public void AssembleGeneratesCorrectValueIfOperandIsSecondOperand()
{
var operand = new IndirectNextWordOperand { NextWord = 0x20 };
const int Index = 1;
const ushort Shift = (ushort)(OpcodeWidth + (Index * OperandWidth));
Assert.That(
operand.AssembleOperand(Index), Is.EqualTo((ushort)((ushort)OperandType.OIndirectNextWord << Shift)));
}
public void ToStringReturnsOperandStringRepresentation()
{
var cpuStateManager = new Mock<ICpuStateOperations>();
var operand = new IndirectNextWordOperand();
cpuStateManager.Setup(m => m.IncrementProgramCounter()).Returns(0x1);
cpuStateManager.Setup(m => m.ReadMemoryValueAtAddress(0x1)).Returns(0x10);
operand.Process(cpuStateManager.Object);
var expected = string.Format("[0x{0:X4}]", 0x10);
Assert.That(operand.ToString(), Is.EqualTo(expected));
}
public void ProcessSetsNextWordAdressToNextInstruction()
{
var cpuStateManager = new Mock<ICpuStateOperations>();
var operand = new IndirectNextWordOperand();
cpuStateManager.Setup(m => m.IncrementProgramCounter()).Returns(0x1);
cpuStateManager.Setup(m => m.ReadMemoryValueAtAddress(0x1)).Returns(0x10);
operand.Process(cpuStateManager.Object);
cpuStateManager.Setup(m => m.ReadMemoryValueAtAddress(0x10));
operand.Read(cpuStateManager.Object);
cpuStateManager.VerifyAll();
}
public void AssembleGeneratesCorrectValueIfNextWordLessThan32AndOperandIsSecondOperand()
{
var operand = new IndirectNextWordOperand { NextWord = 0x10 };
const int Index = 1;
const ushort Shift = (ushort)(OpcodeWidth + (Index * OperandWidth));
Assert.That(
operand.AssembleOperand(Index), Is.EqualTo((ushort)((0x10 + OperandLiteralOffset) << Shift)));
}
