public async Task UsersViewModel_Should_NOT_Validate_THESAME_Username()
{
//Arrange
var user = new Fixture().Create <User>();
var vm = new UsersViewModel();
await vm.AddItem(user);
//Act
var result = vm.ValidateUsername(user.Username);
//Assert
Assert.False(result);
}
public async Task UsersViewModel_Should_load_1_users_after_AddItem()
{
//Arrange
var user = new Fixture().Create <User>();
var vm = new UsersViewModel();
//Act
await vm.AddItem(user);
await vm.ExecuteLoadItemsCommand();
//Assert
Assert.AreEqual(1, vm.UserList.Count);
}