aswi2021bc304crew-gitlab/tests/Leuze.Tests.Configuration/TestWithDatabase.cs @ 678af8f3

using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Linq;
using System.Threading;

namespace Leuze.Tests.Configuration
{
    /// <summary>
    /// 
    /// </summary>
    public class TestWithDatabase : IDisposable
    {
        /// <summary>
        /// 
        /// </summary>
        protected DatabaseInMemoryFixture DatabaseFixture { get; private set; } = null!;

        /// <summary>
        /// 
        /// </summary>
        protected static readonly SemaphoreSlim _semaphore = new SemaphoreSlim(1, 1);

        /// <summary>
        /// 
        /// </summary>
        /// <param name="services"></param>
        public void Initialize(ServiceCollection services) => DatabaseFixture = new(services);

        /// <summary>
        /// 
        /// </summary>
        public void Dispose() => CleanTrackedEntities();

        /// <summary>
        /// 
        /// </summary>
        protected void CleanTrackedEntities()
        {
            var changedEntriesCopy = DatabaseFixture.Storage.ChangeTracker.Entries()
                .Where(e => e.State == EntityState.Added ||
                    e.State == EntityState.Modified ||
                    e.State == EntityState.Deleted)
                .ToList();
            foreach (var entity in changedEntriesCopy)
            {
                DatabaseFixture.Storage.Entry(entity.Entity).State = EntityState.Detached;
            }
        }
    }
}