package usecase

import (
	"testing"
)

// 單元測試
func TestEncodeToBase(t *testing.T) {
	tests := []struct {
		num    int64
		base   int
		length int
		want   string
	}{
		// 測試基礎情況
		{num: 0, base: 10, length: 6, want: "OOOOOO"},
		{num: 1, base: 10, length: 6, want: "OOOOOD"},

		{num: 24, base: 10, length: 6, want: "OOOOWY"},
		{num: 25, base: 10, length: 6, want: "OOOOWG"},
		{num: 1, base: 10, length: 4, want: "OOOD"},
		{num: 24, base: 10, length: 4, want: "OOWY"},
		{num: 25, base: 10, length: 5, want: "OOOWG"},
		{num: 1234567890, base: 10, length: 10, want: "DWXYGBCHEO"}, // 測試大數情況
	}

	for _, tt := range tests {
		t.Run("encodeToBase", func(t *testing.T) {
			got := encodeToBase(tt.num, tt.base, tt.length)
			if got != tt.want {
				t.Errorf("encodeToBase(%d, %d, %d) = %s; want %s", tt.num, tt.base, tt.length, got, tt.want)
			}
		})
	}
}