#if swift(>=3.0)
    import XCTest
#endif

class PokerTest: XCTestCase {

    var validTestCases:[(name: String, hands: [String], best: String)] = []
    var invalidTestCases:[(name: String, hand: String)] = []

    func testInvalidCases() {
        for each in invalidTestCases {
            XCTAssertNil(PokerHand(each.hand), "\(each.name)")
        }
    }

    func testAllValid() {
        for each in validTestCases {
            XCTAssertEqual(Poker.bestHand(each.hands), each.best, "\(each.name)")
        }
    }

    override func setUp() {
        super.setUp()

        validTestCases = [
            (
                name:  "single hand is always best",
                hands: ["3♡ 10♢ 7♧ 8♤ A♢"],
                best:  "3♡ 10♢ 7♧ 8♤ A♢"
            ),
            (
                name:  "highest card",
                hands: ["3♢ 2♢ 5♤ 6♤ 9♡", "3♡ 2♡ 5♧ 6♢ 10♡"],
                best:  "3♡ 2♡ 5♧ 6♢ 10♡"
            ),
            (
                name:  "One pair",
                hands: ["3♢ 2♢ 5♤ 6♤ 9♡", "3♡ 3♤ 5♧ 6♢ 9♢"],
                best:  "3♡ 3♤ 5♧ 6♢ 9♢"
            ),
            (
                name:  "pair beats lower",
                hands: ["4♢ 3♤ 4♤ J♤ K♤", "A♡ K♡ J♢ 10♧ 9♡"],
                best:  "4♢ 3♤ 4♤ J♤ K♤"
            ),
            (
                name:  "best pair",
                hands: ["4♡ 2♡ 5♧ 4♢ 10♡", "3♢ 3♡ 5♤ 6♤ 9♡"],
                best:  "4♡ 2♡ 5♧ 4♢ 10♡"
            ),
            (
                name:  "best pair with same pair and highest cards",
                hands: ["4♡ 2♡ 5♧ 4♢ 10♡", "4♤ 4♧ 5♡ 10♢ 3♡"],
                best:  "4♤ 4♧ 5♡ 10♢ 3♡"
            ),
            (
                name: "two pair beats lower",
                hands: [
                    "4♢ 3♤ 4♤ J♤ K♤",
                    "A♡ K♡ J♢ 10♧ 9♡",
                    "2♢ 8♡ 5♢ 2♡ 8♧"
                ],
                best:  "2♢ 8♡ 5♢ 2♡ 8♧"
            ),
            (
                name: "best two pair",
                hands: [
                    "4♢ J♧ 4♤ J♤ K♤",
                    "A♡ K♡ J♢ 10♧ 9♡",
                    "2♢ 8♡ 5♢ 2♡ 8♧"
                ],
                best:  "4♢ J♧ 4♤ J♤ K♤"
            ),
            (
                name: "best two pair with equal highest pair",
                hands: [
                    "4♢ J♧ 4♤ J♤ K♤",
                    "A♡ K♡ J♢ 10♧ 9♡",
                    "3♢ J♡ 5♢ 3♡ J♢"
                ],
                best:  "4♢ J♧ 4♤ J♤ K♤"
            ),
            (
                name: "best two pair with equal pairs",
                hands: [
                    "4♢ J♧ 4♤ J♤ 2♤",
                    "A♡ K♡ J♢ 10♧ 9♡",
                    "4♧ J♡ 5♢ 4♡ J♢"
                ],
                best:  "4♧ J♡ 5♢ 4♡ J♢"
            ),
            (
                name: "full house",
                hands: [
                    "4♢ 3♤ 4♤ J♤ K♤",
                    "A♡ K♡ J♢ 10♧ 9♡",
                    "3♡ 8♡ 3♢ 3♧ 8♧",
                    "2♢ 8♡ 5♢ 2♡ 8♧"
                ],
                best:  "3♡ 8♡ 3♢ 3♧ 8♧"
            ),
            (
                name: "best three of a kind",
                hands: [
                    "4♢ 3♤ 4♤ J♤ 4♡",
                    "A♡ K♡ J♢ 10♧ 9♡",
                    "3♢ 8♡ 3♡ 3♧ 9♧",
                    "2♢ 8♡ 5♢ 2♡ 8♧"
                ],
                best:  "4♢ 3♤ 4♤ J♤ 4♡"
            ),
            (
                name: "straight beats lower",
                hands: [
                    "4♢ 3♤ 4♤ J♤ K♤",
                    "Q♡ K♡ J♢ 10♧ 9♡",
                    "3♡ 8♡ 3♢ 3♧ 9♧",
                    "2♢ 8♡ 5♢ 2♡ 8♧"
                ],
                best:  "Q♡ K♡ J♢ 10♧ 9♡"
            ),
            (
                name: "straight includes ace as one",
                hands: [
                    "4♢ 3♤ 4♤ J♤ K♤",
                    "2♤ 3♡ A♤ 5♤ 4♤",
                    "3♢ 8♡ 3♡ 3♧ 9♧",
                    "2♢ 8♡ 5♢ 2♡ 8♧"
                ],
                best:  "2♤ 3♡ A♤ 5♤ 4♤"
            ),
            (
                name: "best straight",
                hands: [
                    "4♢ 3♤ 4♤ J♤ K♤",
                    "Q♡ K♡ J♢ 10♧ 9♡",
                    "A♢ K♧ 10♢ J♢ Q♢",
                    "2♢ 8♡ 5♢ 2♡ 8♧"
                ],
                best:  "A♢ K♧ 10♢ J♢ Q♢"
            ),
            (
                name: "flush beats lower",
                hands: [
                    "4♤ 3♤ 8♤ J♤ K♤",
                    "Q♡ K♡ J♢ 10♧ 9♡",
                    "3♢ 8♡ 3♢ 3♧ 9♧",
                    "2♢ 8♡ 5♢ 2♡ 8♧"
                ],
                best:  "4♤ 3♤ 8♤ J♤ K♤"
            ),
            (
                name: "best flush",
                hands: [
                    "4♤ 3♤ 8♤ J♤ K♤",
                    "Q♡ K♡ J♢ 10♧ 9♡",
                    "3♢ 8♢ A♢ 2♢ 7♢",
                    "2♢ 8♡ 5♢ 2♡ 8♧"
                ],
                best:  "3♢ 8♢ A♢ 2♢ 7♢"
            ),
            (
                name: "full house beats lower",
                hands: [
                    "4♤ 3♤ 8♤ J♤ K♤",
                    "2♢ 8♡ 8♢ 2♡ 8♧",
                    "Q♡ K♡ J♢ 10♧ 9♡",
                    "3♡ A♡ 3♢ 3♧ A♧"
                ],
                best:  "2♢ 8♡ 8♢ 2♡ 8♧"
            ),
            (
                name: "best full house",
                hands: [
                    "4♤ 3♤ 8♤ J♤ K♤",
                    "2♢ 8♡ 8♢ 2♡ 8♧",
                    "5♡ 5♢ A♤ 5♧ A♢",
                    "3♡ A♡ 3♢ 3♧ A♧"
                ],
                best:  "2♢ 8♡ 8♢ 2♡ 8♧"
            ),
            (
                name: "four of a kind beats lower",
                hands: [
                    "4♤ 5♤ 8♤ J♤ K♤",
                    "2♢ 8♡ 8♢ 2♡ 8♧",
                    "Q♡ K♡ J♢ 10♧ 9♡",
                    "3♢ 3♡ 3♤ 3♧ A♧"
                ],
                best:  "3♢ 3♡ 3♤ 3♧ A♧"
            ),
            (
                name: "best four of a kind",
                hands: [
                    "4♤ 5♤ 8♤ J♤ K♤",
                    "2♢ 2♧ 8♢ 2♡ 2♤",
                    "Q♡ K♡ J♢ 10♧ 9♡",
                    "3♢ 3♡ 3♤ 3♧ A♧"
                ],
                best:  "3♢ 3♡ 3♤ 3♧ A♧"
            ),
            (
                name: "straight flush beats lower",
                hands: [
                    "4♤ 4♢ 4♡ 4♧ K♤",
                    "2♢ 8♡ 8♢ 2♡ 8♧",
                    "Q♡ K♡ 8♡ 10♡ 9♡",
                    "2♤ 3♤ A♤ 5♤ 4♤"
                ],
                best:  "2♤ 3♤ A♤ 5♤ 4♤"
            ),
            (
                name: "best straight flush is royal flush",
                hands: [
                    "4♤ 5♤ 8♤ J♤ K♤",
                    "2♢ 8♡ 8♢ 2♡ 8♧",
                    "Q♡ K♡ J♡ 10♡ 9♡",
                    "Q♢ K♢ J♢ 10♢ A♢"
                ],
                best:  "Q♢ K♢ J♢ 10♢ A♢"
            ),
            (
                name:  "tie for best pair: brake tide by suit",
                hands: ["4♡ 2♡ 5♧ 4♢ 10♡", "4♧ 10♢ 5♤ 2♤ 4♤"],
                best:  "4♡ 2♡ 5♧ 4♢ 10♡"
            ),
            (
                name: "tie of three: brake tide by suit",
                hands: [
                    "A♡ 2♡ 3♡ 4♡ 5♡",
                    "A♤ 2♤ 3♤ 4♤ 5♤",
                    "5♧ 4♧ 3♧ 2♧ A♧",
                    "A♢ 2♢ 6♢ 4♢ 5♢"
                ],
                best:  "A♤ 2♤ 3♤ 4♤ 5♤"
            )
        ]

        invalidTestCases  =
            [
                (
                    name: "1 is an invalid card rank",
                    hand: "1♢ 2♡ 3♡ 4♡ 5♡"
                ),
                (
                    name: "15 is an invalid card rank",
                    hand: "15♢ 2♡ 3♡ 4♡ 5♡"
                ),
                (
                    name: "too few cards",
                    hand: "2♡ 3♡ 4♡ 5♡"
                ),
                (
                    name: "too many cards",
                    hand: "2♡ 3♡ 4♡ 5♡ 6♡ 7♡"
                ),
                (
                    name: "lack of rank",
                    hand: "11♢ 2♡ ♡ 4♡ 5♡"
                ),
                (
                    name: "lack of suit",
                    hand: "2♡ 3♡ 4 5♡ 7♡"
                ),
                (
                    name: "H is an invalid suit",
                    hand: "2♡ 3♡ 4H 5♡ 7♡"
                ),
                (
                    name: "♥ is an invalid suit",
                    hand: "2♡ 3♡ 4♥ 5♡ 7♡"
                ),
                (
                    name: "lack of spacing",
                    hand: "2♡ 3♡ 5♡7♡ 8♡"
                ),
                (
                    name: "double suits after rank",
                    hand: "2♡ 3♡ 5♡♡ 8♡ 9♡"
                )
        ]

    }
}