Unit Test Basics NUnit quick start NUnit in Visual Studio

1. Unit test
Using Nunit in Visual Studio
Relatore: Luca Bonini
Pesaro, 22 Giugno 2018

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THEY DIDN’T USE T

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THEY DIDN’T USE T
Le cinture di
sicurezza sono un
dispositivo di sicurezza.
In caso di incidente, uno
dei più importanti
meccanismi di protezione
per chi si trova all'interno
dell'autovettura.

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THEY DIDN’T USE T

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Unit test definition
A unit test is the smallest testable part of an
application like functions, classes, procedures,
interfaces. Unit testing is a method by which
individual units of source code are tested to
determine if they are fit for use.

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A good unit test
• Able to be fully automated
• Has full control over all the pieces running (Use mocks or stubs to achieve this isolation when needed)
• Can be run in any order if part of many other tests
• Runs in memory (no DB or File access, for example)
• Consistently returns the same result (You always run the same test, so no random numbers, for example)
• Runs fast
• Tests a single logical concept in the system
• Readable
• Maintainable
• Trustworthy (when you see its result, you don’t need to debug the code just to be sure)

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Unit test naming practices
• MethodName_StateUnderTest_ExpectedBehavior
Add_TwoAndFive_ReturnsSeven
• Test[feature being tested]
TestThrowExceptionIfDivideByZero
• Given_Preconditions When_StateUnderTest Then_ExpectedBehavior
GivenCalculator_When_DivideByZero_Then_ThrowDivideByZeroException

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The 3A – Arrange, Act, Assert

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THEY DIDN’T USE T

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NuGet Pakcage for use NUnit

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NuGet Pakcage for running test in VS

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Test class

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Nunit (most important) Attributes
• Test Fixture
• Setup
• Teardown
• Test Fixture Setup
• Test Fixture Teardown
• Expected Exception
• Category
• Ignore

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