- Create unit tests for those parts of the code that have well defined consistent behaviour.
- Write tests to reproduce bugs.Don’t go crazy now, only for those bugs that could make or break the application.
- Test should be:
- Isolated
- Independent
- Repeatable
- Automatable
- Self-Descriptive
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- Don’t test trivial things: Although a unit test applies testing strategies to units of code, a line must be drawn as to how small a unit worth testing should be. If these units are too small then a developer might have many unit tests but their value and use could be brought into question.
- Don’t create unit tests for functionality that is still in the ‘trial and error’ phase: Unit Tests work better when they are ensuring that a module’s or method’s state is retained rather on those functionality have not yet been settled on.
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