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Integration testing is a testing technique that tests the integration between multiple components. It usually uses a database so that you can test your query logic. Docker is a great tool for creating disposable databases for your integration tests. And you can do even better with the Testconatiners library. It allows you to programmatically create your Docker containers for integration testing.

Test containers – integration tests with Docker in .NET
https://www.milanjovanovic.tech/blog/testcontainers-integration-testing-using-docker-in-dotnet

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Chapter:
0:00 Create test project and install test container
1:55 Implementing a custom WebApplicationFactory
6:11 Adding a PostgreSQL container with test containers
8:15 Creating the base integration test class
9:57 Integration Test 1: Creating a Product with Exception
13:10 Integration test 2: Creating a product and validating it in the database
16:13 Integration test 3: Retrieve a product by ID

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