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(C++) TDD

'Test Driven Development (TDD) is a software design technique' [1].

Here is an example of a set of rules to work following TDD [2](citing [3]):

1. Write production code only to pass a failing unit test
2. Write no more of a unit test than sufficient to fail (compilation failures are failures)
3. Write no more production code than necessary to pass the one failing unit test

• Classes used in a desktop application take much longer to write tests for. Consider writing 'TestMyClass' applications to see the class in isolation. If visual class has non-visual data members, these non-visual data members must be tested for emitting signals (notifiying these visual class to update) and being in sync with the visual class. If you refrain from doing this, you will regret it eventually and write these tests later.

References

1. Jeff Langr. Modern C++ Programming with Test-Driven Development. 2013. ISBN: 978-1-937785-48-2. Introduction chapter, page xiv: 'Test-Driven Development (TDD), a software design technique devised in the late 1990s, [...]'
2. Jeff Langr. Modern C++ Programming with Test-Driven Development. 2013. ISBN: 978-1-937785-48-2. Chapter 3.4, page 59.
3. Robert C. Martin ('Uncle Bob'). http://butunclebob.com/ArticleS.UncleBob.TheThreeRulesOfTdd

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