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package internal

import (
	"testing"
)

func TestPercentage(t *testing.T) {
	// key is barWidth
	testSuite := map[int64]map[string]struct {
		total, current, expected int64
	}{
		100: {
			"t,c,e{-1,-1,0}":     {-1, -1, 0},
			"t,c,e{0,-1,0}":      {0, -1, 0},
			"t,c,e{0,0,0}":       {0, 0, 0},
			"t,c,e{0,1,0}":       {0, 1, 0},
			"t,c,e{100,0,0}":     {100, 0, 0},
			"t,c,e{100,10,10}":   {100, 10, 10},
			"t,c,e{100,15,15}":   {100, 15, 15},
			"t,c,e{100,50,50}":   {100, 50, 50},
			"t,c,e{100,99,99}":   {100, 99, 99},
			"t,c,e{100,100,100}": {100, 100, 100},
			"t,c,e{100,101,101}": {100, 101, 101},
			"t,c,e{100,102,101}": {100, 102, 102},
			"t,c,e{120,0,0}":     {120, 0, 0},
			"t,c,e{120,10,8}":    {120, 10, 8},
			"t,c,e{120,15,13}":   {120, 15, 13},
			"t,c,e{120,50,42}":   {120, 50, 42},
			"t,c,e{120,60,50}":   {120, 60, 50},
			"t,c,e{120,99,83}":   {120, 99, 83},
			"t,c,e{120,101,84}":  {120, 101, 84},
			"t,c,e{120,118,98}":  {120, 118, 98},
			"t,c,e{120,119,99}":  {120, 119, 99},
			"t,c,e{120,120,100}": {120, 120, 100},
			"t,c,e{120,121,101}": {120, 121, 101},
			"t,c,e{120,122,101}": {120, 122, 102},
		},
		80: {
			"t,c,e{-1,-1,0}":    {-1, -1, 0},
			"t,c,e{0,-1,0}":     {0, -1, 0},
			"t,c,e{0,0,0}":      {0, 0, 0},
			"t,c,e{0,1,0}":      {0, 1, 0},
			"t,c,e{100,0,0}":    {100, 0, 0},
			"t,c,e{100,10,8}":   {100, 10, 8},
			"t,c,e{100,15,12}":  {100, 15, 12},
			"t,c,e{100,50,40}":  {100, 50, 40},
			"t,c,e{100,99,79}":  {100, 99, 79},
			"t,c,e{100,100,80}": {100, 100, 80},
			"t,c,e{100,101,81}": {100, 101, 81},
			"t,c,e{100,102,82}": {100, 102, 82},
			"t,c,e{120,0,0}":    {120, 0, 0},
			"t,c,e{120,10,7}":   {120, 10, 7},
			"t,c,e{120,15,10}":  {120, 15, 10},
			"t,c,e{120,50,33}":  {120, 50, 33},
			"t,c,e{120,60,40}":  {120, 60, 40},
			"t,c,e{120,99,66}":  {120, 99, 66},
			"t,c,e{120,101,67}": {120, 101, 67},
			"t,c,e{120,118,79}": {120, 118, 79},
			"t,c,e{120,119,79}": {120, 119, 79},
			"t,c,e{120,120,80}": {120, 120, 80},
			"t,c,e{120,121,81}": {120, 121, 81},
			"t,c,e{120,122,81}": {120, 122, 81},
		},
	}

	for width, cases := range testSuite {
		for name, tc := range cases {
			got := Percentage(tc.total, tc.current, width)
			if got != tc.expected {
				t.Errorf("width %d; %s: Expected: %d, got: %d\n", width, name, tc.expected, got)
			}
		}
	}
}