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/*
* Copyright (C) 2018 Square, Inc.
*
* 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 okio;
import java.io.File;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.WritableByteChannel;
import java.nio.file.StandardOpenOption;
import kotlin.text.Charsets;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import static junit.framework.TestCase.assertEquals;
import static junit.framework.TestCase.assertFalse;
import static junit.framework.TestCase.assertTrue;
/** Test interop between our beloved Okio and java.nio. */
public final class NioTest {
@Rule public TemporaryFolder temporaryFolder = new TemporaryFolder();
@Test public void sourceIsOpen() throws Exception {
BufferedSource source = Okio.buffer((Source) new Buffer());
assertTrue(source.isOpen());
source.close();
assertFalse(source.isOpen());
}
@Test public void sinkIsOpen() throws Exception {
BufferedSink sink = Okio.buffer((Sink) new Buffer());
assertTrue(sink.isOpen());
sink.close();
assertFalse(sink.isOpen());
}
@Test public void writableChannelNioFile() throws Exception {
File file = temporaryFolder.newFile();
FileChannel fileChannel = FileChannel.open(file.toPath(), StandardOpenOption.WRITE);
testWritableByteChannel(fileChannel);
BufferedSource emitted = Okio.buffer(Okio.source(file));
assertEquals("defghijklmnopqrstuvw", emitted.readUtf8());
emitted.close();
}
@Test public void writableChannelBuffer() throws Exception {
Buffer buffer = new Buffer();
testWritableByteChannel(buffer);
assertEquals("defghijklmnopqrstuvw", buffer.readUtf8());
}
@Test public void writableChannelBufferedSink() throws Exception {
Buffer buffer = new Buffer();
BufferedSink bufferedSink = Okio.buffer((Sink) buffer);
testWritableByteChannel(bufferedSink);
assertEquals("defghijklmnopqrstuvw", buffer.readUtf8());
}
@Test public void readableChannelNioFile() throws Exception {
File file = temporaryFolder.newFile();
BufferedSink initialData = Okio.buffer(Okio.sink(file));
initialData.writeUtf8("abcdefghijklmnopqrstuvwxyz");
initialData.close();
FileChannel fileChannel = FileChannel.open(file.toPath(), StandardOpenOption.READ);
testReadableByteChannel(fileChannel);
}
@Test public void readableChannelBuffer() throws Exception {
Buffer buffer = new Buffer();
buffer.writeUtf8("abcdefghijklmnopqrstuvwxyz");
testReadableByteChannel(buffer);
}
@Test public void readableChannelBufferedSource() throws Exception {
Buffer buffer = new Buffer();
BufferedSource bufferedSource = Okio.buffer((Source) buffer);
buffer.writeUtf8("abcdefghijklmnopqrstuvwxyz");
testReadableByteChannel(bufferedSource);
}
/**
* Does some basic writes to {@code channel}. We execute this against both Okio's channels and
* also a standard implementation from the JDK to confirm that their behavior is consistent.
*/
private void testWritableByteChannel(WritableByteChannel channel) throws Exception {
assertTrue(channel.isOpen());
ByteBuffer byteBuffer = ByteBuffer.allocate(1024);
byteBuffer.put("abcdefghijklmnopqrstuvwxyz".getBytes(Charsets.UTF_8));
byteBuffer.flip();
byteBuffer.position(3);
byteBuffer.limit(23);
int byteCount = channel.write(byteBuffer);
assertEquals(20, byteCount);
assertEquals(23, byteBuffer.position());
assertEquals(23, byteBuffer.limit());
channel.close();
assertEquals(channel instanceof Buffer, channel.isOpen()); // Buffer.close() does nothing.
}
/**
* Does some basic reads from {@code channel}. We execute this against both Okio's channels and
* also a standard implementation from the JDK to confirm that their behavior is consistent.
*/
private void testReadableByteChannel(ReadableByteChannel channel) throws Exception {
assertTrue(channel.isOpen());
ByteBuffer byteBuffer = ByteBuffer.allocate(1024);
byteBuffer.position(3);
byteBuffer.limit(23);
int byteCount = channel.read(byteBuffer);
assertEquals(20, byteCount);
assertEquals(23, byteBuffer.position());
assertEquals(23, byteBuffer.limit());
channel.close();
assertEquals(channel instanceof Buffer, channel.isOpen()); // Buffer.close() does nothing.
byteBuffer.flip();
byteBuffer.position(3);
byte[] data = new byte[byteBuffer.remaining()];
byteBuffer.get(data);
assertEquals("abcdefghijklmnopqrst", new String(data, Charsets.UTF_8));
}
}
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