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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.handler;
import org.junit.Test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.ByteBuffer;
import java.util.concurrent.Future;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
/**
* @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen Hult</a>
*/
public class UnsafeContentInputStreamTestCase {
@Test
public void requireThatBytesCanBeRead() throws IOException {
BufferedContentChannel channel = new BufferedContentChannel();
FastContentWriter writer = new FastContentWriter(channel);
writer.write("Hello ");
writer.write("World!");
writer.close();
BufferedReader reader = asBufferedReader(channel);
assertEquals("Hello World!", reader.readLine());
assertNull(reader.readLine());
}
@SuppressWarnings("deprecation")
@Test
public void requireThatCompletionsAreCalledWithDeprecatedContentWriter() throws IOException {
BufferedContentChannel channel = new BufferedContentChannel();
FastContentWriter writer = new FastContentWriter(channel);
writer.write("foo");
writer.close();
InputStream stream = asInputStream(channel);
assertEquals('f', stream.read());
assertEquals('o', stream.read());
assertEquals('o', stream.read());
assertEquals(-1, stream.read());
assertTrue(writer.isDone());
}
@Test
public void requireThatCompletionsAreCalled() throws IOException {
BufferedContentChannel channel = new BufferedContentChannel();
FastContentWriter writer = new FastContentWriter(channel);
writer.write("foo");
writer.close();
InputStream stream = asInputStream(channel);
assertEquals('f', stream.read());
assertEquals('o', stream.read());
assertEquals('o', stream.read());
assertEquals(-1, stream.read());
assertTrue(writer.isDone());
}
@SuppressWarnings("deprecation")
@Test
public void requireThatCloseDrainsStreamWithDeprecatedContentWriter() {
BufferedContentChannel channel = new BufferedContentChannel();
FastContentWriter writer = new FastContentWriter(channel);
writer.write("foo");
writer.close();
asInputStream(channel).close();
assertTrue(writer.isDone());
}
@Test
public void requireThatCloseDrainsStream() {
BufferedContentChannel channel = new BufferedContentChannel();
FastContentWriter writer = new FastContentWriter(channel);
writer.write("foo");
writer.close();
asInputStream(channel).close();
assertTrue(writer.isDone());
}
@Test
public void requireThatAvailableIsNotBlocking() throws IOException {
BufferedContentChannel channel = new BufferedContentChannel();
InputStream stream = asInputStream(channel);
assertEquals(0, stream.available());
channel.write(ByteBuffer.wrap(new byte[] { 6, 9 }), null);
assertTrue(stream.available() > 0);
assertEquals(6, stream.read());
assertTrue(stream.available() > 0);
assertEquals(9, stream.read());
assertEquals(0, stream.available());
channel.close(null);
assertEquals(-1, stream.read());
assertEquals(0, stream.available());
}
@Test
public void requireThatReadLargeArrayIsNotBlocking() throws IOException {
BufferedContentChannel channel = new BufferedContentChannel();
InputStream stream = asInputStream(channel);
assertEquals(0, stream.available());
channel.write(ByteBuffer.wrap(new byte[] { 6, 9 }), null);
assertTrue(stream.available() > 0);
byte[] buf = new byte[69];
assertEquals(2, stream.read(buf));
assertEquals(6, buf[0]);
assertEquals(9, buf[1]);
assertEquals(0, stream.available());
channel.close(null);
assertEquals(-1, stream.read(buf));
assertEquals(0, stream.available());
}
@Test
public void requireThatAllByteValuesCanBeRead() throws IOException {
ReadableContentChannel content = new ReadableContentChannel();
InputStream in = new UnsafeContentInputStream(content);
for (int i = Byte.MIN_VALUE; i <= Byte.MAX_VALUE; ++i) {
content.write(ByteBuffer.wrap(new byte[] { (byte)i }), null);
assertEquals(i, (byte)in.read());
}
}
private static BufferedReader asBufferedReader(BufferedContentChannel channel) {
return new BufferedReader(new InputStreamReader(asInputStream(channel)));
}
private static UnsafeContentInputStream asInputStream(BufferedContentChannel channel) {
return new UnsafeContentInputStream(channel.toReadable());
}
}
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