public RegisterPageViewModel()
{
Login = new Command(async() =>
{
if (await SQLiteDB.GetUserAsync(Usuario, Contraseña) is User)
{
await AlertAsync("Usuario no disponible", "El usuario que intenta registrar ya existe en la base de datos.", "Ok");
}
else
{
if (Usuario.Length < 4 || Usuario.Length > 12)
{
await AlertAsync("Usuario inválido", "El usuario debe tener de 4 a 12 caracteres.", "Ok");
return;
}
if (Contraseña.Length < 4 || Contraseña.Length > 12)
{
await AlertAsync("Contraseña inválida", "La contraseña debe tener de 4 a 12 caracteres.", "Ok");
return;
}
SQLiteDB.Usuario = await SQLiteDB.RegisterAsync(Usuario, Contraseña);
await AlertAsync("¡Registro exitoso!", "Su usuario ha sido registrado exitosamente.", "Ok");
Push.Execute(typeof(WelcomePage));
}
});
}
public override IList <string> Execute(Stack stack)
{
var assemblyInstructions = new List <string>();
//Reset Function of context
if (_context.FunctionNames.Count > 0)
{
_context.FunctionNames.Pop();
}
//Set Function of context
_context.FunctionNames.Push(_functionName);
//Declare a Label Symbol for the function entry
assemblyInstructions.Add($"({_functionName})");
//Allocate space on the stack for local variables, initialised to 0
var push = new Push(_context, "constant", "0");
var pushAssemblyInstructions = push.Execute(stack);
for (int i = 0; i < _k_localVariables; i++)
{
assemblyInstructions.AddRange(pushAssemblyInstructions);
}
return(assemblyInstructions);
}
public void Push_PushesValueOntoStack()
{
// Arrange
var encoder = new Mock<IEncoder>();
var stack = new Mock<IStack>();
var context = new ExecutionContext
{
Encoder = encoder.Object,
Stack = stack.Object
};
var instruction = new Instruction { Operand = 12345 };
var pusher = new Push();
// Act
pusher.Execute(context, instruction);
// Assert
stack.Verify(s => s.Push(It.IsAny<UInt64>()), Times.Once);
}
public void Push_EncodesADataInstructionWithGivenOperand()
{
// Arrange
var encoder = new Mock<IEncoder>();
var stack = new Mock<IStack>();
var context = new ExecutionContext
{
Encoder = encoder.Object,
Stack = stack.Object
};
var instruction = new Instruction { Operand = 12345 };
var pusher = new Push();
// Act
pusher.Execute(context, instruction);
// Assert
encoder.Verify(e => e.Encode(It.Is<Instruction>(i => i.Operand == instruction.Operand && i.Type == InstructionType.Data)));
}
