examples/bowling_game_test.go

/*

Reference: http://butunclebob.com/ArticleS.UncleBob.TheBowlingGameKata

See the very first link (which happens to be the very first word of
the first paragraph) on the page for a tutorial.

*/

package examples

import (
	"testing"

	. "github.com/smartystreets/goconvey/convey"
)

func TestBowlingGameScoring(t *testing.T) {
	Convey("Given a fresh score card", t, func() {
		game := NewGame()

		Convey("When all gutter balls are thrown", func() {
			game.rollMany(20, 0)

			Convey("The score should be zero", func() {
				So(game.Score(), ShouldEqual, 0)
			})
		})

		Convey("When all throws knock down only one pin", func() {
			game.rollMany(20, 1)

			Convey("The score should be 20", func() {
				So(game.Score(), ShouldEqual, 20)
			})
		})

		Convey("When a spare is thrown", func() {
			game.rollSpare()
			game.Roll(3)
			game.rollMany(17, 0)

			Convey("The score should include a spare bonus.", func() {
				So(game.Score(), ShouldEqual, 16)
			})
		})

		Convey("When a strike is thrown", func() {
			game.rollStrike()
			game.Roll(3)
			game.Roll(4)
			game.rollMany(16, 0)

			Convey("The score should include a strike bonus.", func() {
				So(game.Score(), ShouldEqual, 24)
			})
		})

		Convey("When all strikes are thrown", func() {
			game.rollMany(21, 10)

			Convey("The score should be 300.", func() {
				So(game.Score(), ShouldEqual, 300)
			})
		})
	})
}

func (self *Game) rollMany(times, pins int) {
	for x := 0; x < times; x++ {
		self.Roll(pins)
	}
}
func (self *Game) rollSpare() {
	self.Roll(5)
	self.Roll(5)
}
func (self *Game) rollStrike() {
	self.Roll(10)
}