package inttoroman_test

import (
	"fmt"
	"testing"

	"git.jxs.me/leetgo/inttoroman"
	"github.com/stretchr/testify/require"
)

func TestZero(t *testing.T) {
	require.Equal(t, "", inttoroman.Convert(0))
}

func TestOne(t *testing.T) {
	require.Equal(t, "I", inttoroman.Convert(1))
}

func TestTwo(t *testing.T) {
	require.Equal(t, "II", inttoroman.Convert(2))
}

func TestFour(t *testing.T) {
	require.Equal(t, "IV", inttoroman.Convert(4))
}

func TestFive(t *testing.T) {
	require.Equal(t, "V", inttoroman.Convert(5))
}

func TestSix(t *testing.T) {
	require.Equal(t, "VI", inttoroman.Convert(6))
}

func TestNine(t *testing.T) {
	require.Equal(t, "IX", inttoroman.Convert(9))
}

func TestEleven(t *testing.T) {
	require.Equal(t, "XI", inttoroman.Convert(11))
}

func TestIntToRoman(t *testing.T) {
	cases := map[string]int{
		"":        0,
		"I":       1,
		"II":      2,
		"IV":      4,
		"V":       5,
		"IX":      9,
		"X":       10,
		"XX":      20,
		"XII":     12,
		"XL":      40,
		"L":       50,
		"XC":      90,
		"C":       100,
		"LVIII":   58,
		"DCXIII":  613,
		"MCMXCIV": 1994,
	}

	for roman, decimal := range cases {
		t.Run(fmt.Sprint(decimal), func(t *testing.T) {
			require.Equal(t, roman, inttoroman.Convert(decimal))
		})
	}
}