public void WriteToMemory_OutsideValidMemoryRange_ThrowsException(ushort initialI)
{
var cpu = new Cpu {
I = initialI
};
var decodedInstruction = new DecodedInstruction(0xFA33);
var instruction = new Instruction_Fx33(decodedInstruction);
Assert.Throws <InvalidOperationException>(() => instruction.Execute(cpu, MockedDisplay, MockedKeyboard));
}
public void Executing_Instruction_Fx33_WorksAsExpected(byte vx, ushort initialIValue, byte expectedHundreds, byte expectedTens, byte expectedOnes)
{
var cpu = new Cpu {
I = initialIValue
};
var decodedInstruction = new DecodedInstruction(0xFA33);
cpu.V[decodedInstruction.x] = vx;
var instruction = new Instruction_Fx33(decodedInstruction);
instruction.Execute(cpu, MockedDisplay, MockedKeyboard);
Assert.That(cpu.Memory[initialIValue], Is.EqualTo(expectedHundreds));
Assert.That(cpu.Memory[initialIValue + 1], Is.EqualTo(expectedTens));
Assert.That(cpu.Memory[initialIValue + 2], Is.EqualTo(expectedOnes));
Assert.That(cpu.I, Is.EqualTo(initialIValue + 2));
Assert.That(instruction.Mnemonic, Is.EqualTo($"LD B, V{decodedInstruction.x:X}"));
}