public void ToStringReturnsOperandStringRepresentation()
{
var cpuStateManager = new Mock<ICpuStateOperations>();
var operand = new IndirectNextWordOffsetOperand();
cpuStateManager.Setup(m => m.IncrementProgramCounter()).Returns(0x1);
cpuStateManager.Setup(m => m.ReadMemoryValueAtAddress(0x1)).Returns(0x10);
cpuStateManager.Setup(m => m.ReadGeneralPursoseRegisterValue(0x0)).Returns(0x0);
operand.Process(cpuStateManager.Object);
var expected = string.Format(
"[{0}+{1}={2}]", string.Format("0x{0:X4}", 0x10), "A", string.Format("0x{0:X4}", 0x0));
Assert.That(operand.ToString(), Is.EqualTo(expected));
}
public void ProcessSetsNextWordAdressToNextInstruction()
{
var cpuStateManager = new Mock<ICpuStateOperations>();
var operand = new IndirectNextWordOffsetOperand();
cpuStateManager.Setup(m => m.IncrementProgramCounter()).Returns(0x1);
cpuStateManager.Setup(m => m.ReadMemoryValueAtAddress(0x1)).Returns(0x10);
cpuStateManager.Setup(m => m.ReadGeneralPursoseRegisterValue(0x0)).Returns(0x0);
operand.Process(cpuStateManager.Object);
cpuStateManager.Setup(m => m.ReadMemoryValueAtAddress(0x10));
operand.Read(cpuStateManager.Object);
cpuStateManager.VerifyAll();
}
public void AssembleGeneratesCorrectValueIfOperandIsFirstOperand()
{
var operand = new IndirectNextWordOffsetOperand { RegisterValue = 0 };
const int Index = 0;
const ushort Shift = (ushort)(OpcodeWidth + (Index * OperandWidth));
Assert.That(
operand.AssembleOperand(Index), Is.EqualTo((ushort)(((ushort)OperandType.OIndirectNextWordOffset + 0) << Shift)));
}
