public void TestIsSolvedWhenPuzzleIsComplete()
{
string solution = new string('1', 81);
PuzzleData puzzleData = new PuzzleData(solution, solution);
_sudoku = new Sudoku(puzzleData, new Point2D());
Assert.IsTrue(_sudoku.IsSolved());
}
public void TestIsNotSolvedWhenPuzzleIsIncomplete()
{
Assert.IsFalse(_sudoku.IsSolved());
}
public void TestIsSolvedWhenNoPuzzle()
{
_sudoku = new Sudoku(null, new Point2D());
Assert.IsTrue(_sudoku.IsSolved());
}