/*
* JBoss, Home of Professional Open Source.
*
* Copyright 2012 Red Hat, Inc. and/or its affiliates, and individual
* contributors as indicated by the @author tags.
*
* 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 org.xnio.streams;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import org.junit.Test;
/**
* Test for {@link ReaderInputStream}.
*
* @author <a href="mailto:flavia.rainone@jboss.com">Flavia Rainone</a>
*/
public class ReaderInputStreamTestCase {
@Test
public void invalidConstructorArguments() throws IOException {
// null writer
Exception expected = null;
try {
new ReaderInputStream(null);
} catch (IllegalArgumentException e) {
expected = e;
}
assertNotNull(expected);
expected = null;
try {
new ReaderInputStream(null, Charset.defaultCharset());
} catch (IllegalArgumentException e) {
expected = e;
}
assertNotNull(expected);
expected = null;
try {
new ReaderInputStream(null, Charset.defaultCharset().newEncoder());
} catch (IllegalArgumentException e) {
expected = e;
}
assertNotNull(expected);
expected = null;
try {
new ReaderInputStream(null, "UTF-8");
} catch (IllegalArgumentException e) {
expected = e;
}
assertNotNull(expected);
expected = null;
try {
new ReaderInputStream(null, Charset.defaultCharset().newEncoder(), 10000);
} catch (IllegalArgumentException e) {
expected = e;
}
assertNotNull(expected);
// null char set
final Reader reader = new StringReader("foo");
expected = null;
try {
new ReaderInputStream(reader, (Charset) null);
} catch (NullPointerException e) {
expected = e;
}
assertNotNull(expected);
// null char set name
expected = null;
try {
new ReaderInputStream(reader, (String) null);
} catch (IllegalArgumentException e) {
expected= e;
}
assertNotNull(expected);
// null decoder
expected = null;
try {
new ReaderInputStream(reader, (CharsetEncoder) null);
} catch (IllegalArgumentException e) {
expected = e;
}
assertNotNull(expected);
expected = null;
try {
new ReaderInputStream(reader, null, 10000);
} catch (IllegalArgumentException e) {
expected = e;
}
assertNotNull(expected);
// negative buffer size
expected = null;
try {
new ReaderInputStream(reader, Charset.defaultCharset().newEncoder(), -15000);
} catch (IllegalArgumentException e) {
expected = e;
}
assertNotNull(expected);
// zero buffer length
expected = null;
try {
new ReaderInputStream(reader, Charset.defaultCharset().newEncoder(), 0);
} catch (IllegalArgumentException e) {
expected = e;
}
assertNotNull(expected);
}
@Test
public void read1() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("test"));
assertEquals('t', stream.read());
assertEquals('e', stream.read());
assertEquals('s', stream.read());
assertEquals('t', stream.read());
assertEquals(-1, stream.read());
closeStream(stream);
}
@Test
public void read2() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("test"), "UTF-8");
byte[] bytes = new byte[10];
assertEquals(4, stream.read(bytes));
assertEquals('t', bytes[0]);
assertEquals('e', bytes[1]);
assertEquals('s', bytes[2]);
assertEquals('t', bytes[3]);
assertEquals(-1, stream.read(bytes));
closeStream(stream);
}
@Test
public void read3() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("test"),
Charset.defaultCharset().newEncoder(), 1);
assertEquals('t', stream.read());
assertEquals('e', stream.read());
assertEquals('s', stream.read());
assertEquals('t', stream.read());
assertEquals(-1, stream.read());
closeStream(stream);
}
@Test
public void read4() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("test"),
Charset.defaultCharset().newEncoder(), 1);
byte[] bytes = new byte[2];
assertEquals(2, stream.read(bytes));
assertEquals('t', bytes[0]);
assertEquals('e', bytes[1]);
assertEquals(2, stream.read(bytes));
assertEquals('s', bytes[0]);
assertEquals('t', bytes[1]);
assertEquals(-1, stream.read(bytes));
closeStream(stream);
}
@Test
public void read5() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader(""),
Charset.defaultCharset().newEncoder(), 1);
assertEquals(-1, stream.read(new byte[5]));
assertEquals(-1, stream.read());
closeStream(stream);
}
@Test
public void readAfterAvailable1() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("test"));
assertEquals(0, stream.available());
assertEquals('t', stream.read());
assertEquals(3, stream.available());
assertEquals('e', stream.read());
assertEquals(2, stream.available());
assertEquals('s', stream.read());
assertEquals(1, stream.available());
assertEquals('t', stream.read());
assertEquals(0, stream.available());
assertEquals(-1, stream.read());
closeStream(stream);
}
@Test
public void readAfterAvailable2() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("test"), "UTF-8");
byte[] bytes = new byte[10];
assertEquals(0, stream.available());
assertEquals(4, stream.read(bytes));
assertEquals(0, stream.available());
assertEquals('t', bytes[0]);
assertEquals('e', bytes[1]);
assertEquals('s', bytes[2]);
assertEquals('t', bytes[3]);
assertEquals(-1, stream.read(bytes));
closeStream(stream);
}
@Test
public void readAfterAvailable3() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("test"),
Charset.defaultCharset().newEncoder(), 1);
assertEquals(0, stream.available());
assertEquals('t', stream.read());
assertEquals(0, stream.available());
assertEquals('e', stream.read());
assertEquals(0, stream.available());
assertEquals('s', stream.read());
assertEquals(0, stream.available());
assertEquals('t', stream.read());
assertEquals(0, stream.available());
assertEquals(-1, stream.read());
closeStream(stream);
}
@Test
public void readAfterAvailable4() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("test"),
Charset.defaultCharset().newEncoder(), 1);
byte[] bytes = new byte[2];
assertEquals(0, stream.available());
assertEquals(2, stream.read(bytes));
assertEquals('t', bytes[0]);
assertEquals('e', bytes[1]);
assertEquals(0, stream.available());
assertEquals(2, stream.read(bytes));
assertEquals('s', bytes[0]);
assertEquals('t', bytes[1]);
assertEquals(0, stream.available());
assertEquals(-1, stream.read(bytes));
closeStream(stream);
}
@Test
public void readAfterAvailable5() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader(""),
Charset.defaultCharset().newEncoder(), 1);
assertEquals(0, stream.available());
assertEquals(-1, stream.read(new byte[5]));
assertEquals(-1, stream.read());
closeStream(stream);
}
@Test
public void skip1() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("skip all this - data"));
assertEquals(16, stream.skip(16));
assertEquals(4, stream.available());
assertEquals('d', stream.read());
assertEquals(3, stream.available());
assertEquals('a', stream.read());
assertEquals(2, stream.available());
assertEquals('t', stream.read());
assertEquals(1, stream.available());
assertEquals('a', stream.read());
assertEquals(0, stream.available());
assertEquals(-1, stream.read());
closeStream(stream);
}
@Test
public void skip2() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("skip all this - data"));
assertEquals(20, stream.skip(Long.MAX_VALUE));
assertEquals(0, stream.available());
assertEquals(-1, stream.read());
closeStream(stream);
}
@Test
public void skipEmpty() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader(""));
assertEquals(0, stream.skip(1000));
assertEquals(0, stream.available());
closeStream(stream);
}
@Test
public void closeStreamBeforeRead() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("close before read"));
assertEquals(0, stream.available());
closeStream(stream);
}
@Test
public void closeStreamBeforeReadIsDone() throws IOException {
final ReaderInputStream stream = new ReaderInputStream(new StringReader("close before read"));
assertEquals(0, stream.available());
assertEquals('c', stream.read());
assertEquals(16, stream.available());
closeStream(stream);
}
private void closeStream(ReaderInputStream stream) throws IOException {
stream.close();
assertEquals(0, stream.available());
IOException expected = null;
try {
stream.read();
} catch (IOException e) {
expected = e;
}
assertNotNull(expected);
expected = null;
try {
stream.read(new byte[5]);
} catch (IOException e) {
expected = e;
}
assertNotNull(expected);
// idempotent
stream.close();
assertEquals(0, stream.available());
expected = null;
try {
stream.read(new byte[10]);
} catch (IOException e) {
expected = e;
}
assertNotNull(expected);
expected = null;
try {
stream.read();
} catch (IOException e) {
expected = e;
}
assertNotNull(expected);
assertNotNull(stream.toString());
}
}