/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* 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
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package javax.microedition.rms;
import com.sun.midp.i3test.*;
import java.util.Random;
public class TestRecordStore extends TestCase {
final String RECORD_STORE_NAME = "testrms";
byte[] smallData;
byte[] largeData;
int recordId1, recordId2;
/**
* Add a small record then a large record.
*/
private void setupRSTest() throws RecordStoreException {
smallData = new byte[5]; // 5 Bytes
// Contents are 0,1,...,n
for (int i = 0; i < smallData.length; i++) {
smallData[i] = (byte)i;
}
Random random = new Random();
largeData = new byte[10*1024]; // 10K Bytes
// Contents are 0,1,...,n
for (int i = 0; i < largeData.length; i++) {
largeData[i] = (byte)(random.nextInt(8) & 0xff);
}
// Remove old record store
try {
RecordStore.deleteRecordStore(RECORD_STORE_NAME);
} catch (RecordStoreNotFoundException rnfe) {}
RecordStore store = RecordStore.openRecordStore(RECORD_STORE_NAME, true);
recordId1 = store.addRecord(smallData, 0, smallData.length);
recordId2 = store.addRecord(largeData, 0, largeData.length);
store.closeRecordStore();
}
private void testSequentialRMS() throws RecordStoreException {
RecordStore store1 = null;
RecordStore store2 = null;
boolean exceptionThrown = false;
declare("Sequential access");
store1 = RecordStore.openForLockTesting(RECORD_STORE_NAME);
try {
try {
store2 = RecordStore.openForLockTesting(RECORD_STORE_NAME);
} catch (RecordStoreException re) {
exceptionThrown = true;
}
if (store2 != null) {
store2.closeRecordStore();
}
} finally {
store1.closeRecordStore();
}
assertTrue(exceptionThrown);
}
private void testEnumeration() throws RecordStoreException {
declare("getNumRecords");
RecordStore store = RecordStore.openRecordStore(RECORD_STORE_NAME, false);
assertTrue(store.getNumRecords() == 2);
declare("Enumeration nextRecordId");
RecordEnumeration recordenumeration = store.enumerateRecords(null, null,
true);
assertTrue("recordId1", recordenumeration.nextRecordId() == recordId1);
assertTrue("recordId2", recordenumeration.nextRecordId() == recordId2);
declare("Enumeration nextRecord");
byte record[];
int i;
recordenumeration.reset();
record = recordenumeration.nextRecord();
for (i = 0; i < record.length; i++)
if (record[i] != smallData[i])
break;
assertTrue("small", record.length == smallData.length && i == record.length);
record = recordenumeration.nextRecord();
for (i = 0; i < record.length; i++)
if (record[i] != largeData[i])
break;
assertTrue("large", record.length == largeData.length && i == record.length);
store.closeRecordStore();
}
private void testCompactRecords() throws RecordStoreException {
declare("testCompactRecords");
RecordStore store = RecordStore.openRecordStore(RECORD_STORE_NAME, false);
// Delete the small record
store.deleteRecord(recordId1);
// Close the store to exercise compacting code
store.closeRecordStore();
// Reopen and check for the large record
store = RecordStore.openRecordStore(RECORD_STORE_NAME, false);
byte record[] = store.getRecord(recordId2);
int i;
for (i = 0; i < record.length; i++)
if (record[i] != largeData[i])
break;
assertTrue(record.length == largeData.length && i == record.length);
store.closeRecordStore();
}
/**
* Creates a pseudo random record which is actually a fragment of
* largeData array.
* @param size of record required
* @return byte array of size requested
*/
private byte[] getRandomRecord(int size) {
byte[] record = new byte[size];
byte ind = (byte) (new Random().nextInt(7) & 0x7f);
record[0] = ind;
for (int i = 1; i < size; i++) {
record[i] = largeData[(ind + i) % largeData.length];
}
return record;
}
/**
* Checks if record given could be created by getRandomRecord().
* @param record record to be checked
* @return false if record with content given cannot be created by
* getRandomRecord()
*/
private boolean isValidRandomRecord(byte[] record) {
if (record.length < 2) {
return false;
}
byte ind = record [0];
if (ind < 0) {
return false;
}
for (int i = 1; i < record.length; i++) {
if (record[i] != largeData[(ind + i) % largeData.length]) {
return false;
}
}
return true;
}
private void testSizeLimit() throws RecordStoreException {
final int RECORD_SIZE = 64;
final int DOUBLE_SIZE = RECORD_SIZE * 2;
int id1 = -1;
int id2 = -1;
declare("testSizeLimit");
RecordStore store = RecordStore.openRecordStore(RECORD_STORE_NAME, true);
try {
id1 = store.addRecord(getRandomRecord(RECORD_SIZE), 0, RECORD_SIZE);
while (true) {
id2 = store.addRecord(getRandomRecord(RECORD_SIZE),
0, RECORD_SIZE);
}
} catch (RecordStoreFullException e) {
// Ok, the record store is full, now deleting two short records
assertTrue("failed adding two distinct records", id1 != id2);
store.deleteRecord(id1);
store.deleteRecord(id2);
// Now there should be enough space for one double-size record
try {
store.addRecord(getRandomRecord(DOUBLE_SIZE), 0, DOUBLE_SIZE);
//Checking data is not damaged by preceding operations
RecordEnumeration enum = store.enumerateRecords(null, null, false);
boolean damaged = false;
while (enum.hasNextElement()) {
int id = enum.nextRecordId();
byte[] record = store.getRecord(id);
if (id == id1 || id == id2 || !isValidRandomRecord(record)) {
damaged = true;
break;
}
}
assertTrue("data is damaged", !damaged);
} catch (Throwable t) {
fail("Failed adding a record to freed space: " + t);
}
}
store.closeRecordStore();
}
private void cleanup() throws RecordStoreException {
RecordStore.deleteRecordStore(RECORD_STORE_NAME);
}
public void runTests() throws Throwable {
setupRSTest();
try {
testSequentialRMS();
testEnumeration();
testCompactRecords();
cleanup();
testSizeLimit();
} catch (Throwable t) {
t.printStackTrace();
} finally {
cleanup();
}
}
}
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