- Create CustomWebApplicationFactory to properly handle DI
- Fix IntegrationTestBase to use proper service scope pattern
- Update AuthIntegrationTests and EventsIntegrationTests to use CustomWebApplicationFactory
- Resolve EF Core provider conflict by using ConfigureWebHost override
Tests now run: 7 passed, 6 failed (auth/response format issues)
- Create backend integration test project with xUnit
- Add required packages: TestHost, Mvc.Testing, EF InMemory, FluentAssertions
- Add project reference to backend API
- Create IntegrationTestBase class with WebApplicationFactory setup
- Install Supertest for HTTP integration testing