furniture-service/tests/Furniture.Service.Application.UnitTests/RuntimeWiringTests.cs

using Furniture.Service.Application.Adapters;
using Furniture.Service.Application.DependencyInjection;
using Furniture.Service.Application.Grpc;
using Furniture.Service.Application.UseCases;
using Furniture.Service.Contracts.UseCases;
using Microsoft.Extensions.DependencyInjection;

namespace Furniture.Service.Application.UnitTests;

public class RuntimeWiringTests
{
    [Fact]
    public async Task AddFurnitureServiceRuntime_WhenInvoked_ResolvesUseCase()
    {
        var services = new ServiceCollection();
        services.AddFurnitureServiceRuntime();

        using var provider = services.BuildServiceProvider();
        var useCase = provider.GetRequiredService<IGetFurnitureAvailabilityUseCase>();

        var response = await useCase.HandleAsync(new GetFurnitureAvailabilityRequest("FUR-001", "corr-123"));

        Assert.Equal("FUR-001", response.FurnitureId);
        Assert.Equal("Contoso Lounge Chair", response.DisplayName);
        Assert.Equal(8, response.QuantityAvailable);
    }

    [Fact]
    public async Task AddFurnitureServiceRuntime_WhenUsingDemoFurnitureAlias_ResolvesMappedAvailability()
    {
        var services = new ServiceCollection();
        services.AddFurnitureServiceRuntime();

        using var provider = services.BuildServiceProvider();
        var useCase = provider.GetRequiredService<IGetFurnitureAvailabilityUseCase>();

        var response = await useCase.HandleAsync(new GetFurnitureAvailabilityRequest("FURN-001", "corr-123"));

        Assert.Equal("FURN-001", response.FurnitureId);
        Assert.Equal("Contoso Lounge Chair", response.DisplayName);
        Assert.Equal(8, response.QuantityAvailable);
    }

    [Fact]
    public void FurnitureAvailabilityGrpcContractAdapter_WhenMapped_PreservesValues()
    {
        var adapter = new FurnitureAvailabilityGrpcContractAdapter();
        var request = new GetFurnitureAvailabilityRequest("FUR-002", "corr-456");

        var grpcContract = adapter.ToGrpc(request);
        var roundtrip = adapter.FromGrpc(grpcContract);

        Assert.Equal("FUR-002", roundtrip.FurnitureId);
        Assert.Equal("corr-456", roundtrip.CorrelationId);
    }

    [Fact]
    public void FurnitureAvailabilityGrpcContractAdapter_WhenCorrelationMissing_GeneratesCorrelation()
    {
        var adapter = new FurnitureAvailabilityGrpcContractAdapter();
        var grpcContract = new GetFurnitureAvailabilityGrpcContract("FUR-003", string.Empty);

        var mapped = adapter.FromGrpc(grpcContract);

        Assert.Equal("FUR-003", mapped.FurnitureId);
        Assert.NotEmpty(mapped.CorrelationId);
    }
}