tdd-universal-everywhere

TDD Universal Architecture Everywhere

• Session by Tobi
• Notes by @FQ400

The universal architecture can be divided into three parts:

• Happy Zone
• Demilitariezed Zone
• Outer World

Happy Zone

• everything is known and certain
• the dev can have everything tested (fast)
  • units or integration of units
• here should be most of the business logic
• never talk to to the outer world without protection
• this zone should be as big as possible

Demilitariezed Zone

• this zone protects the happy zone
• it talks to the outer world usind defined interfaces
• testing is harder and slower
  • integration or end-2-end tests
• this zone should be as thin as possible

Outer World

• this is out of control of the dev
• for example:
  • File sysyem (IO),
  • DOM, window/global
  • new Date
  • network (fetch)

Disscussion and Insights

You shouldn't check in a red test for setup purpose. Everything that can be tested can also be scripted and should be automated.

A video from J. B. Rainsberger Integrated Tests Are A Scam.

It is a nice addition to the testing pyramid.