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/*
* SonarQube
* Copyright (C) 2009-2018 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.home.cache;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.rules.TemporaryFolder;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigInteger;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.security.SecureRandom;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public class FileHashesTest {
SecureRandom secureRandom = new SecureRandom();
@Rule
public ExpectedException thrown = ExpectedException.none();
@Rule
public TemporaryFolder temp = new TemporaryFolder();
@Test
public void test_md5_hash() {
assertThat(hash("sonar")).isEqualTo("d85e336d61f5344395c42126fac239bc");
// compare results with commons-codec
for (int index = 0; index < 100; index++) {
String random = randomString();
assertThat(hash(random)).as(random).isEqualTo(
DigestUtils.md5Hex(random).toLowerCase()
);
}
}
@Test
public void test_hash_file() throws IOException {
File f = temp.newFile();
Files.write(f.toPath(), "sonar".getBytes(StandardCharsets.UTF_8));
assertThat(hashFile(f)).isEqualTo("d85e336d61f5344395c42126fac239bc");
}
@Test
public void test_toHex() {
// lower-case
assertThat(FileHashes.toHex("aloa_bi_bop_a_loula".getBytes())).isEqualTo("616c6f615f62695f626f705f615f6c6f756c61");
// compare results with commons-codec
for (int index = 0; index < 100; index++) {
String random = randomString();
assertThat(FileHashes.toHex(random.getBytes())).as(random).isEqualTo(
Hex.encodeHexString(random.getBytes()).toLowerCase()
);
}
}
@Test
public void fail_if_file_does_not_exist() throws IOException {
File file = temp.newFile("does_not_exist");
FileUtils.forceDelete(file);
thrown.expect(IllegalStateException.class);
thrown.expectMessage("Fail to compute hash of: " + file.getAbsolutePath());
new FileHashes().of(file);
}
@Test
public void fail_if_stream_is_closed() throws Exception {
thrown.expect(IllegalStateException.class);
thrown.expectMessage("Fail to compute hash");
InputStream input = mock(InputStream.class);
when(input.read(any(byte[].class), anyInt(), anyInt())).thenThrow(new IllegalThreadStateException());
new FileHashes().of(input);
}
private String randomString() {
return new BigInteger(130, secureRandom).toString(32);
}
private String hash(String s) {
InputStream in = new ByteArrayInputStream(s.getBytes());
try {
return new FileHashes().of(in);
} finally {
IOUtils.closeQuietly(in);
}
}
private String hashFile(File f) {
return new FileHashes().of(f);
}
}
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