func TestGoesForTheWin(t *testing.T) {
board := board.NewBoard(rules.THREE_BY_THREE)
impossiblePlayer := ImpossiblePlayer{Mark: rules.SECOND_PLAYER}
testhelper.AddMarkToPositions(board, rules.FIRST_PLAYER, 0, 5, 2)
testhelper.AddMarkToPositions(board, rules.SECOND_PLAYER, 1, 4)
assert.Equal(t, 7, impossiblePlayer.GetMove(board, rules.SECOND_PLAYER, rules.FIRST_PLAYER))
}
func GameTick(playerOneType, playerTwoType string, boardSize int, movesPlayed []int) gamestate.GameState {
playerOne := createFirstPlayer(playerOneType)
playerTwo := createSecondPlayer(playerTwoType)
board := board.NewBoard(boardSize)
rebuildBoard(board, movesPlayed)
return gamestate.GameState{
MovesPlayed: takeTurn(board, playerOne, playerTwo, movesPlayed),
PlayerOneType: playerOneType,
PlayerTwoType: playerTwoType,
CurrentPlayer: gamestate.GetCurrentPlayer(board, playerOne, playerTwo),
BoardSize: boardSize,
BoardState: board.Slots,
Board: board,
}
}
func TestItHasAWinnerIfSameMarkInRightToLeftDiagonal(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, FIRST_PLAYER, 2, 4, 6)
assert.True(t, DiagonalWinner(board, FIRST_PLAYER))
}
func TestNoDiagonalWinnerIfBoardEmpty(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
assert.False(t, DiagonalWinner(board, FIRST_PLAYER))
}
func TestItHasAWinnerIfSameMarkInThirdColumn(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, FIRST_PLAYER, 2, 5, 8)
assert.True(t, ColumnWinner(board, FIRST_PLAYER))
}
func TestItDoesNotHaveWinnerWhenNoCombinationsFoundForColumn(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, FIRST_PLAYER, 3, 1, 8)
assert.False(t, ColumnWinner(board, FIRST_PLAYER))
}
func TestGetsTheCenterMove(t *testing.T) {
board := board.NewBoard(rules.THREE_BY_THREE)
impossiblePlayer := ImpossiblePlayer{Mark: rules.SECOND_PLAYER}
testhelper.AddMarkToPositions(board, rules.FIRST_PLAYER, 0)
assert.Equal(t, 4, impossiblePlayer.GetMove(board, rules.SECOND_PLAYER, rules.FIRST_PLAYER))
}
func TestScoreWhenOpponentWins(t *testing.T) {
board := board.NewBoard(rules.THREE_BY_THREE)
testhelper.AddMarkToPositions(board, rules.SECOND_PLAYER, 0, 1, 2)
assert.Equal(t, -10, Score(board, rules.FIRST_PLAYER, rules.SECOND_PLAYER))
}
func TestReturnsMovesRemainingOnBoard(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
board.PlaceMove(4, FIRST_PLAYER)
assert.Equal(t, []int{0, 1, 2, 3, 5, 6, 7, 8}, MovesAvailable(board))
}
func TestGetsTieIfNoWinner(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, FIRST_PLAYER, 0, 1, 5, 6, 8)
testhelper.AddMarkToPositions(board, SECOND_PLAYER, 2, 3, 4, 7)
assert.Equal(t, "Tie", GetResult(board))
}
func TestGetsWinnerMarkSecondPlayer(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, SECOND_PLAYER, 0, 1, 2)
assert.Equal(t, SECOND_PLAYER, GetResult(board))
}
func TestGetsWinnerMark(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, FIRST_PLAYER, 0, 1, 2)
assert.Equal(t, FIRST_PLAYER, GetResult(board))
}
func TestGameIsOverWhenSecondPlayerWins(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, SECOND_PLAYER, 0, 1, 2)
assert.True(t, IsGameOver(board))
}
func TestGameIsOverWhenBoardIsFull(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, FIRST_PLAYER, 0, 1, 2, 3, 4, 5, 6, 7, 8)
assert.True(t, IsGameOver(board))
}
func TestAllMovesAvailableWhenBoardIsEmpty(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
assert.Equal(t, []int{0, 1, 2, 3, 4, 5, 6, 7, 8}, MovesAvailable(board))
}
func TestItReturnsTrueWhenThereIsAWinningCombinationDiagonallyForMark(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, FIRST_PLAYER, 0, 4, 8)
assert.True(t, IsWinner(board, FIRST_PLAYER))
}
func TestScoreWhenNeitherPlayerWins(t *testing.T) {
board := board.NewBoard(rules.THREE_BY_THREE)
assert.Equal(t, 0, Score(board, rules.FIRST_PLAYER, rules.SECOND_PLAYER))
}
func TestItHasAWinnerIfSameMarkInSecondRow(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, FIRST_PLAYER, 3, 4, 5)
assert.True(t, RowWinner(board, FIRST_PLAYER))
}
func TestGetsTheFirstMove(t *testing.T) {
board := board.NewBoard(rules.THREE_BY_THREE)
impossiblePlayer := ImpossiblePlayer{Mark: rules.SECOND_PLAYER}
assert.Equal(t, 0, impossiblePlayer.GetMove(board, rules.FIRST_PLAYER, rules.SECOND_PLAYER))
}
func TestItHasNoWinnerIfOnlyOneMoveWasMade(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
testhelper.AddMarkToPositions(board, FIRST_PLAYER, 1)
assert.False(t, ColumnWinner(board, FIRST_PLAYER))
assert.False(t, RowWinner(board, FIRST_PLAYER))
}
func TestNoColumnWinnerOnEmptyBoard(t *testing.T) {
board := board.NewBoard(THREE_BY_THREE)
assert.False(t, ColumnWinner(board, FIRST_PLAYER))
}
func TestAlwaysReturnsZero(t *testing.T) {
board := board.NewBoard(rules.THREE_BY_THREE)
player := NewHumanPlayer(rules.FIRST_PLAYER)
assert.Equal(t, 0, player.GetMove(board, rules.FIRST_PLAYER, rules.SECOND_PLAYER))
}