QA/Contribute/QA 101/Black Box Testing

What is black box testing?

Testing with no knowledge of what's going on inside the device/system under test.

Basic black-box testing techniques

As much emphasis as possible should be placed on interactive exercises here.

Testing from a script

• Introduce MozTrap?
  • https://moztrap.readthedocs.org/en/latest/userguide/index.html
• What to do when the script isn't specific enough
• Related: how to write good scripts, known as 'test cases.'
  • https://developer.mozilla.org/en-US/docs/Mozilla/QA/Test_Case_Writing_Primer

Exploratory testing

This is the 'test a Coke machine' exercise.

https://oneanddone.mozilla.org/en-US/tasks/12/

Details on how to do exploratory testing: https://quality.mozilla.org/2012/11/exploratory-testing-on-moztrap-job-board-posting-1/

https://oneanddone.mozilla.org/en-US/tasks/10/

What is a regression?

A regression is when a defect re-appears after it went on vacation for a while.

Documenting your process

• Starting from a known state
• Notebooks
• Text files
• Screenshots
• Screencasts!
• Bring this back to test scripts and test cases.