public bool Save(T entity)
    {
        entity = new T();

        AllItem.Add(entity);

        return true;
    }

List<AccountModel> Accounts = new List<AccountModel>();

    private BaseServices<AccountModel> AccountBS = new BaseServices<AccountModel>();

    Random rnd = new Random();

    private int SomeId;

    private int AccountsLenth;

    [TestInitialize]
    public void Repletion()
    {
        SomeId = rnd.Next(100);

        for (int index = 0; index < 100; ++index)
        {
            AccountBS.AllItem.Add(new AccountModel { Id = index });
        }

        AccountsLenth = Accounts.Count;
    }

    [TestMethod]
    public void GetTest()
    {
        AccountModel result = AccountBS.Get(SomeId);

        Assert.IsNotNull(result);
    }

    [TestMethod]
    public void DeleteBoolTest()
    {
        bool result = AccountBS.Delete(SomeId);

        Assert.IsTrue(result);
    }

    [TestMethod]
    public void SaveBoolTest()
    {
        var ent = new AccountModel();

        bool result = AccountBS.Save(ent);

        Assert.IsTrue(result);
    }

    [TestMethod]
    public void SaveCountTest()
    {
        var ent = new AccountModel();

        AccountBS.Save(ent);

        int AccountsLenth1 = Accounts.Count;

        Assert.AreNotEqual(AccountsLenth, this.Accounts.Count);
    }
}