* Blog post: http://wakeupandcode.com/asp-net-and-unit-testing Learn how you can use Unit Testing to build robust web applications in ASP.NET! Anyone can learn how to build web applications.... but how robust is your application in the real world? With Unit Testing, you can write code to test your application code to detect and prevent bugs!

1. Build Robust Web Apps in the Real World
@shahedC
WakeUpAndCode.com

2. Why Unit Testing?
> Getting Started
> Writing and Running Tests
> Mocking
What’s Next?

4. > Nothing
new to learn
> Error-prone
> Expensive
> Slower

5. > Less human
error
> Faster!
> Decreasing
costs
> Learning curve

6. Legacy
New/
Improved
• SRP
• OCP
• LSP
• ISP
• DIP

7. Source: https://msdn.microsoft.com/en-us/library/jj159342.aspx

8. Why Unit Testing?
> Getting Started
> Writing and Running Tests
> Mocking
What’s Next?

11. Unit Tests
Integration Tests
UI Tests

16. Verify NUnit assembly
Also add Web App being tested

18. [TestFixture] above public test class
[Test] for public methods without parameters
[TestCase] for methods with parameters

19. Build Solution
Run Tests in Test Explorer

20. Run Tests from code UI

21. Verify actual result against expected result
Note “var” keyword

22. Verify something is equal to something else

24. Temporarily ignore tests with an optional message.

25. Correct
Views?
Redirect
to URL?
Correct
Models?
HTTP
Code?
Mock
Depen-
dencies!
Model
Populated?

28. Mocks
Pre-programmed with expected results, doesn’t
actually connect to DB, behavior verification.
Fakes
Working examples, but not production-ready
(e..g in-memory database)
Stubs
Provides canned answers
http://martinfowler.com/articles/mocksArentStubs.html

31. Why Unit Testing?
> Getting Started
> Writing and Running Tests
> Mocking
What’s Next?

33. Smoke
Tests
New
Features
Edge
Cases

34. Cost of Adding
Unit Tests
Cost of Not
Having Unit
Tests
Bugs
Features
Expenses

35. Dependency
Injection
Inversion of
Control

36. Views & ViewModels
Controllers
Service Layer
Repository Layer
Entity Framework (ORM)
SQL Server (database)

38. 60 to 80% coverage ok?

39. Why Unit Testing?
> Getting Started
> Writing and Running Tests
> Mocking
What’s Next?

40. Email: shchowd@microsoft.com  Twitter: @shahedC