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Modern C++ Programming with Test-Driven Development
book

Modern C++ Programming with Test-Driven Development

by Jeff Langr
October 2013
Intermediate to advanced
368 pages
9h 20m
English
Pragmatic Bookshelf
Content preview from Modern C++ Programming with Test-Driven Development

3.5 Getting Green on Red

The first rule of TDD requires you to first demonstrate test failure before you can write any code. In spirit, this is a simple rule to follow. If you write only just enough code to make a test to pass, another test for additional functionality should fail automatically. In practice, however, you’ll find yourself sometimes writing tests that pass right off the bat. I refer to these undesired events as ​ premature passes​ .

You might experience a premature pass for one of many reasons:

  • Running the wrong tests

  • Testing the wrong code

  • Unfortunate test specification

  • Invalid assumptions about the system

  • Suboptimal test order

  • Linked production code

  • Overcoding

  • Testing for confidence

Running the Wrong Tests

The first thing to do ...

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Publisher Resources

ISBN: 9781941222423Errata