Developers inevitably work to a deadline and try different approaches, which can result in artifacts left over in the code. Even if artifacts aren't refactored, developers should still want to go back ...

For example, the Microsoft Code Analysis 2017 extension gives you built-in access to more than 100 of the most popular FxCop rules as live analyzers. The analyzers watch your C# or Visual Basic code ...

When you're refactoring legacy code, it doesn't matter if some of the tests you write happen to contradict ideal specifications. What matters is that they test the program's current behavior .