russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
87 lines
2.8 KiB
Java
87 lines
2.8 KiB
Java
/*
|
|
* Copyright (c) 2021, 2026, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code 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 code 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 in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
/*
|
|
* @test
|
|
* @bug 4926314
|
|
* @summary Test for CharArrayReader#read(CharBuffer).
|
|
* @run junit ReadCharBuffer
|
|
*/
|
|
|
|
import java.io.CharArrayReader;
|
|
import java.io.IOException;
|
|
import java.io.Reader;
|
|
import java.nio.ByteBuffer;
|
|
import java.nio.CharBuffer;
|
|
import java.util.Arrays;
|
|
|
|
import org.junit.jupiter.params.ParameterizedTest;
|
|
import org.junit.jupiter.params.provider.MethodSource;
|
|
|
|
import static org.junit.jupiter.api.Assertions.assertEquals;
|
|
|
|
public class ReadCharBuffer {
|
|
|
|
private static final int BUFFER_SIZE = 7;
|
|
|
|
public static CharBuffer[] buffers() {
|
|
// test both on-heap and off-heap buffers as they may use different code paths
|
|
return new CharBuffer[] {
|
|
CharBuffer.allocate(BUFFER_SIZE),
|
|
ByteBuffer.allocateDirect(BUFFER_SIZE * 2).asCharBuffer()
|
|
};
|
|
}
|
|
|
|
@ParameterizedTest
|
|
@MethodSource("buffers")
|
|
public void read(CharBuffer buffer) throws IOException {
|
|
fillBuffer(buffer);
|
|
|
|
try (Reader reader = new CharArrayReader("ABCD".toCharArray())) {
|
|
buffer.limit(3);
|
|
buffer.position(1);
|
|
assertEquals(2, reader.read(buffer));
|
|
assertEquals(3, buffer.position());
|
|
assertEquals(3, buffer.limit());
|
|
|
|
buffer.limit(7);
|
|
buffer.position(4);
|
|
assertEquals(2, reader.read(buffer));
|
|
assertEquals(6, buffer.position());
|
|
assertEquals(7, buffer.limit());
|
|
|
|
assertEquals(-1, reader.read(buffer));
|
|
}
|
|
|
|
buffer.clear();
|
|
assertEquals("xABxCDx", buffer.toString());
|
|
}
|
|
|
|
private void fillBuffer(CharBuffer buffer) {
|
|
char[] filler = new char[BUFFER_SIZE];
|
|
Arrays.fill(filler, 'x');
|
|
buffer.put(filler);
|
|
buffer.clear();
|
|
}
|
|
|
|
}
|