public void GetByIdShouldReturnCorrectMod() { var options = new DbContextOptionsBuilder <ApplicationDbContext>() .UseInMemoryDatabase(databaseName: "GetByIdShouldReturnCorrectMod_DB") .Options; var dbContext = new ApplicationDbContext(options); var modService = new ModService(dbContext); var mod = new Mod { Name = "DevilSwordNero", }; dbContext.Mods.Add(mod); dbContext.SaveChanges(); var test = modService.GetById(mod.Id); Assert.Equal(mod.Name, test.Name); }