1 files changed, 171 insertions, 0 deletions
diff --git a/core/tests/coretests/src/android/os/FileUtilsTest.java b/core/tests/coretests/src/android/os/FileUtilsTest.java
new file mode 100644
index 0000000..f12cbe1
--- /dev/null
+++ b/core/tests/coretests/src/android/os/FileUtilsTest.java
@@ -0,0 +1,171 @@
+/*
+ * 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, "<>"));
+    }
+}