Cafe.Spockの成果物

DropAndRefundTest.groovy

import spock.lang.*

class DropAndRefundTest extends spock.lang.Specification {
    def setup(){

    }

    @Unroll
    def "自販機に #money を投入できる"() {
        setup:
        def vender = new VendingMachine()

        expect:
        vender.dropIn(money)
        notThrown(IllegalArgumentException)

        where:
        money << [Money.ten(), Money.fifty(), Money.hundred(), Money.fiveHundreds(), Money.thousand()]
    }

    @Unroll
    def "総計を取得できる"() {
        setup:
        def vender = new VendingMachine()

        expect:
        vender.dropIn(money)
        vender.totalValue() == expected

        where:
        money | expected
        Money.ten() | 10
        Money.fifty() | 50
        Money.hundred() | 100
        Money.fiveHundreds() | 500
        Money.thousand() | 1000
    }

    @Unroll
    def "複数枚のお金を投入した時に、累計を取得できる"() {
        setup:
        def vender = new VendingMachine()

        expect:
        money.each {m -> vender.dropIn(m)}
        vender.totalValue() == expected

        where:
        money | expected
        [Money.ten(), Money.hundred()] | 110
        [Money.fifty(), Money.thousand(), Money.fiveHundreds()] | 1550
    }

    @Unroll
    def "払い戻し操作を行うと、投入金額の総計を釣り銭として出力する"() {
        setup:
        def vender = new VendingMachine()

        expect:
        money.each {m -> vender.dropIn(m)}
        vender.refund() == expected
        vender.totalValue() == 0

        where:
        money | expected
        [Money.hundred()] | 100
        [Money.fifty()] | 50
        [Money.ten(), Money.fiveHundreds()] | 510
    }



    def "#money when bar #expected"(){
        setup:
        def vender = new VendingMachine()

        expect:
        vender.dropIn(money) == expected

        where:
        money | expected
        Money.fiveThousands() | 5000
    }
}

Money.groovy

class Money {
    int value

    static Money ten() {
        new Money(value: 10)
    }

    static Money fifty() {
        new Money(value: 50)
    }

    static Money hundred() {
        new Money(value: 100)
    }

    static Money fiveHundreds() {
        new Money(value: 500)
    }

    static Money thousand() {
        new Money(value: 1000)
    }

    static Money fiveThousands() {
        new Money(value: 5000)
    }
}

VendingMachine.groovy

class VendingMachine {
    int amount

    def dropIn(Money money) {
        if (money.value == 5000) {
            5000
        } else {
            amount += money.value
            0
        }
    }

    def totalValue() {
        amount
    }

    int refund() {
        int ret = amount
        amount = 0
        println ret
        ret
    }
}