After you've written a few unit tests, you find a common pattern for the way the code is organized in each test method. These patterns are well known and have names. This tutorial explores the Arrange-Act-Assert and the Given-When-Then patterns.
- [Voiceover] In your test method…are a set of actions that assert that…the system under test works as expected.…As you write multiple tests, you'll find a pattern emerges…on how you structure the code within the test methods.…The assertions usually happen at the end of the method,…the setup of the tests near the beginning.…The pattern people notice this repetition,…and coined some catchy phrases to describe…the sections of test gut.…I'll show you two of these patterns.…The first pattern is known as the…arrange, act, assert pattern.…You start your unit test code…by adding these three comments.…
In the arrange phase, you set up the testing objects…and prepare their prerequisites for the test.…In this phase, you can figure any…parameters needed for the test.…In the act phase, you perform the actual work of the test.…This usually means calling the system…under test method and storing the results.…In the assert phase, you verify the results…of the test meet your expectations.…This is typically done by calling a…assert methods available in the unit test framework.…
- 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 Intermediate
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.
1. Create a Simple Unit Test Framework
2. Unit Testing Conventions
Choose a naming convention5m 59s
3. Work with Visual Studio Unit Testing Framework
4. Work with xUnit
5. Work with nUnit
6. Additional Topics
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