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/* Copyright 2017 Google Inc. All Rights Reserved.
Distributed under MIT license.
See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
*/
package org.brotli.wrapper.dec;
import static org.junit.Assert.assertEquals;
import org.brotli.integration.BrotliJniTestBase;
import java.io.IOException;
import java.io.InputStream;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for {@link org.brotli.wrapper.dec.BrotliInputStream}. */
@RunWith(JUnit4.class)
public class EagerStreamTest extends BrotliJniTestBase {
@Test
public void testEagerReading() throws IOException {
final StringBuilder log = new StringBuilder();
final byte[] data = {0, 0, 16, 42, 3};
InputStream source = new InputStream() {
int index;
@Override
public int read() {
if (index < data.length) {
log.append("<").append(index);
return data[index++];
} else {
log.append("<#");
return -1;
}
}
@Override
public int read(byte[] b) throws IOException {
return read(b, 0, b.length);
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
if (len < 1) {
return 0;
}
int d = read();
if (d == -1) {
return 0;
}
b[off] = (byte) d;
return 1;
}
};
BrotliInputStream reader = new BrotliInputStream(source);
reader.enableEagerOutput();
int count = 0;
while (true) {
log.append("^").append(count);
int b = reader.read();
if (b == -1) {
log.append(">#");
break;
} else {
log.append(">").append(count++);
}
}
// Lazy log: ^0<0<1<2<3<4>0^1>#
assertEquals("^0<0<1<2<3>0^1<4>#", log.toString());
}
}
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