Training: Integration Testing in .NET 9

This repository contains test projects examples for the .NET ecosystem used in the Integration Testing in .NET 9 course.

Learning Objectives

• Understand and define the purpose of integration testing.
• Identify benefits and challenges of integration testing.
• Organize test files, folders, and test data effectively.
• Integrate the main project and manage test dependencies.
• Compare MSTest, xUnit and NUnit, understanding similarities and differences.
• Set up and write integration tests using Nunit.
• Use WebApplicationFactory for ASP.NET Core applications.
• Set up test services and mock dependencies.
• Testing Query Parameters and Request Headers and Status Codes.
• Utilize test lifecycle features in NUnit ([SetUp], [TearDown]).
• Write and manage async integration tests in .NET 9.
• Implement async setup and teardown methods.
• Avoid pitfalls in asynchronous testing.
• Understand BDD and write feature files with Cucumber.
• Use SpecFlow for integration test execution.
• Decide between real and mocked dependencies in tests.
• Configure Dependency Injection for integration tests.
• Use mocking tools and techniques effectively.
• Integrate reporting tools for test results.

Table of Contents

Basic Topics

Module 1: Introduction to Integration Testing

1. What is Integration Testing?
2. Setting Up a Testing Environment in .NET 9

Module 2: ASP.NET Core Integration Testing Fundamentals

1. Working with ASP.NET Core TestHost
2. WebApplicationFactory in .NET
3. Configuring Test Environments and Dependencies

Module 3: Dependency Injection and Service Mocking

1. Introduction to Dependency Injection in .NET 9
2. Overview of mocking libraries in .NET 9
3. Advanced Dependency Injection

Module 4: HTTP Client Testing and Route Verification

1. Introduction to HttpClient in .NET 9
2. Testing HTTP Endpoints with HttpClient
3. Testing Query Parameters and Request Headers and Status Codes

Module 5: Error Handling, Logging, and Diagnostics

1. Error Handling in Integration Tests
2. Structured Logging in Tests
3. Using Diagnostics and Tracing for Debugging

Advanced Topics

Module 6: Introduction to Behavior-Driven Development (BDD) and Cucumber

1. BDD Concepts
2. Cucumber and SpecFlow Overview
3. Setting Up a SpecFlow Project in .NET 9

Module 7: Implementing Step Definitions and Running Integration Tests

1. Creating a Feature File for ASP.NET Core APIs
2. Writing Step Definitions for API Scenarios
3. Handling Reusable Steps and Common Test Logic
4. Running Tests and Generating Reports