public void Update_UpdatesSpecifiedBox()
{
var p = new Puzzle(new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, 3, null /* 1 */, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, 2, 3 },
new int?[] { null /* 3 */, null /* 2 */, 2, 1 }
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerBoxRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
var coordTracker = new CoordinateTracker(puzzle.Size);
var coord = new Coordinate(1, 2);
int val = 1;
rule.Update(coord, val, coordTracker);
Assert.Equal(
new HashSet <Coordinate> {
new Coordinate(0, 2), new Coordinate(1, 3)
},
new HashSet <Coordinate>(coordTracker.TrackedCoords.ToArray()));
Assert.Equal(new BitVector(0b0100), rule.GetPossibleValues(new Coordinate(0, 0)));
Assert.Equal(new BitVector(0b1100), rule.GetPossibleValues(new Coordinate(0, 2)));
Assert.Equal(new BitVector(0b1110), rule.GetPossibleValues(new Coordinate(2, 0)));
Assert.Equal(new BitVector(0b0000), rule.GetPossibleValues(new Coordinate(2, 2)));
}
public void Revert_RevertsSpecifiedBox()
{
var p = new Puzzle(new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, 3, null /* 1 */, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, 2, 3 },
new int?[] { null /* 3 */, null /* 2 */, 2, 1 }
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerBoxRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
IList <BitVector> initialPossibleValuesByBox = _GetPossibleValuesByBox(puzzle.Size, rule);
var updatedCoordTracker = new CoordinateTracker(puzzle.Size);
var coord = new Coordinate(1, 2);
int val = 1;
rule.Update(in coord, val, updatedCoordTracker);
var revertedCoordTracker = new CoordinateTracker(puzzle.Size);
rule.Revert(coord, val, revertedCoordTracker);
Assert.Equal(
updatedCoordTracker.TrackedCoords.ToArray(),
revertedCoordTracker.TrackedCoords.ToArray());
for (int box = 0; box < initialPossibleValuesByBox.Count; box++)
{
Assert.Equal(
initialPossibleValuesByBox[box],
rule.GetMissingValuesForBox(box));
}
}
private IList <BitVector> _GetPossibleValuesByBox(int numBoxes, MaxCountPerBoxRule rule)
{
var possibleBoxValues = new List <BitVector>();
for (int box = 0; box < numBoxes; box++)
{
possibleBoxValues.Add(rule.GetMissingValuesForBox(box));
}
return(possibleBoxValues);
}
public void TryInit_WithDuplicateValueInBox_Fails()
{
var p = new Puzzle(new int?[][] {
new int?[] { 1, 1 /* INCORRECT */, null /* 3 */, 2 },
new int?[] { null /* 2 */, 3, null /* 1 */, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, 2, 3 },
new int?[] { null /* 3 */, null /* 2 */, 2, 1 }
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerBoxRule();
Assert.False(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
}
public void TryInit_ValidPuzzle_FiltersCorrectly()
{
var p = new Puzzle(new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, 3, null /* 1 */, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, 2, 3 },
new int?[] { null /* 3 */, null /* 2 */, 2, 1 }
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerBoxRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
Assert.Equal(new BitVector(0b0100), rule.GetPossibleValues(new Coordinate(0, 0)));
Assert.Equal(new BitVector(0b1110), rule.GetPossibleValues(new Coordinate(0, 2)));
Assert.Equal(new BitVector(0b1110), rule.GetPossibleValues(new Coordinate(2, 0)));
Assert.Equal(new BitVector(0b00000), rule.GetPossibleValues(new Coordinate(2, 2)));
}
public void CopyWithNewReference_CreatesDeepCopy()
{
var p = new Puzzle(new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, 3, null /* 1 */, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, 2, 3 },
new int?[] { null /* 3 */, null /* 2 */, 2, 1 }
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerBoxRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
var puzzleCopy = new PuzzleWithPossibleValues(puzzle);
IRule ruleCopy = rule.CopyWithNewReference(puzzleCopy);
int val = 3;
var coord = new Coordinate(3, 0);
ruleCopy.Update(coord, val, new CoordinateTracker(puzzle.Size));
Assert.NotEqual(rule.GetPossibleValues(coord), ruleCopy.GetPossibleValues(coord));
puzzleCopy[coord] = val;
var secondCoord = new Coordinate(3, 1);
int secondVal = 2;
var coordTracker = new CoordinateTracker(puzzle.Size);
ruleCopy.Update(secondCoord, secondVal, coordTracker);
var originalCoordTracker = new CoordinateTracker(puzzle.Size);
rule.Update(secondCoord, secondVal, originalCoordTracker);
Assert.Equal(
new HashSet <Coordinate> {
new Coordinate(2, 0), new Coordinate(2, 1)
},
new HashSet <Coordinate>(coordTracker.TrackedCoords.ToArray()));
Assert.Equal(
new HashSet <Coordinate> {
new Coordinate(2, 0), new Coordinate(2, 1), new Coordinate(3, 0)
},
new HashSet <Coordinate>(originalCoordTracker.TrackedCoords.ToArray()));
}
public void GetPossibleValues_MatchesGetPossibleBoxValues()
{
var puzzle = new PuzzleWithPossibleValues(new int?[][] {
new int?[] { 1, null /* 4 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, null /* 3 */, null /* 1 */, 4 },
new int?[] { null /* 4 */, 1, null /* 2 */, 3 },
new int?[] { 3, null /* 2 */, null /* 4 */, 1 }
});
var rule = new MaxCountPerBoxRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
for (int row = 0; row < puzzle.Size; row++)
{
for (int column = 0; column < puzzle.Size; column++)
{
int box = Boxes.CalculateBoxIndex(new(row, column), Boxes.IntSquareRoot(puzzle.Size));
Assert.Equal(
rule.GetMissingValuesForBox(box),
rule.GetPossibleValues(new Coordinate(row, column)));
}
}
}
public void UpdateAndRevert_WithDuplicateValues()
{
var p = new Puzzle(new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, 3, null /* 1 */, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, 2, 3 },
new int?[] { null /* 3 */, null /* 2 */, 2, 1 }
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerBoxRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
var coordTracker = new CoordinateTracker(puzzle.Size);
rule.Update(new Coordinate(2, 0), 2, coordTracker);
Assert.Equal(new BitVector(0b1110), rule.GetPossibleValues(new Coordinate(2, 0)));
rule.Update(new Coordinate(3, 1), 2, coordTracker);
Assert.Equal(new BitVector(0b1010), rule.GetPossibleValues(new Coordinate(2, 0)));
rule.Revert(new Coordinate(3, 1), 2, coordTracker);
Assert.Equal(new BitVector(0b1110), rule.GetPossibleValues(new Coordinate(2, 0)));
rule.Revert(new Coordinate(2, 0), 2, coordTracker);
Assert.Equal(new BitVector(0b1110), rule.GetPossibleValues(new Coordinate(2, 0)));
}
