How to Unit Test Controllers in ASP.NET Core Web API (With Examples & Mocking)

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In this video, Pranaya Rout from Dot Net Tutorials walks you through unit testing controllers in ASP.NET Core Web API. Learn why controllers are crucial, how to isolate them with mocking, and how to write effective unit tests using Moq and xUnit. We cover real-world examples, including the OrdersController, validating different scenarios like successful responses, error handling, and invalid inputs. Perfect for beginners and professionals looking to build robust, bug-free APIs.

What you’ll learn:
The role of controllers in ASP.NET Core Web API
Why and how to unit test controllers in ASP.NET Core Web API
Mocking the service layer for isolated, fast tests
Writing tests for different controller actions (GET/POST)
Practical examples with Moq and xUnit to test API endpoints

Whether you are building production-ready APIs or simply want to boost your .NET testing skills, this step-by-step guide has you covered.

#AspNetCore #UnitTesting #WebAPI #DotNetTutorials #Moq #xUnit #SoftwareTesting #CSharp #API #DotNet

You can contact us for live training using the Mobile Number, WhatsApp Number, and Email ID below.
Contact Number: 91 7021801173
WhatsApp Number: 91 7021801173

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00:00 - Introduction
00:30 - What are Controllers in ASP.NET Core Web API
01:15 - Responsibilities of Controllers
03:35 - Why Unit Test Controllers?
05:22 - Why Mock the Service Layer in Controller Unit Tests?
09:15 - Unit Testing API Controller

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✅ Thanks for watching!
If this video helped you understand how to unit test controllers in ASP.NET Core Web API using Moq and xUnit, don’t forget to LIKE, SHARE, and SUBSCRIBE for more real-time .NET tutorials.

💬 Have questions or need clarification? Drop them below — I personally reply to comments!

Happy coding!
– Pranaya Rout | Dot Net Tutorials 💻

#DotNet #UnitTesting #WebAPI #Moq #xUnit #AspNetCore

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