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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.handler;
import com.yahoo.text.Utf8;
import org.junit.jupiter.api.Test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.ByteBuffer;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;
/**
* @author Simon Thoresen Hult
*/
public class UnsafeContentInputStreamTestCase {
@Test
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());
}
@Test
void testMark() throws IOException {
BufferedContentChannel channel = new BufferedContentChannel();
FastContentWriter writer = new FastContentWriter(channel);
writer.write("Hello ");
writer.write("World!");
writer.close();
InputStream stream = asInputStream(channel);
assertTrue(stream.markSupported());
int first = stream.read();
assertEquals('H', first);
stream.mark(10);
byte [] buf = new byte[8];
stream.read(buf);
assertEquals("ello Wor", Utf8.toString(buf));
stream.reset();
stream.mark(8);
buf = new byte[8];
stream.read(buf);
assertEquals("ello Wor", Utf8.toString(buf));
stream.reset();
stream.mark(5);
buf = new byte [9];
stream.read(buf);
assertEquals("ello Worl", Utf8.toString(buf));
try {
stream.reset();
fail("UnsafeContentInputStream.reset expected to fail when your read past readLimit.");
} catch (IOException e) {
assertEquals("mark has not been called, or too much has been read since marked.", e.getMessage());
} catch (Throwable t) {
fail("Did not expect " + t);
}
}
@Test
void requireThatReadAfterResetIncludesDataAfterMark() throws IOException {
ReadableContentChannel content = new ReadableContentChannel();
UnsafeContentInputStream in = new UnsafeContentInputStream(content);
byte[] outBuf = new byte[]{1, 2, 3};
content.write(ByteBuffer.wrap(outBuf), null);
in.mark(4);
assertEquals(3, in.read(new byte[]{101, 102, 103, 104}));
in.reset();
byte[] inBuf = new byte[4];
int read = in.read(inBuf);
assertEquals(3, read);
assertArrayEquals(new byte[]{1, 2, 3, 0}, inBuf);
}
@Test
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
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());
}
@Test
void requireThatCloseDrainsStreamWithDeprecatedContentWriter() {
BufferedContentChannel channel = new BufferedContentChannel();
FastContentWriter writer = new FastContentWriter(channel);
writer.write("foo");
writer.close();
asInputStream(channel).close();
assertTrue(writer.isDone());
}
@Test
void requireThatCloseDrainsStream() {
BufferedContentChannel channel = new BufferedContentChannel();
FastContentWriter writer = new FastContentWriter(channel);
writer.write("foo");
writer.close();
asInputStream(channel).close();
assertTrue(writer.isDone());
}
@Test
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
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
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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