public async Task Get_UserId_Mongo_Test()
{
// Arrange
LetPortal.Identity.Stores.UserStore userStore = _context.GetUserStore();
// Act
string result = await userStore.GetUserIdAsync(_context.GenerateUser(), new System.Threading.CancellationToken());
userStore.Dispose();
// Assert
Assert.True(!string.IsNullOrEmpty(result));
}