Answer
Testing strategies:
- Use InMemory provider for unit tests
- Use SQLite in-memory for integration tests
- Mock repositories/DbContext for isolation
Quick Answer
Test Web API with EF Core: use WebApplicationFactory with UseInMemoryDatabase for integration tests (or SQLite for more complete testing). Reset DB state between tests. Unit test: mock IRepository or use an in-memory context. Don't test EF Core queries with just mocks - you need a real DB to verify query translation. TestContainers library spins up a real PostgreSQL/SQL Server container for tests.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ