Talk about (unit) testing REST APIs in ASP.NET Core 2.1 using TestServer. Demo here https://github.com/sdamian/RestApiTestingDemo

1. Functional REST API testing
in ASP.NET Core

2. Does anyone know why the
API isn’t working anymore?

3. Because api/product/1 is not the
same as api/products/1

4. SystemTests
Integration
Unit

5. FunctionalTests

6. How to test controllers and
actions

7. How to test controllers and
actions… Not!

8. What we DO want to test
• The API contract
• Resource access (routing)
• Accepted verbs
• Response codes
• Response format/representation
• API versioning and backwards compatibility
• Validation
• Access control

9. How it used to be back in the
day

10. Nancy had the right ideea

11. But we just usedWebApi and
Postman

12. WebApi self hosting with
HttpSelfHostServer

13. Why not start a host and server
the API during tests?

15. OWIN, Katana andTestServer

16. Nowadays – ASP.NET Core 2.1

17. Pick your testing framework

18. Add some nuget packages

19. Start writing tests (DEMO)
https://github.com/sdamian/RestApiTestingDemo

20. Separate the API (unit) tests
from your business logic tests

21. Friends don’t let friends use
untested API’s

22. Thank you!