Radicade/ServerTests/TestDbOptions.cs

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Diagnostics;
using RadicadeServer.DB;

namespace RadicadeServer.Tests;

/// <summary>
/// Builds the options every test context uses.
///
/// Each test asks for its own InMemory database, so each one needs its own
/// <see cref="DbContextOptions{TContext}"/> and EF builds a separate internal service
/// provider for it. Past twenty of those EF raises
/// <see cref="CoreEventId.ManyServiceProvidersCreatedWarning"/> as an exception, which
/// fails whichever tests happen to run after the twentieth provider rather than the test
/// that built it. That count is a property of how the harness allocates contexts, not of
/// the behaviour under test, so the warning is ignored once here instead of per test.
/// </summary>
internal static class TestDbOptions
{
    public static DbContextOptionsBuilder<RecDBContext> Create() =>
        new DbContextOptionsBuilder<RecDBContext>()
            .ConfigureWarnings(w => w.Ignore(CoreEventId.ManyServiceProvidersCreatedWarning));
}