Writing a batch of unit test for testing a range of values can get tedious. This video looks at the concept of unit test parameters and how they can simplify testing ranges of values in a unit test. It also explains why the MsTest framework is not the best framework for working the test parameters.
- [Voiceover] Here's another situation…that appears when writing unit tests…that need to test a wide range of values.…In some cases you'll find yourself…creating dozens of tests to exercise…the code with the values.…I'll show you an example in this…NumberAnalyzer class.…On line 10, I have a constructor…that takes a CandidateNumber.…On line 13, I have a method…that returns a bool that's called…ContainsOddDigit.…The idea is, we'll look at the CandidateNumber.…If any of the digits are odd,…I'll return true.…
So if I pass the number 100, I'll get true.…If I pass the number 24, I'll get false.…To test this, I created a separate class,…CheckingForOddDigit_Should.…I compiled the project so…I could see my unit test.…I have seven tests.…As you noticed, the more tests you get,…the harder it is to find the test in here.…I do have good names for my tests…but it's getting harder to find them.…One thing you can do is go to your Test Explorer…and choose to group by the class name.…Now I see all the unit tests that are in.…
This CheckingForOddDigit_Should class.…
Author
Walt Ritscher
Updated
8/29/2017Released
6/16/2016- Examining types of frameworks
- Choosing a naming convention
- Creating unit tests
- Running unit tests with Visual Studio
- Modifying and correcting code
- Handling exceptions
- Installing and using nUnit
- Viewing test results with CodeLens
Skill Level Beginner
Duration
Views
Q: This course was updated on 08/22/2017. What changed?
A: New videos were added that cover live unit testing and creating a project with the unit test framework.
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Introduction
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Welcome59s
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1. Create a Simple Unit Test Framework
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What are unit tests?6m 23s
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Add the test projects1m 14s
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Analyze which tests to run2m 10s
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Create a simple test4m 45s
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Create a simple test runner3m 46s
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Add additional tests2m 59s
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Refactor the test runner3m 59s
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Create an Assert class5m 20s
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Use the Assert class3m 49s
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2. Unit Testing Conventions
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Choose a naming convention5m 59s
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3. Work with Visual Studio Unit Testing Framework
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Create the unit test4m 16s
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Run the unit test3m 21s
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Modify code to pass test4m 53s
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Expected exceptions4m 27s
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Test parameters4m 9s
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4. Work with xUnit
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Install xUnit2m 21s
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Expected exceptions4m 55s
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Test multiple parameters2m 13s
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5. Work with nUnit
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Install nUnit2m 9s
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Create and run a unit test2m 25s
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Use the nUnit constraints3m 44s
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More nUnit constraints6m 16s
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Test parameters2m 21s
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6. Additional Topics
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Get more from your tests4m 40s
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Debug unit tests2m 8s
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Use the test menus3m 27s
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Live unit testing4m 56s
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Conclusion
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Goodbye1m 1s
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Video: Test parameters