public void Revert_RevertsSpecifiedRow()
{
var p = new Puzzle(
new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, null /* 3 */, 1, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, null /* 2 */, null /* 3 */ },
new int?[] { 3, 2, 2, 1 },
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerRowRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
IList <BitVector> initialPossibleValuesByRow = _GetPossibleValuesByRow(puzzle.Size, rule);
var updatedCoordTracker = new CoordinateTracker(puzzle.Size);
var revertedCoordTracker = new CoordinateTracker(puzzle.Size);
var coord = new Coordinate(1, 1);
int val = 3;
rule.Update(coord, val, updatedCoordTracker);
rule.Revert(coord, val, revertedCoordTracker);
Assert.Equal(
updatedCoordTracker.TrackedCoords.ToArray(),
revertedCoordTracker.TrackedCoords.ToArray());
for (int row = 0; row < initialPossibleValuesByRow.Count; row++)
{
Assert.Equal(
initialPossibleValuesByRow[row],
rule.GetMissingValuesForRow(row));
}
}
public void Update_UpdatesSpecifiedRow()
{
var p = new Puzzle(
new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, null /* 3 */, 1, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, null /* 2 */, null /* 3 */ },
new int?[] { 3, 2, 2, 1 },
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerRowRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
var coordTracker = new CoordinateTracker(puzzle.Size);
var coord = new Coordinate(1, 1);
int val = 3;
rule.Update(coord, val, coordTracker);
Assert.Equal(
new HashSet <Coordinate> {
new Coordinate(1, 0), new Coordinate(1, 3)
},
new HashSet <Coordinate>(coordTracker.TrackedCoords.ToArray()));
Assert.Equal(new BitVector(0b1100), rule.GetPossibleValues(new Coordinate(0, 0)));
Assert.Equal(new BitVector(0b0100), rule.GetPossibleValues(new Coordinate(1, 0)));
Assert.Equal(new BitVector(0b1110), rule.GetPossibleValues(new Coordinate(2, 0)));
Assert.Equal(new BitVector(0b0000), rule.GetPossibleValues(new Coordinate(3, 0)));
}
public void UpdateAndRevert_WithDuplicatePossibleValue()
{
var p = new Puzzle(
new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, null /* 3 */, 1, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, null /* 2 */, null /* 3 */ },
new int?[] { 3, 2, 2, 1 },
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerRowRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
var coordTracker = new CoordinateTracker(puzzle.Size);
rule.Update(new Coordinate(1, 0), 2, coordTracker);
Assert.Equal(new BitVector(0b1100), rule.GetPossibleValues(new Coordinate(1, 0)));
rule.Update(new Coordinate(1, 3), 2, coordTracker);
Assert.Equal(new BitVector(0b1000), rule.GetPossibleValues(new Coordinate(1, 0)));
rule.Revert(new Coordinate(1, 3), 2, coordTracker);
Assert.Equal(new BitVector(0b1100), rule.GetPossibleValues(new Coordinate(1, 0)));
rule.Revert(new Coordinate(1, 0), 2, coordTracker);
Assert.Equal(new BitVector(0b1100), rule.GetPossibleValues(new Coordinate(1, 0)));
}
public void TryInit_WithTooManyValuesInRow_Fails()
{
var p = new Puzzle(
new int?[][] {
new int?[] { 1, /* INCORRECT */ 1, null /* 3 */, 2 },
new int?[] { null /* 2 */, null /* 3 */, 1, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, null /* 2 */, null /* 3 */ },
new int?[] { 3, 2, 2, 1 }
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerRowRule();
Assert.False(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
}
public void TryInit_FiltersCorrectly()
{
var p = new Puzzle(new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, null /* 3 */, 1, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, null /* 2 */, null /* 3 */ },
new int?[] { 3, 2, 2, 1 }
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerRowRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
Assert.Equal(new BitVector(0b1100), rule.GetPossibleValues(new Coordinate(0, 0)));
Assert.Equal(new BitVector(0b1100), rule.GetPossibleValues(new Coordinate(1, 0)));
Assert.Equal(new BitVector(0b1110), rule.GetPossibleValues(new Coordinate(2, 0)));
Assert.Equal(new BitVector(0b0000), rule.GetPossibleValues(new Coordinate(3, 0)));
}
public void CopyWithNewReference_CreatesDeepCopy()
{
var p = new Puzzle(
new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, null /* 3 */, 1, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, null /* 2 */, null /* 3 */ },
new int?[] { 3, 2, 2, 1 },
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerRowRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
var puzzleCopy = new PuzzleWithPossibleValues(puzzle);
IRule ruleCopy = rule.CopyWithNewReference(puzzleCopy);
int val = 3;
var coord = new Coordinate(1, 1);
ruleCopy.Update(coord, val, new CoordinateTracker(puzzle.Size));
Assert.NotEqual(rule.GetPossibleValues(coord), ruleCopy.GetPossibleValues(coord));
puzzleCopy[coord] = val;
var secondCoord = new Coordinate(1, 0);
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(1, 3)
},
new HashSet <Coordinate>(coordTracker.TrackedCoords.ToArray()));
Assert.Equal(
new HashSet <Coordinate> {
new Coordinate(1, 1), new Coordinate(1, 3)
},
new HashSet <Coordinate>(originalCoordTracker.TrackedCoords.ToArray()));
}
public void GetPossibleValues_MatchesGetMissingValuesForRow()
{
var p = new Puzzle(
new int?[][] {
new int?[] { 1, null /* 2 */, null /* 3 */, 2 },
new int?[] { null /* 2 */, null /* 3 */, 1, null /* 2 */ },
new int?[] { null /* 2 */, null /* 1 */, null /* 2 */, null /* 3 */ },
new int?[] { 3, 2, 2, 1 },
}, new int[] { 1, 2, 2, 3 });
var puzzle = new PuzzleWithPossibleValues(p);
var rule = new MaxCountPerRowRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
for (int row = 0; row < puzzle.Size; row++)
{
for (int col = 0; col < puzzle.Size; col++)
{
Assert.Equal(
rule.GetMissingValuesForRow(row),
rule.GetPossibleValues(new Coordinate(row, col)));
}
}
}