2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 import android.content.Context;
20 import android.os.FileUtils;
21 import android.os.FileUtils.FileStatus;
22 import android.test.AndroidTestCase;
23 import android.test.suitebuilder.annotation.LargeTest;
24 import android.test.suitebuilder.annotation.MediumTest;
25 import android.test.suitebuilder.annotation.SmallTest;
27 import java.io.ByteArrayInputStream;
29 import java.io.FileWriter;
30 import java.io.FileNotFoundException;
31 import java.io.FileOutputStream;
32 import java.io.IOException;
34 import junit.framework.Assert;
36 public class FileUtilsTest extends AndroidTestCase {
37 private static final String TEST_DATA =
38 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
40 private File mTestFile;
41 private File mCopyFile;
44 protected void setUp() throws Exception {
46 File testDir = getContext().getDir("testing", Context.MODE_PRIVATE);
47 mTestFile = new File(testDir, "test.file");
48 mCopyFile = new File(testDir, "copy.file");
49 FileWriter writer = new FileWriter(mTestFile);
51 writer.write(TEST_DATA, 0, TEST_DATA.length());
58 protected void tearDown() throws Exception {
59 if (mTestFile.exists()) mTestFile.delete();
60 if (mCopyFile.exists()) mCopyFile.delete();
64 public void testGetFileStatus() {
65 final byte[] MAGIC = { 0xB, 0xE, 0x0, 0x5 };
68 // truncate test file and write MAGIC (4 bytes) to it.
69 FileOutputStream os = new FileOutputStream(mTestFile, false);
70 os.write(MAGIC, 0, 4);
73 } catch (FileNotFoundException e) {
74 Assert.fail("File was removed durning test" + e);
75 } catch (IOException e) {
76 Assert.fail("Unexpected IOException: " + e);
79 Assert.assertTrue(mTestFile.exists());
80 Assert.assertTrue(FileUtils.getFileStatus(mTestFile.getPath(), null));
82 FileStatus status1 = new FileStatus();
83 FileUtils.getFileStatus(mTestFile.getPath(), status1);
85 Assert.assertEquals(4, status1.size);
87 // Sleep for at least one second so that the modification time will be different.
90 } catch (InterruptedException e) {
94 // append so we don't change the creation time.
95 FileOutputStream os = new FileOutputStream(mTestFile, true);
96 os.write(MAGIC, 0, 4);
99 } catch (FileNotFoundException e) {
100 Assert.fail("File was removed durning test" + e);
101 } catch (IOException e) {
102 Assert.fail("Unexpected IOException: " + e);
105 FileStatus status2 = new FileStatus();
106 FileUtils.getFileStatus(mTestFile.getPath(), status2);
108 Assert.assertEquals(8, status2.size);
109 Assert.assertTrue(status2.mtime > status1.mtime);
113 Assert.assertFalse(mTestFile.exists());
114 Assert.assertFalse(FileUtils.getFileStatus(mTestFile.getPath(), null));
117 // TODO: test setPermissions(), getPermissions()
120 public void testCopyFile() throws Exception {
121 assertFalse(mCopyFile.exists());
122 FileUtils.copyFile(mTestFile, mCopyFile);
123 assertTrue(mCopyFile.exists());
124 assertEquals(TEST_DATA, FileUtils.readTextFile(mCopyFile, 0, null));
128 public void testCopyToFile() throws Exception {
129 final String s = "Foo Bar";
130 assertFalse(mCopyFile.exists());
131 FileUtils.copyToFile(new ByteArrayInputStream(s.getBytes()), mCopyFile); assertTrue(mCopyFile.exists());
132 assertEquals(s, FileUtils.readTextFile(mCopyFile, 0, null));
136 public void testIsFilenameSafe() throws Exception {
137 assertTrue(FileUtils.isFilenameSafe(new File("foobar")));
138 assertTrue(FileUtils.isFilenameSafe(new File("a_b-c=d.e/0,1+23")));
139 assertFalse(FileUtils.isFilenameSafe(new File("foo*bar")));
140 assertFalse(FileUtils.isFilenameSafe(new File("foo\nbar")));
144 public void testReadTextFile() throws Exception {
145 assertEquals(TEST_DATA, FileUtils.readTextFile(mTestFile, 0, null));
147 assertEquals("ABCDE", FileUtils.readTextFile(mTestFile, 5, null));
148 assertEquals("ABCDE<>", FileUtils.readTextFile(mTestFile, 5, "<>"));
149 assertEquals(TEST_DATA.substring(0, 51) + "<>",
150 FileUtils.readTextFile(mTestFile, 51, "<>"));
151 assertEquals(TEST_DATA, FileUtils.readTextFile(mTestFile, 52, "<>"));
152 assertEquals(TEST_DATA, FileUtils.readTextFile(mTestFile, 100, "<>"));
154 assertEquals("vwxyz", FileUtils.readTextFile(mTestFile, -5, null));
155 assertEquals("<>vwxyz", FileUtils.readTextFile(mTestFile, -5, "<>"));
156 assertEquals("<>" + TEST_DATA.substring(1, 52),
157 FileUtils.readTextFile(mTestFile, -51, "<>"));
158 assertEquals(TEST_DATA, FileUtils.readTextFile(mTestFile, -52, "<>"));
159 assertEquals(TEST_DATA, FileUtils.readTextFile(mTestFile, -100, "<>"));
163 public void testReadTextFileWithZeroLengthFile() throws Exception {
164 new FileOutputStream(mTestFile).close(); // Zero out the file
165 assertEquals("", FileUtils.readTextFile(mTestFile, 0, null));
166 assertEquals("", FileUtils.readTextFile(mTestFile, 1, "<>"));
167 assertEquals("", FileUtils.readTextFile(mTestFile, 10, "<>"));
168 assertEquals("", FileUtils.readTextFile(mTestFile, -1, "<>"));
169 assertEquals("", FileUtils.readTextFile(mTestFile, -10, "<>"));