MidwestJS

Minneapolis, MN

Things that stood out

• Frameworks
• Seperation of HTML and Code Logic
• Not everyone is excited about ES6

We SHOULD be writing tests

• We want to stay competitive
• We want to provide our clients with quality work
• We have a lot of developers coming in and out of projects
• We want to write better code

Types of Tests

• Unit
• Component Integration
• Integration (Selenium)
• Manual

Unit Testing Frameworks

• Jasmine
• Mocha
• Karma
• QUnit
• Tape
• Nodeunit

Considerations for Unit Testing

• Encourages modular coding
• Tests can act as documentation
• Time considerations
• Cost/benefit per test

Considerations for Integration Testing

• Constant need for updates when UI changes
• Flakiness of tests
• Time to run tests
• Cost/benefit per test

Test Driven Learning

Design a cash register drawer function that accepts purchase price as the first argument, payment as the second argument, and cash-in-drawer (cid) as the third argument.

cid is a 2d array listing available currency.

Return the string "Insufficient Funds" if cash-in-drawer is less than the change due. Return the string "Closed" if cash-in-drawer is equal to the change due.

Otherwise, return change in coin and bills, sorted in highest to lowest order.

Sources

• TDD the Hard Parts
• AngularJS Unit Testing For Real Though
• Jasmine vs. Mocha, Chai, and Sinon
• AngularJS Docs - Unit Testing

Readings

• JavaScript Testing Recipes (http://jstesting.jcoglan.com/)
• Test-Driven Development by Example (Kent Beck)
• Is TDD Dead? (DHH, Kent Beck, Martin Fowler)
• Testable JavaScript (Mark Ethan Trostler)

Thank you!