public void Constructor_PassedListOfKnownAndUnknownSquares_NeverSetsAnyWhiteSquares()
{
var partiallyComplete = new PartiallyCompleteGroup(2, "1.");
var initialWhiteBits = partiallyComplete.GetWhiteSquares();
Assert.That(initialWhiteBits.Count, Is.EqualTo(0));
}
public void Constructor_PassedListOfUnknownSquares_CreatesGroupWithNoKnownBlackSquares()
{
var partiallyComplete = new PartiallyCompleteGroup(2, "..");
var initialBlackBits = partiallyComplete.GetBlackSquares();
Assert.That(initialBlackBits.Count, Is.EqualTo(0));
}
public ISolvedSquaresResult SolveSquares(IPartiallyCompleteGroup partiallyCompleteForGroup)
{
var filteredCombinations = this.FilterCombinations(partiallyCompleteForGroup);
if (filteredCombinations.Count == 0)
{
return new CantBeSolvedResult();
}
if (filteredCombinations.Count == 1)
{
return new SolvedSquares.SolvedSquaresResult(filteredCombinations.First());
}
var partiallyComplete = new PartiallyCompleteGroup(filteredCombinations.First());
foreach (var possibleCombination in filteredCombinations)
{
partiallyComplete = partiallyComplete.Merge(new PartiallyCompleteGroup(possibleCombination));
}
if (partiallyComplete.Equals(partiallyCompleteForGroup))
{
return new NothingSolvedThisRoundResult(partiallyCompleteForGroup);
}
return new PartiallySolvedSquaresResult(partiallyComplete);
}
public void SetBlack_WhenSquareIsAlreadyBlack_AppliesNoChange()
{
var partiallyComplete = new PartiallyCompleteGroup(10, "1.");
var initialBlackSquares = partiallyComplete.GetBlackSquares();
var squareIndex = 0;
partiallyComplete.SetSquareBlack(squareIndex);
var blackBits = partiallyComplete.GetBlackSquares();
Assert.That(blackBits, Is.EqualTo(initialBlackSquares));
}
public void SetBlack_WhenNoSquaresAreBlack_SetsUnknownBitToKnown()
{
var partiallyComplete = new PartiallyCompleteGroup(10, "..");
var squareIndex = 0;
partiallyComplete.SetSquareBlack(squareIndex);
var blackBits = partiallyComplete.GetBlackSquares();
Assert.That(blackBits.Count, Is.EqualTo(1));
Assert.That(blackBits.First(), Is.EqualTo(squareIndex));
}
public void Constructor_MapsColumnValuesToRows()
{
var c1 = new PartiallyCompleteGroup(2, "11");
var c2 = new PartiallyCompleteGroup(2, "11");
var r1 = new PartiallyCompleteGroup(2, "..");
var r2 = new PartiallyCompleteGroup(2, "..");
var grid = new GridPartialSolution(
new List<IPartiallyCompleteGroup>() { r1, r2 },
new List<IPartiallyCompleteGroup>() { c1, c2 });
for (int rowId = 0; rowId < 2; rowId++)
{
var row = grid.GetRow(rowId);
Assert.That(row.GetBlackSquares().Count, Is.EqualTo(2));
}
}
public void Constructor_MapsRowValuesToColumns()
{
var r1 = new PartiallyCompleteGroup(2, "11");
var r2 = new PartiallyCompleteGroup(2, "11");
var c1 = new PartiallyCompleteGroup(2, "..");
var c2 = new PartiallyCompleteGroup(2, "..");
var grid = new GridPartialSolution(
new List<IPartiallyCompleteGroup>() { r1, r2 },
new List<IPartiallyCompleteGroup>() { c1, c2 });
for (int columnId = 0; columnId < 2; columnId++)
{
var column = grid.GetColumn(columnId);
Assert.That(column.GetBlackSquares().Count, Is.EqualTo(2));
}
}
public PartiallyCompleteGroup Merge(PartiallyCompleteGroup other)
{
var blacks = this.blackBits & other.blackBits;
var whites = this.whiteBits & other.whiteBits;
return new PartiallyCompleteGroup(blacks, whites);
}
public PartiallySolvedSquaresResult(PartiallyCompleteGroup partiallyComplete)
{
this.partiallyComplete = partiallyComplete;
}
