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Here is the riddle for you to solve: Suppose there is a method that creates and populates a collection. There are two possibilities before you:
(1) Assert that the collection has the exact expected content, or
(2) Only assert that its size is as expected.
Which of the two unit tests is better at testing that method?
I will argue that checking the size of the resulting collection is, by all means, sufficient. Whatever you add to the unit test will not improve your chances of isolating bugs. If you disagree, then I will kindly invite you to watch this video and learn about one of the most frequent fallacies in unit testing.
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#csharp #dotnet #unittesting

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Barion

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The focus on micromanaging implementations in unit tests can leave genuine bugs unnoticed. The author demonstrates this by showing ineffective unit tests and then presents a simpler yet effective method for writing them. Emphasizing the importance of testing critical public attributes rather than overcomplicating with unnecessary details, the author advocates for straightforward code and effective collaboration among programmers.

The Secret of Unit Testing I Learned by Failing