public void TestClearEmptySquare()
{
Chess chess = new MockedChess();
Square square = new Square(Files.a, Ranks.one);
Assert.Throws <ArgumentException>(() => chess.Clear(square));
}
public void TestClear()
{
Chess chess = new MockedChess();
IPiece piece = new MockedPiece(false);
Square square = new Square(Files.a, Ranks.one);
chess.PlaceAt(square, piece);
chess.Clear(square);
Assert.Empty(chess.Position);
Assert.Throws <System.Collections.Generic.KeyNotFoundException>(() => chess.Position[square]);
}
