What is a test?

• a set of problems, questions, etc., for evaluating a person's abilities, skills, or performance

• the means by which the quality of anything is determined

• a trial of the quality of something

To test a software means to check if the software is doing what needs to be done

Automated Tests

An automated test is a software that tests your software

Test Types

Unit tests

Integration tests

end-to-end (aka e2e) tests

Test Types

Smoke tests

Black-box testing

White-box testing

Monkey testing

Costs

https://en.wikipedia.org/wiki/Software_testing

https://www.scrumalliance.org/community/spotlight/mike-cohn/december-2014/test-automation-let-service-be-your-middle-man

Test Automation Pyramid

Documentation

xUnit architecture

Kent Back created 'SUnit' for SmallTalk. From that first implementation a more generic architecture it's born

https://web.archive.org/web/20150315073817/http://www.xprogramming.com/testfram.htm

Test Runner

Test Case

Test fixtures

Test Suite

Assertions

Test result formatter

F.I.R.S.T.

Fast

Isolated

Repeatable

Self-Validating

Thorough

https://github.com/ghsukumar/SFDC_Best_Practices/wiki/F.I.R.S.T-Principles-of-Unit-Testing

What to Test?

Low Hanging / Highest Value

Test Driven Development

Kent Beck has developed this technique and distilled it in his famous book "Test Driven Development: By Example" in 2003

Create a test case before start writing the code

Write the simplest code possible to pass that test

Iterate

Refactoring after each iteration

When you pick the next test try to write a test that will teach you something new

I really mean the simplest code ever possible...

Better Design

YAGNI

Costs

ShuHaRi

ShuHaRi roughly translates to "first learn, then detach, and finally transcend."

Shu =  "protect", "obey"

Ha = "detach", "digress"

Ri = "leave", "separate"

Graph By Ruma Dak

Graph By Pawel Brodzinski