Unit test using NUnit in Visual Studio

nunit, unittest, visualstudio

Transcript

1. Unit test Using Nunit in Visual Studio Relatore: Luca Bonini Pesaro, 22 Giugno 2018
2. 2 THEY DIDN’T USE TDD
3. 3 THEY DIDN’T USE TDD 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.
4. 4 THEY DIDN’T USE TDD
5. 5 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.
6. 6 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)
7. 7 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
8. 8 The 3A – Arrange, Act, Assert
9. 9 THEY DIDN’T USE TDD
10. 10 NuGet Pakcage for use NUnit
11. 11 NuGet Pakcage for running test in VS
12. 12 Test class
13. 13 Nunit (most important) Attributes • Test Fixture • Setup • Teardown • Test Fixture Setup • Test Fixture Teardown • Expected Exception • Category • Ignore