public void BuildWhenCalledOnRegisterOperandBuilderCreatesRegisterOperand()
{
var builder = new RegisterOperandBuilder();
var token = new LabelToken { Content = "A" };
var operand = builder.Build(token);
Assert.That(operand, Is.TypeOf(typeof(RegisterOperand)));
}
public void BuildWhenCalledOnLabelReferenceOperandBuilderCreatesNextWordOperand()
{
var builder = new LabelReferenceOperandBuilder();
var token = new LabelToken { Content = "label" };
var operand = builder.Build(token);
Assert.That(operand, Is.TypeOf(typeof(NextWordOperand)));
}
public void BuildWhenCalledOnLabelReferenceOperandBuilderSetsLabelToTokenContent()
{
var builder = new LabelReferenceOperandBuilder();
var token = new LabelToken { Content = "label" };
var operand = builder.Build(token);
Assert.That(operand.Label == "label");
}
public void BuildWhenCalledOnIndirectRegisterOperandBuilderSetsRegisterValueToCorrespondingRegisterIdentifierForRegister()
{
var builder = new IndirectRegisterOperandBuilder();
var token = new LabelToken { Content = "J" };
var operand = builder.Build(token);
Assert.That(operand.RegisterValue, Is.EqualTo((int)RegisterIdentifier.RegJ));
}
public void BuildWhenCalledOnRegisterOperandBuilderThrowsForInvalidRegiterName()
{
var builder = new RegisterOperandBuilder();
var token = new LabelToken { Content = "AX" };
Assert.Throws<Exception>(() => builder.Build(token));
}
public void MatchWhenCalledWithLabelReturnsTokenPosition()
{
var tokenMatcher = new LabelToken();
Assert.That(tokenMatcher.Match(":label"), Is.EqualTo(":label"));
}
