(){ it('works with AngularJS'… } Jesse Liberty Master Consultant Falafel SoFware [email protected] @jesseliberty
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A complete introduction to unit testing, and test-first development for AngularJS programmers. Topics include tools, specs, test runners, core testing practices and patterns, Behavior-driven development, Spys, Matchers, Stubs and MOcks and much more.
Transcript of Unit Testing and Behavior Driven Testing with AngularJS - Jesse Liberty | FalafelCON 2014
describe('UnitTes.ng', func.on(){ it('works with AngularJS'… } Jesse Liberty
Master Consultant Falafel SoFware
[email protected] @jesseliberty
What We Will Cover • Why bother? • Why Aren't We Doing It? • Wri.ng specs • Matchers • Spies
Getting the terms right
§ Unit Test § Test Driven Development (TDD)
o Test First Development
§ Behavior Driven Development (BDD)
Am I In The Right Presenta7on?
• I assume… • Comfort with Angular Fundamentals • No prior experience with unit tes.ng
Ques7ons
If you get lost it will be hard to catch up so please, please ask ques.ons
Copyright © 2003-‐2014 Falafel SoFware Inc. 5 Q&A at the end
Getting Started
§ What you already need to know o Javascript o Angular
§ What hardware you need § What software you need § Where to get everything
o Getting Jasmine o Finding documentation o Finding Help
jasmine.github.io
Red, Green, Rafactor
§ Red – Your Test Should Fail § Green – Make Your Test Pass § Refactor – Clean up your code without breaking your test
Red, Green, Rafactor
§ Red – Your Test Should Fail § Green – Make Your Test Work § Refactor – Clean up your code without breaking your test
Lather Rinse Repeat
Three Laws
1. You may not write production code until you have a failing test
2. You may not write more of a unit test than is sufficient to fail
3. You may not write more production code than is sufficient to pass
The Prime Directive
§ Your test code should be as good and well maintained as your production code. o Succinct o Clear o Simple
§ However, do not worry about efficiency in test code
Test One Concept In Each Test
§ Pass/Fail should immediately convey what was tested and the result
F.I.R.S.T.
§ Fast § Independent § Repeatable § Self-validating (boolean output) § Timely
SEE: Setup Execute Check Expectations
Wri7ng Your First Spec
Demo
Measuring your step size
Matchers
Matchers
§ toBe § toEqual § toBeTruthy § toBeNull, toBeUndefined, toBeNaN § toContain § toMatch § toBeLessThan § etc.
Demo
Demo
Custom Matchers
• How would we test that an expense item is "reasonable?" • Problem #1 – We'd like to use "ToBeReasonable" • Problem #2 – How will the compare pick out the amount as the value to test?
new ExpenseItem( 'taxi', 'Taxi to airport', 89.50);
Custom Matchers
Demo
Making An Expense Item
§ Delete expense.js § Add new parameters to ExpenseItem
Requirement: Persist expenses and report number that were persisted
Demo
