NUnit：如何为三个函数编写一种通用测试方法？

Question

I'm using NUnit. Here is my requirement:

Let's say there are 3 functions namely add() , sub() and mul() . How to write just one generic test method in Nunit?

So depending on the function type the generic test method execute the tests.

Means if I pass add() to generic test method it should perform the test for add() and so on. I do not want to write 3 separate test methods for 3 methods.

I just want to accomplish this using just one generic test method. Is this possible?

Answer 1

It seems that you don't understand what good unit tests are about.

The intention of a unit test is to help you to quickly identify the root cause of failure, in order to fix it as quickly as possible.

That starts with the simple fact that you have one test for each "different behavior" you intend to test. In other words: you definitely go for one test method for each of your 3 test methods.

You might even go for multiple test methods for those 3 methods; because "adding to empty" could be a different thing then "adding to non-empty" for example.

Probably you want to have some "integration" level test that really uses all three of your methods in one test case; just to make sure that the overall "plumbing" works out in the end. But from a unit test level, you make sure that those three methods work as expected on a per method level. You know, when you really verified that add() works in all possible scenarios; there is no more special need to test it in conjunction with those other methods!