Created
May 12, 2022 16:04
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Checkout_kata_12-05-2022
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package main | |
import ( | |
"testing" | |
"github.com/stretchr/testify/assert" | |
) | |
type item_discount struct { | |
name rune | |
quantity int | |
discount int | |
} | |
func GetPrices() map[rune]int { | |
var prices = make(map[rune]int) | |
prices['A'] = 50 | |
prices['B'] = 30 | |
return prices | |
} | |
func TestAlwaysTrue(t *testing.T) { | |
assert.True(t, true) | |
} | |
func TestEmptyBasketIsZero(t *testing.T) { | |
var TotalPrice = ScanWithPriceAndDiscount("") | |
assert.Equal(t, 0, TotalPrice) | |
} | |
func TestItemAisFifty(t *testing.T) { | |
var TotalPrice = ScanWithPriceAndDiscount("A") | |
assert.Equal(t, 50, TotalPrice) | |
} | |
func TestItemAAisOneHundred(t *testing.T) { | |
var TotalPrice = ScanWithPriceAndDiscount("AA") | |
assert.Equal(t, 100, TotalPrice) | |
} | |
func TestItemBisThirty(t *testing.T) { | |
var TotalPrice = ScanWithPriceAndDiscount("B") | |
assert.Equal(t, 30, TotalPrice) | |
} | |
func TestItemAAAisOneThirty(t *testing.T) { | |
var TotalPrice = ScanWithPriceAndDiscount("AAA") | |
assert.Equal(t, 130, TotalPrice) | |
} | |
func TestItemAAAAisOneEighty(t *testing.T) { | |
var TotalPrice = ScanWithPriceAndDiscount("AAAA") | |
assert.Equal(t, 180, TotalPrice) | |
} | |
func TestItemAAAAAAis260(t *testing.T) { | |
var TotalPrice = ScanWithPriceAndDiscount("AAAAAA") | |
assert.Equal(t, 260, TotalPrice) | |
} | |
func TestItemBBis45(t *testing.T) { | |
var TotalPrice = ScanWithPriceAndDiscount("BB") | |
assert.Equal(t, 45, TotalPrice) | |
} | |
func TestItemABisEighty(t *testing.T) { | |
var TotalPrice = ScanWithPriceAndDiscount("AB") | |
assert.Equal(t, 80, TotalPrice) | |
} | |
func ScanWithPriceAndDiscount(items string) int { | |
return Scan(items, GetPrices(), GetDiscounts()) | |
} | |
func Scan(items string, prices map[rune]int, discounts map[rune]item_discount) int { | |
discount := CalculateDiscount(items, discounts) | |
total := 0 | |
for _, item := range items { | |
total += prices[item] | |
} | |
return total - discount | |
} | |
func GetDiscounts() map[rune]item_discount { | |
var discounts = make(map[rune]item_discount) | |
discounts['A'] = item_discount{name: 'A', quantity: 3, discount: 20} | |
discounts['B'] = item_discount{name: 'B', quantity: 2, discount: 15} | |
return discounts | |
} | |
func CalculateDiscount(items string, discounts map[rune]item_discount) int { | |
counts := GetCounts(items) | |
discount := 0 | |
discount = (counts['A'] / discounts['A'].quantity) * discounts['A'].discount | |
discount += (counts['B'] / discounts['B'].quantity) * discounts['B'].discount | |
return discount | |
} | |
func GetCounts(items string) map[rune]int { | |
var counts = make(map[rune]int) | |
for _, item := range items { | |
counts[item]++ | |
} | |
return counts | |
} |
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