LegacyCode

Legacy code

Introduction

Purpose

• Describe how to build up understanding of legacy code, to enable maintenance of the legacy code.

• How is the code currently operating

• After the code has been changed, what will the code be able to do

• What code needs to be changed

• What tests needs to be added

• What tests needs to be changed

• What tests needs to be removed

• Documentation update

  • Code purpose
  • Code scope
  • Context diagram

Scratch pad

• What functions calls 'the work'
• What modules uses 'the work' module
• What function does 'the work' call
• What modules does 'the work' use

Run all tests to verify the current code and tests work

Map current code call tree