/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 tests.api.java.io;
import java.io.IOException;
import java.io.PipedReader;
import java.io.PipedWriter;
public class PipedWriterTest extends junit.framework.TestCase {
static class PReader implements Runnable {
public PipedReader pr;
public char[] buf = new char[10];
public PReader(PipedWriter pw) {
try {
pr = new PipedReader(pw);
} catch (IOException e) {
System.out.println("Exception setting up reader: "
+ e.toString());
}
}
public PReader(PipedReader pr) {
this.pr = pr;
}
public void run() {
try {
int r = 0;
for (int i = 0; i < buf.length; i++) {
r = pr.read();
if (r == -1)
break;
buf[i] = (char) r;
}
} catch (Exception e) {
System.out.println("Exception reading ("
+ Thread.currentThread().getName() + "): "
+ e.toString());
}
}
}
Thread rdrThread;
PReader reader;
PipedWriter pw;
/**
* @tests java.io.PipedWriter#PipedWriter()
*/
public void test_Constructor() {
// Test for method java.io.PipedWriter()
// Used in tests
}
/**
* @tests java.io.PipedWriter#PipedWriter(java.io.PipedReader)
*/
public void test_ConstructorLjava_io_PipedReader() throws Exception {
// Test for method java.io.PipedWriter(java.io.PipedReader)
char[] buf = new char[10];
"HelloWorld".getChars(0, 10, buf, 0);
PipedReader rd = new PipedReader();
pw = new PipedWriter(rd);
rdrThread = new Thread(reader = new PReader(rd), "Constructor(Reader)");
rdrThread.start();
pw.write(buf);
pw.close();
rdrThread.join(500);
assertEquals("Failed to construct writer", "HelloWorld", new String(
reader.buf));
}
/**
* @tests java.io.PipedWriter#close()
*/
public void test_close() throws Exception {
// Test for method void java.io.PipedWriter.close()
char[] buf = new char[10];
"HelloWorld".getChars(0, 10, buf, 0);
PipedReader rd = new PipedReader();
pw = new PipedWriter(rd);
reader = new PReader(rd);
pw.close();
try {
pw.write(buf);
fail("Should have thrown exception when attempting to write to closed writer.");
} catch (Exception e) {
// correct
}
}
/**
* @tests java.io.PipedWriter#connect(java.io.PipedReader)
*/
public void test_connectLjava_io_PipedReader() throws Exception {
// Test for method void java.io.PipedWriter.connect(java.io.PipedReader)
char[] buf = new char[10];
"HelloWorld".getChars(0, 10, buf, 0);
PipedReader rd = new PipedReader();
pw = new PipedWriter();
pw.connect(rd);
rdrThread = new Thread(reader = new PReader(rd), "connect");
rdrThread.start();
pw.write(buf);
pw.close();
rdrThread.join(500);
assertEquals("Failed to write correct chars", "HelloWorld", new String(
reader.buf));
}
/**
* @tests java.io.PipedWriter#flush()
*/
public void test_flush() throws Exception {
// Test for method void java.io.PipedWriter.flush()
char[] buf = new char[10];
"HelloWorld".getChars(0, 10, buf, 0);
pw = new PipedWriter();
rdrThread = new Thread(reader = new PReader(pw), "flush");
rdrThread.start();
pw.write(buf);
pw.flush();
rdrThread.join(700);
assertEquals("Failed to flush chars", "HelloWorld", new String(
reader.buf));
}
/**
* @tests java.io.PipedWriter#write(char[], int, int)
*/
public void test_write$CII() throws Exception {
// Test for method void java.io.PipedWriter.write(char [], int, int)
char[] buf = new char[10];
"HelloWorld".getChars(0, 10, buf, 0);
pw = new PipedWriter();
rdrThread = new Thread(reader = new PReader(pw), "writeCII");
rdrThread.start();
pw.write(buf, 0, 10);
pw.close();
rdrThread.join(1000);
assertEquals("Failed to write correct chars", "HelloWorld", new String(
reader.buf));
}
/**
* @tests java.io.PipedWriter#write(char[], int, int) Regression for
* HARMONY-387
*/
public void test_write$CII_2() throws IOException {
PipedReader pr = new PipedReader();
PipedWriter obj = null;
try {
obj = new java.io.PipedWriter(pr);
obj.write(new char[0], (int) 0, (int) -1);
fail("IndexOutOfBoundsException expected");
} catch (IndexOutOfBoundsException t) {
assertEquals(
"IndexOutOfBoundsException rather than a subclass expected",
IndexOutOfBoundsException.class, t.getClass());
}
}
/**
* @tests java.io.PipedWriter#write(char[], int, int)
*/
public void test_write$CII_3() throws IOException {
PipedReader pr = new PipedReader();
PipedWriter obj = null;
try {
obj = new java.io.PipedWriter(pr);
obj.write(new char[0], (int) -1, (int) 0);
fail("IndexOutOfBoundsException expected");
} catch (ArrayIndexOutOfBoundsException t) {
fail("IndexOutOfBoundsException expected");
} catch (IndexOutOfBoundsException t) {}
}
/**
* @tests java.io.PipedWriter#write(char[], int, int)
*/
public void test_write$CII_4() throws IOException {
PipedReader pr = new PipedReader();
PipedWriter obj = null;
try {
obj = new java.io.PipedWriter(pr);
obj.write(new char[0], (int) -1, (int) -1);
fail("IndexOutOfBoundsException expected");
} catch (ArrayIndexOutOfBoundsException t) {
fail("IndexOutOfBoundsException expected");
} catch (IndexOutOfBoundsException t) {}
}
/**
* @tests java.io.PipedWriter#write(char[], int, int)
*/
public void test_write$CII_5() throws IOException {
PipedReader pr = new PipedReader();
PipedWriter obj = null;
try {
obj = new PipedWriter(pr);
obj.write((char[]) null, (int) -1, (int) 0);
fail("NullPointerException expected");
} catch (IndexOutOfBoundsException t) {
fail("NullPointerException expected");
} catch (NullPointerException t) {}
}
/**
* @tests java.io.PipedWriter#write(char[], int, int)
*/
public void test_write$CII_6() throws IOException {
PipedReader pr = new PipedReader();
PipedWriter obj = null;
try {
obj = new PipedWriter(pr);
obj.write((char[]) null, (int) -1, (int) -1);
fail("NullPointerException expected");
} catch (IndexOutOfBoundsException t) {
fail("NullPointerException expected");
} catch (NullPointerException t) {}
}
/**
* @tests java.io.PipedWriter#write(char[], int, int)
*/
public void test_write$CII_notConnected() throws IOException {
// Regression test for Harmony-2404
// create not connected pipe
PipedWriter obj = new PipedWriter();
// char array is null
try {
obj.write((char[]) null, 0, 1);
fail("IOException expected");
} catch (IOException ioe) {
// expected
}
// negative offset
try {
obj.write( new char[] { 1 }, -10, 1);
fail("IOException expected");
} catch (IOException ioe) {
// expected
}
// wrong offset
try {
obj.write( new char[] { 1 }, 10, 1);
fail("IOException expected");
} catch (IOException ioe) {
// expected
}
// negative length
try {
obj.write( new char[] { 1 }, 0, -10);
fail("IOException expected");
} catch (IOException ioe) {
// expected
}
// all valid params
try {
obj.write( new char[] { 1, 1 }, 0, 1);
fail("IOException expected");
} catch (IOException ioe) {
// expected
}
}
/**
* @tests java.io.PipedWriter#write(int)
*/
public void test_write_I_MultiThread() throws IOException {
final PipedReader pr = new PipedReader();
final PipedWriter pw = new PipedWriter();
// test if writer recognizes dead reader
pr.connect(pw);
class WriteRunnable implements Runnable {
boolean pass = false;
boolean readerAlive = true;
public void run() {
try {
pw.write(1);
while (readerAlive) {
// wait the reader thread dead
}
try {
// should throw exception since reader thread
// is now dead
pw.write(1);
} catch (IOException e) {
pass = true;
}
} catch (IOException e) {
//ignore
}
}
}
WriteRunnable writeRunnable = new WriteRunnable();
Thread writeThread = new Thread(writeRunnable);
class ReadRunnable implements Runnable {
boolean pass;
public void run() {
try {
pr.read();
pass = true;
} catch (IOException e) {
//ignore
}
}
}
ReadRunnable readRunnable = new ReadRunnable();
Thread readThread = new Thread(readRunnable);
writeThread.start();
readThread.start();
while (readThread.isAlive()) {
//wait the reader thread dead
}
writeRunnable.readerAlive = false;
assertTrue("reader thread failed to read", readRunnable.pass);
while (writeThread.isAlive()) {
//wait the writer thread dead
}
assertTrue("writer thread failed to recognize dead reader",
writeRunnable.pass);
}
/**
* @tests java.io.PipedWriter#write(char[],int,int)
*/
public void test_write_$CII_MultiThread() throws Exception {
final PipedReader pr = new PipedReader();
final PipedWriter pw = new PipedWriter();
// test if writer recognizes dead reader
pr.connect(pw);
class WriteRunnable implements Runnable {
boolean pass = false;
boolean readerAlive = true;
public void run() {
try {
pw.write(1);
while (readerAlive) {
// wait the reader thread dead
}
try {
// should throw exception since reader thread
// is now dead
char[] buf = new char[10];
pw.write(buf, 0, 10);
} catch (IOException e) {
pass = true;
}
} catch (IOException e) {
//ignore
}
}
}
WriteRunnable writeRunnable = new WriteRunnable();
Thread writeThread = new Thread(writeRunnable);
class ReadRunnable implements Runnable {
boolean pass;
public void run() {
try {
pr.read();
pass = true;
} catch (IOException e) {
//ignore
}
}
}
ReadRunnable readRunnable = new ReadRunnable();
Thread readThread = new Thread(readRunnable);
writeThread.start();
readThread.start();
while (readThread.isAlive()) {
//wait the reader thread dead
}
writeRunnable.readerAlive = false;
assertTrue("reader thread failed to read", readRunnable.pass);
while (writeThread.isAlive()) {
//wait the writer thread dead
}
assertTrue("writer thread failed to recognize dead reader",
writeRunnable.pass);
}
/**
* @tests java.io.PipedWriter#write(int)
*/
public void test_writeI() throws Exception {
// Test for method void java.io.PipedWriter.write(int)
pw = new PipedWriter();
rdrThread = new Thread(reader = new PReader(pw), "writeI");
rdrThread.start();
pw.write(1);
pw.write(2);
pw.write(3);
pw.close();
rdrThread.join(1000);
assertTrue("Failed to write correct chars: " + (int) reader.buf[0]
+ " " + (int) reader.buf[1] + " " + (int) reader.buf[2],
reader.buf[0] == 1 && reader.buf[1] == 2 && reader.buf[2] == 3);
}
/**
* Tears down the fixture, for example, close a network connection. This
* method is called after a test is executed.
*/
protected void tearDown() throws Exception {
try {
if (rdrThread != null) {
rdrThread.interrupt();
}
} catch (Exception ignore) {}
try {
if (pw != null) {
pw.close();
}
} catch (Exception ignore) {}
super.tearDown();
}
}