public void Fill()
{
// Create a mock object for a fillable board where all ship locations are possible.
var boardMock = new Mock <IFillableBoard>();
boardMock.Setup(b => b.TryPlaceShip(It.IsAny <BoardIndex>(), It.IsAny <int>(), It.IsAny <Direction>()))
.Returns(true);
var rbf = new RandomBoardFiller();
rbf.Fill(new[] { 2, 3, 4 }, boardMock.Object);
// Verify that three ships have been placed
boardMock.Verify(b => b.TryPlaceShip(It.IsAny <BoardIndex>(), It.IsAny <int>(), It.IsAny <Direction>()),
Times.Exactly(3));
}
public void Fill_Failure()
{
// Create a mock object for a fillable board where no ship locations are possible.
var boardMock = new Mock <IFillableBoard>();
boardMock.Setup(b => b.TryPlaceShip(It.IsAny <BoardIndex>(), It.IsAny <int>(), It.IsAny <Direction>()))
.Returns(false);
var rbf = new RandomBoardFiller();
Assert.Throws <BoardTooOccupiedException>(() => rbf.Fill(new[] { 2 }, boardMock.Object));
// Verify that 1000 attempts were made to pace the ship
boardMock.Verify(b => b.TryPlaceShip(It.IsAny <BoardIndex>(), It.IsAny <int>(), It.IsAny <Direction>()),
Times.Exactly(1000));
}