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/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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 android.os;
import android.content.Context;
import android.os.FileUtils;
import android.os.FileUtils.FileStatus;
import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.LargeTest;
import android.test.suitebuilder.annotation.MediumTest;
import android.test.suitebuilder.annotation.SmallTest;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileWriter;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import junit.framework.Assert;
public class FileUtilsTest extends AndroidTestCase {
private static final String TEST_DATA =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
private File mTestFile;
private File mCopyFile;
@Override
protected void setUp() throws Exception {
super.setUp();
File testDir = getContext().getDir("testing", Context.MODE_PRIVATE);
mTestFile = new File(testDir, "test.file");
mCopyFile = new File(testDir, "copy.file");
FileWriter writer = new FileWriter(mTestFile);
try {
writer.write(TEST_DATA, 0, TEST_DATA.length());
} finally {
writer.close();
}
}
@Override
protected void tearDown() throws Exception {
if (mTestFile.exists()) mTestFile.delete();
if (mCopyFile.exists()) mCopyFile.delete();
}
@LargeTest
public void testGetFileStatus() {
final byte[] MAGIC = { 0xB, 0xE, 0x0, 0x5 };
try {
// truncate test file and write MAGIC (4 bytes) to it.
FileOutputStream os = new FileOutputStream(mTestFile, false);
os.write(MAGIC, 0, 4);
os.flush();
os.close();
} catch (FileNotFoundException e) {
Assert.fail("File was removed durning test" + e);
} catch (IOException e) {
Assert.fail("Unexpected IOException: " + e);
}
Assert.assertTrue(mTestFile.exists());
Assert.assertTrue(FileUtils.getFileStatus(mTestFile.getPath(), null));
FileStatus status1 = new FileStatus();
FileUtils.getFileStatus(mTestFile.getPath(), status1);
Assert.assertEquals(4, status1.size);
// Sleep for at least one second so that the modification time will be different.
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
try {
// append so we don't change the creation time.
FileOutputStream os = new FileOutputStream(mTestFile, true);
os.write(MAGIC, 0, 4);
os.flush();
os.close();
} catch (FileNotFoundException e) {
Assert.fail("File was removed durning test" + e);
} catch (IOException e) {
Assert.fail("Unexpected IOException: " + e);
}
FileStatus status2 = new FileStatus();
FileUtils.getFileStatus(mTestFile.getPath(), status2);
Assert.assertEquals(8, status2.size);
Assert.assertTrue(status2.mtime > status1.mtime);
mTestFile.delete();
Assert.assertFalse(mTestFile.exists());
Assert.assertFalse(FileUtils.getFileStatus(mTestFile.getPath(), null));
}
// TODO: test setPermissions(), getPermissions()
@MediumTest
public void testCopyFile() throws Exception {
assertFalse(mCopyFile.exists());
FileUtils.copyFile(mTestFile, mCopyFile);
assertTrue(mCopyFile.exists());
assertEquals(TEST_DATA, FileUtils.readTextFile(mCopyFile, 0, null));
}
@MediumTest
public void testCopyToFile() throws Exception {
final String s = "Foo Bar";
assertFalse(mCopyFile.exists());
FileUtils.copyToFile(new ByteArrayInputStream(s.getBytes()), mCopyFile); assertTrue(mCopyFile.exists());
assertEquals(s, FileUtils.readTextFile(mCopyFile, 0, null));
}
@MediumTest
public void testIsFilenameSafe() throws Exception {
assertTrue(FileUtils.isFilenameSafe(new File("foobar")));
assertTrue(FileUtils.isFilenameSafe(new File("a_b-c=d.e/0,1+23")));
assertFalse(FileUtils.isFilenameSafe(new File("foo*bar")));
assertFalse(FileUtils.isFilenameSafe(new File("foo\nbar")));
}
@MediumTest
public void testReadTextFile() throws Exception {
assertEquals(TEST_DATA, FileUtils.readTextFile(mTestFile, 0, null));
assertEquals("ABCDE", FileUtils.readTextFile(mTestFile, 5, null));
assertEquals("ABCDE<>", FileUtils.readTextFile(mTestFile, 5, "<>"));
assertEquals(TEST_DATA.substring(0, 51) + "<>",
FileUtils.readTextFile(mTestFile, 51, "<>"));
assertEquals(TEST_DATA, FileUtils.readTextFile(mTestFile, 52, "<>"));
assertEquals(TEST_DATA, FileUtils.readTextFile(mTestFile, 100, "<>"));
assertEquals("vwxyz", FileUtils.readTextFile(mTestFile, -5, null));
assertEquals("<>vwxyz", FileUtils.readTextFile(mTestFile, -5, "<>"));
assertEquals("<>" + TEST_DATA.substring(1, 52),
FileUtils.readTextFile(mTestFile, -51, "<>"));
assertEquals(TEST_DATA, FileUtils.readTextFile(mTestFile, -52, "<>"));
assertEquals(TEST_DATA, FileUtils.readTextFile(mTestFile, -100, "<>"));
}
@MediumTest
public void testReadTextFileWithZeroLengthFile() throws Exception {
new FileOutputStream(mTestFile).close(); // Zero out the file
assertEquals("", FileUtils.readTextFile(mTestFile, 0, null));
assertEquals("", FileUtils.readTextFile(mTestFile, 1, "<>"));
assertEquals("", FileUtils.readTextFile(mTestFile, 10, "<>"));
assertEquals("", FileUtils.readTextFile(mTestFile, -1, "<>"));
assertEquals("", FileUtils.readTextFile(mTestFile, -10, "<>"));
}
}
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