Testing Entity Framework Core Correctly in .NET

Summary

The main theme is the detrimental impact of using an in-memory provider in EF Core integration tests. This practice incorrectly replaces the real database interaction, bypassing critical query generation and conversion logic crucial for accurate testing. The practical takeaway is to avoid the in-memory provider for integration tests to ensure they reliably reflect how the application will behave with a real database, thus preventing flaky tests and missed application failures.