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Unit testing with C/C++: What do you teach people who either did not do unit testing before or come from Java/Junit?
What is the single most important lesson / thing to remember/ practice from your point of view that saves a lot of time or stress (especially regarding C/C++)?
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The most scalable way to write unit tests in C is using a unit testing framework, such as: CppUTest. Unity. Google Test.
Tightly coupled code is extremely hard to unit test (and probably shouldn't be unit tested - it should be re-factored first), because by definition unit tests can only test a specific unit of something. All calls to databases or other components of the system should be avoided from Unit Tests because they violate this.
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