package main

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestParseFromString(t *testing.T) {
	tests := map[string]struct {
		input1 string
		input2 int64
	}{
		"KB": {input1: "5.5KB", input2: 5632},
		"MB": {input1: "6.7MB", input2: 7025459},
		"GB": {input1: "7.5GB", input2: 8053063680},
	}

	for name, tc := range tests {
		t.Run(name, func(t *testing.T) {
			by := ByteSize{}
			err := by.ParseFromString(tc.input1)
			assert.Equal(t, err, nil)
			assert.EqualValues(t, by.NumberRep, tc.input2)
		})
	}
}

func TestParseFromNumber(t *testing.T) {
	tests := map[string]struct {
		input1 int64
		input2 string
	}{
		"KB": {input1: 528870, input2: "516.5KB"},
		"MB": {input1: 7025459, input2: "6.7MB"},
		"GB": {input1: 8053063680, input2: "7.5GB"},
	}

	for name, tc := range tests {
		t.Run(name, func(t *testing.T) {
			by := ByteSize{}
			by.ParseFromNumber(tc.input1)
			assert.EqualValues(t, by.HumanRep, tc.input2)
		})
	}
}