public void Setting_IRegister_OutsideValidMemoryRange_ThrowsException(byte vxValue, ushort iValue)
{
var cpu = new Cpu {
I = iValue
};
var decodedInstruction = new DecodedInstruction(0xFA1E);
cpu.V[decodedInstruction.x] = vxValue;
var instruction = new Instruction_Fx1E(decodedInstruction);
Assert.Throws <InvalidOperationException>(() => instruction.Execute(cpu, MockedDisplay, MockedKeyboard));
}
public void Executing_Instruction_Fx1E_WorksAsExpected(byte vxValue, ushort iValue, ushort expectedIValue)
{
var cpu = new Cpu {
I = iValue
};
var decodedInstruction = new DecodedInstruction(0xFA1E);
cpu.V[decodedInstruction.x] = vxValue;
var instruction = new Instruction_Fx1E(decodedInstruction);
instruction.Execute(cpu, MockedDisplay, MockedKeyboard);
Assert.That(cpu.I, Is.EqualTo(expectedIValue));
Assert.That(instruction.Mnemonic, Is.EqualTo($"ADD I, V{decodedInstruction.x:X}"));
}