package main

import (
	"testing"
)

func TestDistanceOnTwoIds(t *testing.T) {
	cases := []struct {
		Name        string
		Left, Right []int
		Expected    int
	}{
		{"d(3, 4) = 1", []int{3}, []int{4}, 1},
		{"d(4, 3) = 1", []int{4}, []int{3}, 1},
		{"d(2, 5) = 3", []int{2}, []int{5}, 3},
		{"d(1, 3) = 2", []int{1}, []int{3}, 2},
		{"d(3, 9) = 6", []int{3}, []int{9}, 6},
		{"d(3, 3) = 0", []int{3}, []int{3}, 0},
		{"d([3,4,2,1,3,3], [4,3,5,3,9,3]) = 11",
			[]int{3, 4, 2, 1, 3, 3},
			[]int{4, 3, 5, 3, 9, 3},
			11,
		},
	}
	for _, c := range cases {
		actual := distance(c.Left, c.Right)
		if actual != c.Expected {
			t.Errorf("Expected %s; got %d", c.Name, actual)
		}
	}
}