public void Update_UpdatesSpecifiedColumn()
{
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 ColumnUniquenessRule();
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(0, 1), new Coordinate(3, 1)
},
new HashSet <Coordinate>(coordTracker.TrackedCoords.ToArray()));
Assert.Equal(new BitVector(0b10100), rule.GetPossibleValues(new Coordinate(0, 0)));
Assert.Equal(new BitVector(0b10100), rule.GetPossibleValues(new Coordinate(0, 1)));
Assert.Equal(new BitVector(0b11110), rule.GetPossibleValues(new Coordinate(0, 2)));
Assert.Equal(new BitVector(0b00000), rule.GetPossibleValues(new Coordinate(0, 3)));
}
public void Revert_RevertsSpecifiedColumn()
{
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 ColumnUniquenessRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
IList <BitVector> initialPossibleValuesByColumn = _GetPossibleValuesByColumn(puzzle.Size, rule);
var updatedCoordTracker = new CoordinateTracker(puzzle.Size);
var coord = new Coordinate(1, 1);
int val = 3;
rule.Update(coord, val, updatedCoordTracker);
var revertedCoordTracker = new CoordinateTracker(puzzle.Size);
rule.Revert(coord, val, revertedCoordTracker);
Assert.Equal(
updatedCoordTracker.TrackedCoords.ToArray(),
revertedCoordTracker.TrackedCoords.ToArray());
for (int column = 0; column < initialPossibleValuesByColumn.Count; column++)
{
Assert.Equal(
initialPossibleValuesByColumn[column],
rule.GetMissingValuesForColumn(column));
}
}
public void TryInit_WithDuplicateValueInColumn_Fails()
{
var puzzle = new PuzzleWithPossibleValues(
new int?[][] {
new int?[] { 1, null /* 4 */, null /* 3 */, 2 },
new int?[] { /* INCORRECT */ 1, null /* 3 */, null /* 1 */, 4 },
new int?[] { null /* 4 */, 1, null /* 2 */, 3 },
new int?[] { 3, null /* 2 */, null /* 4 */, 1 }
});
var rule = new ColumnUniquenessRule();
Assert.False(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
}
public void TryInit_FiltersCorrectly()
{
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 ColumnUniquenessRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
Assert.Equal(new BitVector(0b10100), rule.GetPossibleValues(new Coordinate(0, 0)));
Assert.Equal(new BitVector(0b11100), rule.GetPossibleValues(new Coordinate(0, 1)));
Assert.Equal(new BitVector(0b11110), rule.GetPossibleValues(new Coordinate(0, 2)));
Assert.Equal(new BitVector(0b00000), rule.GetPossibleValues(new Coordinate(0, 3)));
}
public void CopyWithNewReference_CreatesDeepCopy()
{
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 ColumnUniquenessRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
var puzzleCopy = new PuzzleWithPossibleValues(puzzle);
IRule ruleCopy = rule.CopyWithNewReference(puzzleCopy);
int val = 4;
var coord = new Coordinate(3, 2);
ruleCopy.Update(coord, val, new CoordinateTracker(puzzle.Size));
Assert.NotEqual(rule.GetPossibleValues(coord), ruleCopy.GetPossibleValues(coord));
puzzleCopy[coord] = val;
var secondCoord = new Coordinate(2, 2);
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(0, 2), new Coordinate(1, 2)
},
new HashSet <Coordinate>(coordTracker.TrackedCoords.ToArray()));
Assert.Equal(
new HashSet <Coordinate> {
new Coordinate(0, 2), new Coordinate(1, 2), new Coordinate(3, 2)
},
new HashSet <Coordinate>(originalCoordTracker.TrackedCoords.ToArray()));
}
public void GetPossibleValues_MatchesGetPossibleColumnValues()
{
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 ColumnUniquenessRule();
Assert.True(rule.TryInit(puzzle, puzzle.UniquePossibleValues));
IList <BitVector> possibleValuesByColumn = _GetPossibleValuesByColumn(puzzle.Size, rule);
for (int column = 0; column < possibleValuesByColumn.Count; column++)
{
for (int row = 0; row < puzzle.Size; row++)
{
Assert.Equal(
possibleValuesByColumn[column],
rule.GetPossibleValues(new Coordinate(row, column)));
}
}
}