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));
}
}
private IList <BitVector> _GetPossibleValuesByColumn(int numColumns, ColumnUniquenessRule rule)
{
var possibleColumnValues = new List <BitVector>();
for (int column = 0; column < numColumns; column++)
{
possibleColumnValues.Add(rule.GetMissingValuesForColumn(column));
}
return(possibleColumnValues);
}
public void Revert_WithoutAffectedCoordsList_RevertsSpecifiedColumn()
{
var puzzle = new Puzzle(new int?[, ] {
{ 1, null /* 4 */, null /* 3 */, 2 },
{ null /* 2 */, null /* 3 */, null /* 1 */, 4 },
{ null /* 4 */, 1, null /* 2 */, 3 },
{ 3, null /* 2 */, null /* 4 */, 1 }
});
var rule = new ColumnUniquenessRule(puzzle, _GetAllPossibleValues(puzzle.Size));
IList <BitVector> initialPossibleValuesByColumn = _GetPossibleValuesByColumn(puzzle.Size, rule);
var coord = new Coordinate(1, 1);
int val = 3;
rule.Update(coord, val, new CoordinateTracker(puzzle.Size));
rule.Revert(coord, val);
for (int column = 0; column < initialPossibleValuesByColumn.Count; column++)
{
Assert.Equal(
initialPossibleValuesByColumn[column],
rule.GetMissingValuesForColumn(column));
}
}