c# - Refactoring strategy for the class which generates specific text file -


I am not a TDD knot and I do not know how to solve the following problem. I have a large class that has a specific format Generates text file in, for importing into external systems, I am going to refine this class again and I want to write unit test first.

How should these tests look like? Actually the main goal - not to break the structure of the file. But does not it mean that I should compare the contents of the file before and after?

I think you will benefit from an exam that I will hesitate to call "Unit Test" Although arguably this current text-file-producer "unit" checks for it, it only has to differentiate between the current code and its output and a "golden master" file (which will run once you run the test and its designated place Can be generated by copying). If the code has a very conditional behavior, then you want to run it with multiple instances, each case of a separate test, with the existing code, by definition, all tests have to be passed.

Start Testing Now Find a method - or better, write a test for a method that you can remove, remove a true unit test - method, and make sure that all tests, new ones Pass the small system and still for the bigger system. Salted, rinse, repeat system testing gives you a protective deterrent which lets you confidently move forward in refactoring; Unit tests run the design of the new code.

The library is available to make such testing easier (though it is very easy without them). See.


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