Test-driven development: By example

A book introducing test-driven development. The Money example in Part I uses Java, and the XUnit example in Part II uses Python. Part III is a collection of patterns.

Notes

Keep concerns from other domains out of the domain code:

“

Using classes this way in model code is a bit smelly. We would like to use a criterion that makes sense in the domain of finance, not in the domain of Java objects. —Chapter 7

See also

• Clean code that works
• Known to unknown
• Test coverage
• Turn fears into broken tests
• Dependency and duplication
• Isolated test
• Just ask the computer
• Test-implementation coupling
• TDD and design
• What not to test
• Bad smells in test
• When to delete tests
• TDD and XP