Intro to automated testing
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This document introduces automated testing as a way to test software in a less time-consuming and error-prone manner than manual testing. It discusses challenges with manual testing like not testing all code paths and missing unintended effects. Automated testing involves writing code to test other code, allowing testing of all code paths more thoroughly. Test-driven development is introduced as an approach where tests are written before code to specify its behavior, with the code then written to pass those tests. Benefits of testing like loose coupling and avoiding unnecessary code are discussed. Frameworks for writing automated tests are also introduced.
Intro to automated testing
- 1. Introduction to Automated Testing Michael Denomy For Resilient Coders 5/16/2017
- 2. How Do You Know Your Software Works? • Click testing • Console logging • Breakpoints
- 3. What Are Some Challenges To Manual Testing • Time consuming • Error prone • Are you testing all code paths? • Unanticipated side effects
- 4. Hello, Automated Testing • No, it’s not really a cure-all • But it will go a long way to identify and avoid bugs http://www.cedricstudio.com/2014/01/sketchbook-update-snake-oil-salesman/
- 5. Side Note: Software Bugs • Anyone know where the term “bug” came from Admiral Grace Hopper
- 6. What Is Automated Testing • Code written to test your code • Isn’t that twice as much code • Isn’t that how SkyNet started
- 7. Testing as a Design Practice • Test Driven Development (TDD) • Write the test before you write the code (Red) • Write just enough code to make test pass (Green) • Rework the code to make it more readable, maintainable (Refactor) https://www.safaribooksonline.com/library/view/modern-c-programming/ 9781941222423/images/RedGreenRefactor.png
- 8. Design Benefits of Testing Stay DRY Encourages YAGNI Loose Coupling
- 9. Anatomy of a Test • Most test frameworks use a domain specific language (DSL) to write the test https://s-media-cache-ak0.pinimg.com/236x/5e/83/ b2/5e83b27ccb29f39c34c40a97096012b5.jpg
- 10. Enough Talking (Let’s Write Some Code) • First time I came in to TA, you were all building a calculator in JavaScript • We’ll use a testing framework called Mocha • https://mochajs.org/ • https://github.com/mdenomy/intro-to-mocha-testing
- 11. Introduction to Automated Testing Michael Denomy For Resilient Coders 5/16/2017