HashMakerTest.java

/* The MIT License (MIT)
 * Copyright (c) 2014 Nicholas Wright
 * http://opensource.org/licenses/MIT
 */

package com.github.dozedoff.commonj.hash;

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertThat;

import java.io.File;
import java.net.URISyntaxException;
import java.nio.file.Paths;

import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

@SuppressWarnings("deprecation")
public class HashMakerTest {
	byte[] testData = { 12, 45, 6, 12, 99 }; // SHA-256: 95F6A79D2199FC2CFA8F73C315AA16B33BF3544C407B4F9B29889333CA0DB815
	byte[] testData2 = { 99, 21, 6, 45, 12 }; // SHA-256: 20FC038E00E13585E68E7EBE50D79CBE7D476A74D8FDE71872627DA6CD8FC8BB
	byte[] testData3 = {}; // SHA-256: E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855

	private static File testFile, testFile2, testFile3;

	HashMaker hm;

	@BeforeClass
	public static void classSetup() throws URISyntaxException {
		ClassLoader cl = Thread.currentThread().getContextClassLoader();
		testFile = Paths.get(cl.getResource("test1").toURI()).toFile();
		testFile2 = Paths.get(cl.getResource("test2").toURI()).toFile();
		testFile3 = Paths.get(cl.getResource("test3").toURI()).toFile();
	}

	@Before
	public void setUp() throws Exception {
		hm = new HashMaker();
	}

	@Test
	public void testHash1() {
		assertThat(hm.hash(testData), is("95F6A79D2199FC2CFA8F73C315AA16B33BF3544C407B4F9B29889333CA0DB815"));
	}

	@Test
	public void testHash2() {
		assertThat(hm.hash(testData2), is("20FC038E00E13585E68E7EBE50D79CBE7D476A74D8FDE71872627DA6CD8FC8BB"));
	}

	@Test
	public void testNoData() {
		assertThat(hm.hash(testData3), is("E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855"));
	}

	@Test
	public void testNullData() {
		assertNull(hm.hash(null));
	}

	@Test
	public void testHashFile1() throws Exception {
		System.out.println();
		assertThat(hm.hashFile(testFile), is("95F6A79D2199FC2CFA8F73C315AA16B33BF3544C407B4F9B29889333CA0DB815"));
	}

	@Test
	public void testHashFile2() throws Exception {
		assertThat(hm.hashFile(testFile2), is("20FC038E00E13585E68E7EBE50D79CBE7D476A74D8FDE71872627DA6CD8FC8BB"));
	}

	@Test
	public void testHashFile3() throws Exception {
		assertThat(hm.hashFile(testFile3), is("E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855"));
	}

	@Test
	public void testNoDataFile() {
		assertNull(hm.hashFile((File) null));
	}

	@Test
	public void testInvalidFile() {
		assertNull(hm.hashFile(new File(".\fooBar")));
	}

	@Test
	public void testInaccessibleFile() {
		assertNull(hm.hashFile(new File(".")));
	}

	@Test
	public void testInvalidAlgorithm() {
		hm = new HashMaker("notValid");
	}
}