public void Part1Test()
{
// Given
var program = HandheldProgram.Parse(Input.Get(8));
var computer = new HandheldComputer(program);
var accumulator = computer.Accumulator;
var visited = new HashSet <int>();
// When
while (!visited.Contains(computer.ProgramCounter))
{
accumulator = computer.Accumulator;
visited.Add(computer.ProgramCounter);
computer.Step();
}
// Then
Assert.Equal(5, accumulator);
}
public void Part2Test()
{
// Given
var program = HandheldProgram.Parse(Input.Get(8));
for (var i = 0; i < program.Instructions.Count(); i++)
{
// When
var modified = Day08.ModifyProgram(program, i);
if (modified is null)
{
continue;
}
var computer = new HandheldComputer(modified);
var accumulator = computer.Accumulator;
var visited = new HashSet <int>();
while (!computer.IsHalted && !visited.Contains(computer.ProgramCounter))
{
accumulator = computer.Accumulator;
visited.Add(computer.ProgramCounter);
computer.Step();
}
// Then
if (i == 7)
{
Assert.True(computer.IsHalted);
Assert.Equal(8, accumulator);
}
else
{
Assert.False(computer.IsHalted);
}
}
}
