[WIP] Setup integration test environment with DB persistence

[Copilot]

• Verify agent instructions for backend test integration (if accessible)
• Add SQLite test dependencies to ServerTests project
• Add SQLite persistence integration test for ApplicationDbContext
• Run targeted dotnet test to validate new persistence test

Original prompt

TASK: Setup Integration Test Environment & DB Persistence

Reference Context:
Please strictly follow the rules defined in .github/agent/backend-testintegration-agent.md.

Step 1: Dependencies Check
Check ServerTests/nam.ServerTests.csproj. We need to run tests using SQLite in-memory to avoid external dependencies.
If missing, run the dotnet commands to add these packages to the test project:

• Microsoft.EntityFrameworkCore.Sqlite
• Microsoft.Data.Sqlite

Step 2: Database Integration Test
Create a new test class under ServerTests/Integration/Database/PersistenceTests.cs.

• Goal: Verify that we can save and retrieve a basic entity (e.g., a User or the simplest entity available in Domain).
• Setup:
  • Create a new ApplicationDbContext using DbContextOptionsBuilder configured with UseSqlite("DataSource=:memory:").
  • Important: Open the connection explicitly (connection.Open()) and pass it to the options, otherwise the in-memory DB will vanish when EF closes the connection.
  • Call EnsureCreated() to build the schema.
• Test:
  • Add an entity -> SaveChanges().
  • Create a new Context instance (using the same open connection) to verify data was actually persisted and not just cached in local memory.
  • Assert the data exists.

Step 3: Verify
Run dotnet test to confirm the persistence logic works and packages are correct.

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.