public void Execute_WhenFlagTrue_ShouldSetProgramCounterToValue()
{
ushort expectedProgramCounter = 0x3141;
FlagsMock.SetupGet(f => f.GreaterThan).Returns(true);
var sut = CreateSut(expectedProgramCounter);
sut.Execute(CpuMock.Object);
RegistersMock.VerifySet(reg => reg.ProgramCounter = expectedProgramCounter);
}
public void Execute_WhenFlagFalse_ShouldNotSetProgramCounter()
{
ushort expectedProgramCounter = 0x3141;
FlagsMock.SetupGet(f => f.GreaterThan).Returns(false);
var sut = CreateSut(expectedProgramCounter);
sut.Execute(CpuMock.Object);
RegistersMock.VerifySet(reg => reg.ProgramCounter = expectedProgramCounter, Times.Never);
}
public void Execute_WhenInvoked_ShouldSetFlagsCorrectly(int lvalue, int rvalue, bool eq, bool lt, bool gt)
{
// CMP r1, 0xNNNN
byte leftRegister = 1;
RegistersMock.SetupGet(r => r[leftRegister]).Returns((ushort)lvalue);
var sut = CreateSut(leftRegister, (ushort)rvalue);
sut.Execute(CpuMock.Object);
FlagsMock.VerifySet(f => f.Equal = eq);
FlagsMock.VerifySet(f => f.GreaterThan = gt);
FlagsMock.VerifySet(f => f.LessThan = lt);
}
