1. Unit Testing ASP.Net MVC Craig Berntson Mojo Software Worx

2. Ego stuff  Chief Software Gardener Mojo Software Worx Salt Lake City  Author, “Continuous Integration in.Net”  Columnist, “.Net Curry” eMagazine  Conference & event speaker  INETA Community Speaker  ComponentOne Community Influencer  Chief Software Gardener Mojo Software Worx Salt Lake City  Author, “Continuous Integration in.Net”  Columnist, “.Net Curry” eMagazine  Conference & event speaker  INETA Community Speaker  ComponentOne Community Influencer

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4. Problem with…  if  switch  for  foreach  while  do…while

5. Worse than you think  In 1976, G.J. Meyers described a 100-line program that had 10 18 unique paths.  In 1979 he described a much simpler program. It was just a loop and a few IF statements. In most languages, you could write it in 20 lines of code. This program has 100 trillion paths Testing Computer Software, Cem Kaner  In 1976, G.J. Meyers described a 100-line program that had 10 18 unique paths.  In 1979 he described a much simpler program. It was just a loop and a few IF statements. In most languages, you could write it in 20 lines of code. This program has 100 trillion paths Testing Computer Software, Cem Kaner

6. How do you test this? 6

7. Agenda  What we won’t talk about  TDD  Javascript testing  Production ready code  What we won’t talk about  TDD  Javascript testing  Production ready code  What we’ll talk about  Setup tests  Remove database  Keep it simple

8. Demo: Sample Application 8

9. Unit test framework  MSTest  NUnit  xUnit  Others  MSTest  NUnit  xUnit  Others

10. Unit test runner  MSTest  NUnit  Resharper  NCrunch  Others  MSTest  NUnit  Resharper  NCrunch  Others

11. Demo: Our first test 11

12. Default Data access  Difficult to test  There is no IDbContext  DbContext tightly bound to EF (EntityFramework.dll)  Difficult to test  There is no IDbContext  DbContext tightly bound to EF (EntityFramework.dll) ControllerContext Entity Framework

13. Removing database access 1.Repositories 2.Mocks 3.Dependency Injection 1.Repositories 2.Mocks 3.Dependency Injection

14. Repositories  Easy to test  IRepository  Extrapolate away from Context  Easy to test  IRepository  Extrapolate away from Context ControllerRepositoryContext Entity Framework

15. Mocks  Allows us to fake the database ControllerRepositoryMock

16. Testing vs. runtime ControllerRepositoryMock Context Entity Framework

17. Class2 How we normally instantiate Class1 new Class2()

18. ClassA Dependency injection Class1 IClass2() ClassA : IClass2

19. Dependency injection  Allows for loose coupling  Inversion of control (IOC)  IOC Container  Allows for loose coupling  Inversion of control (IOC)  IOC Container

20. Ajax & json  AJAX calls into the controller  JSON returns result  AJAX calls into the controller  JSON returns result

21. Demo: ajax & json 21

22. Next steps?  My blog  Art of Unit Testing  Udemy.com  Katas  TDD  My blog  Art of Unit Testing  Udemy.com  Katas  TDD

23. Review  Arrange – Act – Assert  In memory  Repositories  Mocks  Dependency Injection  Arrange – Act – Assert  In memory  Repositories  Mocks  Dependency Injection

24. Questions?  craig@mojosoftwareworx.com  www.craigberntson.com/blog  @craigber  craig@mojosoftwareworx.com  www.craigberntson.com/blog  @craigber 24