/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.camel.support;
import java.io.ByteArrayInputStream;
import junit.framework.TestCase;
/**
*
*/
public class RecordableReaderTest extends TestCase {
private static final byte[] DATA;
static {
DATA = new byte[512];
final int radix = 0x7f - 0x20;
for (int i = 0; i < 512; i++) {
DATA[i] = (byte) (i % radix + 0x20);
}
}
public void testReadAndGetTextsBufferPurge() throws Exception {
RecordableInputStream ris = new RecordableInputStream(new ByteArrayInputStream(DATA), "utf-8");
assertEquals(0, ris.size());
byte[] buf = new byte[64];
// 8 * 64 = 512
for (int i = 0; i < 8; i++) {
// read in 64 bytes
int n = ris.read(buf, 0, buf.length);
assertEquals(64, n);
assertEquals(64, ris.size());
int offset = i * 64;
// consume the first 32 bytes
String text = ris.getText(32);
assertEquals(new String(DATA, offset, 32, "utf-8"), text);
assertEquals(32, ris.size());
// consume the other 32 bytes
text = ris.getText(32);
assertEquals(new String(DATA, offset + 32, 32, "utf-8"), text);
assertEquals(0, ris.size());
ris.record();
}
ris.close();
}
public void testReadAndGetTextsAutoStopRecord() throws Exception {
RecordableInputStream ris = new RecordableInputStream(new ByteArrayInputStream(DATA), "utf-8");
assertEquals(0, ris.size());
byte[] buf = new byte[64];
// read 64 bytes
int n = ris.read(buf, 0, buf.length);
assertEquals(64, n);
assertEquals(64, ris.size());
// consume the 64 bytes
String text = ris.getText(64);
assertEquals(new String(DATA, 0, 64, "utf-8"), text);
assertEquals(0, ris.size());
// read the next 64 bytes
n = ris.read(buf, 0, buf.length);
assertEquals(64, n);
assertEquals(0, ris.size());
// turn back on the recording and read the next 64 bytes
ris.record();
n = ris.read(buf, 0, buf.length);
assertEquals(64, n);
assertEquals(64, ris.size());
// consume the 64 bytes
text = ris.getText(64);
// 64 * 2 = 128
assertEquals(new String(DATA, 128, 64, "utf-8"), text);
assertEquals(0, ris.size());
ris.close();
}
}