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// Copyright 2014 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.unix;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.fail;
import com.google.common.collect.ImmutableMap;
import com.google.common.hash.HashCode;
import com.google.devtools.build.lib.testutil.TestUtils;
import com.google.devtools.build.lib.vfs.FileSystem;
import com.google.devtools.build.lib.vfs.FileSystemUtils;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.vfs.UnixFileSystem;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.io.File;
import java.io.FileNotFoundException;
/**
* This class tests the FilesystemUtils class.
*/
@RunWith(JUnit4.class)
public class FilesystemUtilsTest {
private FileSystem testFS;
private Path workingDir;
private Path testFile;
@Before
public void setUp() throws Exception {
testFS = new UnixFileSystem();
workingDir = testFS.getPath(new File(TestUtils.tmpDir()).getCanonicalPath());
testFile = workingDir.getRelative("test");
}
/**
* This test validates that the md5sum() method returns hashes that match the official test
* vectors specified in RFC 1321, The MD5 Message-Digest Algorithm.
*
* @throws Exception
*/
@Test
public void testValidateMd5Sum() throws Exception {
ImmutableMap<String, String> testVectors = ImmutableMap.<String, String>builder()
.put("", "d41d8cd98f00b204e9800998ecf8427e")
.put("a", "0cc175b9c0f1b6a831c399e269772661")
.put("abc", "900150983cd24fb0d6963f7d28e17f72")
.put("message digest", "f96b697d7cb7938d525a2f31aaf161d0")
.put("abcdefghijklmnopqrstuvwxyz", "c3fcd3d76192e4007dfb496cca67e13b")
.put("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
"d174ab98d277d9f5a5611c2c9f419d9f")
.put(
"12345678901234567890123456789012345678901234567890123456789012345678901234567890",
"57edf4a22be3c955ac49da2e2107b67a")
.build();
for (String testInput : testVectors.keySet()) {
FileSystemUtils.writeContentAsLatin1(testFile, testInput);
HashCode result = FilesystemUtils.md5sum(testFile.getPathString());
assertThat(testVectors).containsEntry(testInput, result.toString());
}
}
@Test
public void throwsFileAccessException() throws Exception {
FileSystemUtils.createEmptyFile(testFile);
FilesystemUtils.chmod(testFile.getPathString(), 0200);
try {
FilesystemUtils.md5sum(testFile.getPathString());
fail("Expected FileAccessException, but wasn't thrown.");
} catch (FileAccessException e) {
assertThat(e).hasMessage(testFile + " (Permission denied)");
}
}
@Test
public void throwsFileNotFoundException() throws Exception {
try {
FilesystemUtils.md5sum(testFile.getPathString());
fail("Expected FileNotFoundException, but wasn't thrown.");
} catch (FileNotFoundException e) {
assertThat(e).hasMessage(testFile + " (No such file or directory)");
}
}
@Test
public void throwsFilePermissionException() throws Exception {
File foo = new File("/bin");
try {
FilesystemUtils.setWritable(foo);
fail("Expected FilePermissionException, but wasn't thrown.");
} catch (FilePermissionException e) {
assertThat(e).hasMessage(foo + " (Operation not permitted)");
}
}
}
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