The Mikado method

Preparation

A tool to draw a mikado graph (eg: a miro board, Coggle, Xmind, Mindmup ..)
An IDE with the kata you choose opened

Learning Goals

Explain the interest of using the mikado method to refactor legacy code
List the steps to create a mikado graph

Connect (5 min)

Three situations that happened when refactoring a legacy codebase. 1 note per situation

Concepts (15 min)

Introduce the mikado method and and its workflow.
Make a demo using the test-data-builders-kata, choosing the language of your choice:
- Mikado Goal: replace test inputs creation with Test Data Builders
- Create a Test Data Builder for an Invoice, using only builders
- Solution for the next step: Create a Test Data Builder for a BookPurchase
- Revert changes

Concrete Practice (35 min)

Use the previously found prerequisite as starting point for the team
Make the team guide you in the next steps of implementation and draw the mikado graph

Conclusion - Does our code have this issue? (5 min)

Ask people to discuss for 5 minutes about the question: Do you have part of your codebase to refactor where you could apply the Mikado Method ?