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c#visual-studiounit-testing
Tim
Tim

Reputation: 99428

Is it possible to write the code to be tested and the testing code in the same source file?

In Visual Studio IDE, I can create a unit test file with a unit test class for the code in a source file, by right clicking inside the code to be tested and selecting the option to create unit test.

The testing code and the code to be tested are not only in the same file, but also not in the same namespace.

Is it possible to write the code to be tested and the testing code in the same source file?

If yes, how? Should I put them in the same or different namespaces? Can you give some examples?

Thanks.

Upvotes: 0

Views: 132

Answers (3)

Alexei Levenkov
Alexei Levenkov

Reputation: 100547

Yes, there is no restrictions where "code under test" is coming from.

While it is somewhat strange you can have just UnitTest project and put code you trying next to your tests. If you want - even in the same files using same or different namespaces of your choice (C# is not Java and there is no connection bewteen file name/location and namespace)

Upvotes: 1

D Stanley
D Stanley

Reputation: 152556

It is possible, but that also means that you deploy your tests with your code, as well as any mocks, dummy data, etc. All of this is unnecessary and may confuse anyone trying to use the library.

However, to answer the question, just use different namespace blocks to separate the test classes in a separate namespace.

namespace MyCompany.MyLibrary
{
    // classes
}

namespace MyCompany.MyLibrary.Test
{
    // tests, mocks, etc.
}

Upvotes: 2

John Wu
John Wu

Reputation: 52240

Yes, but

If you put them in the same code base as the system under test, then you will be unable to deploy the system without also deploying the tests. Do you want the tests sitting on your production servers?

Also, the same app.config (or web.config, depending on your solution) will apply to both your tests and the system under test. That means you can't set up alternate configurations for things like AutoFac, which normally is handy for unit/isolation testing.

Upvotes: 0

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