public void ThrowException_WhenCannotWalkToTarget(int startingPoint, int target)
{
var sut = new AmphipodSorter2(SAMPLE_LONG_MAP);
var exception = Assert.Throws <ArgumentException>(() => sut.MoveAmphipodFrom(startingPoint).To(target).OrFail());
Assert.Equal("Could not complete path", exception.Message);
}
public void ReturnTrue_WhenAskedToMoveToSamePlaceAsOrigin()
{
var sut = new AmphipodSorter2(SAMPLE_LONG_MAP);
var stayInSamePlace = sut.MoveAmphipodFrom(5).To(5).AndStopOnFail();
Assert.True(stayInSamePlace);
}
public void ThrowException_WhenThereIsNoAmphipodAtStartingPoint()
{
var sut = new AmphipodSorter2(SAMPLE_LONG_MAP);
var exception = Assert.Throws <ArgumentException>(() => sut.MoveAmphipodFrom(0).To(1).OrFail());
Assert.Equal("No amphipod there", exception.Message);
}
public void Walk22StepsInSolution()
{
var sut = new AmphipodSorter2(SAMPLE_LONG_MAP);
sut.MoveAmphipodFrom(23).To(26).OrFail();
sut.MoveAmphipodFrom(22).To(0).OrFail();
sut.MoveAmphipodFrom(17).To(25).OrFail();
sut.MoveAmphipodFrom(16).To(19).OrFail();
sut.MoveAmphipodFrom(15).To(1).OrFail();
sut.MoveAmphipodFrom(11).To(15).OrFail();
sut.MoveAmphipodFrom(10).To(16).OrFail();
sut.MoveAmphipodFrom(9).To(13).OrFail();
sut.MoveAmphipodFrom(8).To(7).OrFail();
sut.MoveAmphipodFrom(13).To(8).OrFail();
sut.MoveAmphipodFrom(19).To(9).OrFail();
sut.MoveAmphipodFrom(25).To(10).OrFail();
sut.MoveAmphipodFrom(21).To(17).OrFail();
sut.MoveAmphipodFrom(20).To(25).OrFail();
sut.MoveAmphipodFrom(7).To(20).OrFail();
sut.MoveAmphipodFrom(5).To(11).OrFail();
sut.MoveAmphipodFrom(4).To(21).OrFail();
sut.MoveAmphipodFrom(3).To(7).OrFail();
sut.MoveAmphipodFrom(1).To(3).OrFail();
sut.MoveAmphipodFrom(0).To(4).OrFail();
sut.MoveAmphipodFrom(7).To(22).OrFail();
sut.MoveAmphipodFrom(25).To(5).OrFail();
Assert.Equal(@"#############
#..........D#
###A#B#C#.###
#A#B#C#D#
#A#B#C#D#
#A#B#C#D#
#########", sut.ToString());
}
public void NeverReachFinalPosition_WhenInitialAmphipodListIsInvalid()
{
var flag = false;
var sut = new AmphipodSorter2(SAMPLE_LONG_MAP);
sut.OnFinalPositionReached((_, __) => flag = true);
sut.WalkWith(new [] { 0, 1 }, new System.Collections.Generic.List <(int From, int To)>());
Assert.False(flag);
}
public void StayInLastPosition_WhenCannotWalkToTarget()
{
var sut = new AmphipodSorter2(SAMPLE_LONG_MAP);
sut.MoveAmphipodFrom(5).To(11).AndStopOnFail();
Assert.Equal(@"#############
#...B.......#
###.#C#B#D###
#D#C#B#A#
#D#B#A#C#
#A#D#C#A#
#########", sut.ToString());
}
public void ReturnToStartingPoint_WhenCannotWalkToTarget(int startingPoint, int target)
{
var sut = new AmphipodSorter2(SAMPLE_LONG_MAP);
sut.MoveAmphipodFrom(startingPoint).To(target).OrReturnBack();
Assert.Equal(@"#############
#...........#
###B#C#B#D###
#D#C#B#A#
#D#B#A#C#
#A#D#C#A#
#########", sut.ToString());
}
public void WalkStep1InSolution()
{
var sut = new AmphipodSorter2(SAMPLE_LONG_MAP);
sut.MoveAmphipodFrom(23).To(26).OrFail();
Assert.Equal(@"#############
#..........D#
###B#C#B#.###
#D#C#B#A#
#D#B#A#C#
#A#D#C#A#
#########", sut.ToString());
}
public void Walk4StepsInSolution()
{
var sut = new AmphipodSorter2(SAMPLE_LONG_MAP);
sut.MoveAmphipodFrom(23).To(26).OrFail();
sut.MoveAmphipodFrom(22).To(0).OrFail();
sut.MoveAmphipodFrom(17).To(25).OrFail();
sut.MoveAmphipodFrom(16).To(19).OrFail();
Assert.Equal(@"#############
#A......B.BD#
###B#C#.#.###
#D#C#.#.#
#D#B#A#C#
#A#D#C#A#
#########", sut.ToString());
}
public void LoadLongMapCorrectly(string map)
{
var sut = new AmphipodSorter2(map);
Assert.Equal(map, sut.ToString());
}