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package com.gildedrose;
import static org.junit.Assert.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Random;
import org.junit.Test;
public class GildedRoseTest {
public static final int SEMENTE_FIXA = 1;
public static final int NUMERO_DE_ITENS = 5000;
public static final Path ARQUIVO_MASTER = Paths.get("master.txt");
public static final Path ARQUIVO_TESTE_ATUAL = Paths.get("test-run.txt");
public static final int MAX_SELLIN = 10;
public static final int MIN_SELLIN = -10;
public static final int MAX_QUALITY = 50;
public static final int MIN_QUALITY = 0;
public static final String[] NOME_DOS_ITENS = { "Item Qualquer", "Aged Brie",
"Backstage passes to a TAFKAL80ETC concert", "Sulfuras, Hand of Ragnaros" };
private Random random = new Random(SEMENTE_FIXA);
public static void main(String[] args) throws IOException {
GildedRoseTest gr = new GildedRoseTest();
gr.gerarAmostragemDeTeste(ARQUIVO_MASTER, NUMERO_DE_ITENS);
public void comparaTesteAtualComMaster() throws IOException {
String arquivoDoTesteAtual = lerArquivo(ARQUIVO_TESTE_ATUAL);
String arquivoDoMaster = lerArquivo(ARQUIVO_MASTER);
assertEquals(arquivoDoTesteAtual, arquivoDoMaster);
private void gerarAmostragemDeTeste(Path caminhoDoArquivo, int numeroDeItens) throws IOException {
Item[] itensAleatorios = gerarItensAleatorio(numeroDeItens);
GildedRose gildedRoseApp = new GildedRose(itensAleatorios);
try (BufferedWriter arquivoParaEscrever = Files.newBufferedWriter(caminhoDoArquivo)) {
for (Item item : itensAleatorios) {
arquivoParaEscrever.write(item.toString() + "\n");
private String lerArquivo(Path caminhoDoArquivo) throws UnsupportedEncodingException, IOException {
return new String(Files.readAllBytes(caminhoDoArquivo), "UTF-8");
private Item[] gerarItensAleatorio(int numeroDeItens) {
Item[] items = new Item[numeroDeItens];
for (int i = 0; i < numeroDeItens; i++) {
items[i] = getItemAleatorio();
return items;
private Item getItemAleatorio() {
return new Item(getNameAleatorio(), getSellInAleatorio(), getQualityAleatorio());
private String getNameAleatorio() {
return NOME_DOS_ITENS[random.nextInt(NOME_DOS_ITENS.length)];
private int getSellInAleatorio() {
return gerarNumeroAleatorioEntre(MIN_SELLIN, MAX_SELLIN);
private int getQualityAleatorio() {
return gerarNumeroAleatorioEntre(MIN_QUALITY, MAX_QUALITY);
private int gerarNumeroAleatorioEntre(int minimo, int maximo) {
return random.nextInt(maximo - minimo) + minimo;
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