/*
* 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;
import java.util.Arrays;
import dalvik.annotation.TestLevel;
import dalvik.annotation.TestTargetClass;
import dalvik.annotation.TestTargetNew;
@TestTargetClass(PipedWriter.class)
public class PipedWriterTest extends junit.framework.TestCase {
static final String testString = "Lorem ipsum...";
static final int testLength = testString.length();
static class PReader implements Runnable {
public PipedReader pr;
public char[] buf;
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());
}
} */
public void run() {
try {
while (true) {
Thread.sleep(1000);
Thread.yield();
}
} catch (InterruptedException e) {
}
}
public String read(int nbytes) {
buf = new char[nbytes];
try {
pr.read(buf, 0, nbytes);
return new String(buf);
} catch (IOException e) {
System.out.println("Exception reading ("
+ Thread.currentThread().getName() + "): "
+ e.toString());
return "ERROR";
}
}
}
Thread readerThread;
PReader reader;
PipedWriter pw;
char[] testBuf;
/**
* @tests java.io.PipedWriter#PipedWriter()
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "PipedWriter",
args = {}
)
public void test_Constructor() {
pw = new PipedWriter();
assertNotNull(pw);
try {
pw.close();
} catch (IOException e) {
fail("Unexpeceted IOException.");
}
}
/**
* @tests java.io.PipedWriter#PipedWriter(java.io.PipedReader)
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "PipedWriter",
args = {java.io.PipedReader.class}
)
public void test_ConstructorLjava_io_PipedReader() throws Exception {
PipedReader rd = new PipedReader();
try {
pw = new PipedWriter(rd);
} catch (Exception e) {
fail("Test 1: Construtor failed:" + e.getMessage());
}
readerThread = new Thread(reader = new PReader(rd), "Constructor(Reader)");
readerThread.start();
try {
pw.write(testBuf);
} catch (Exception e) {
fail("Test 2: Could not write to the constructed writer: "
+ e.getMessage());
}
pw.close();
assertEquals("Test 3: Incorrect character string received.", testString,
reader.read(testLength));
rd = new PipedReader(new PipedWriter());
try {
pw = new PipedWriter(rd);
fail("Test 4: IOException expected because the reader is already connected.");
} catch (IOException e) {
// Expected.
}
}
/**
* @tests java.io.PipedWriter#close()
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "close",
args = {}
)
public void test_close() throws Exception {
PipedReader rd = new PipedReader();
pw = new PipedWriter(rd);
reader = new PReader(rd);
try {
pw.close();
} catch (IOException e) {
fail("Test 1: Unexpected IOException: " + e.getMessage());
}
}
/**
* @tests java.io.PipedWriter#connect(java.io.PipedReader)
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "connect",
args = {java.io.PipedReader.class}
)
public void test_connectLjava_io_PipedReader() throws Exception {
PipedReader rd = new PipedReader();
pw = new PipedWriter();
try {
pw.connect(rd);
} catch (Exception e) {
fail("Test 1: Unexpected exception when connecting: " +
e.getLocalizedMessage());
}
readerThread = new Thread(reader = new PReader(rd), "connect");
readerThread.start();
try {
pw.write(testBuf);
} catch (IOException e) {
fail("Test 2: Unexpected IOException when writing after connecting.");
}
assertEquals("Test 3: Incorrect character string received.", testString,
reader.read(testLength));
try {
pw.connect(new PipedReader());
fail("Test 4: IOException expected when reconnecting the writer.");
} catch (IOException e) {
// Expected.
}
}
/**
* @tests java.io.PipedWriter#flush()
*/
@TestTargetNew(
level = TestLevel.SUFFICIENT,
notes = "No IOException checking because it is never thrown in the source code.",
method = "flush",
args = {}
)
public void test_flush() throws Exception {
// Test for method void java.io.PipedWriter.flush()
pw = new PipedWriter();
readerThread = new Thread(reader = new PReader(pw), "flush");
readerThread.start();
pw.write(testBuf);
pw.flush();
assertEquals("Test 1: Flush failed. ", testString,
reader.read(testLength));
}
/**
* @tests java.io.PipedWriter#write(char[], int, int)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "",
method = "write",
args = {char[].class, int.class, int.class}
)
public void test_write$CII() throws Exception {
pw = new PipedWriter();
try {
pw.write(testBuf, 0, 5);
fail("Test 1: IOException expected.");
} catch (IOException e) {
// Expected.
}
pw = new PipedWriter(new PipedReader());
try {
pw.write(testBuf, -1, 1);
fail("Test 2: IndexOutOfBoundsException expected.");
} catch (IndexOutOfBoundsException e) {
// Expected.
}
try {
pw.write(testBuf, 0, -1);
fail("Test 3: IndexOutOfBoundsException expected.");
} catch (IndexOutOfBoundsException e) {
// Expected.
}
try {
pw.write(testBuf, 5, testString.length());
fail("Test 4: IndexOutOfBoundsException expected.");
} catch (IndexOutOfBoundsException e) {
// Expected.
}
pw.close();
pw = new PipedWriter();
try {
readerThread = new Thread(reader = new PReader(pw), "writeCII");
readerThread.start();
pw.write(testBuf, 0, testLength);
pw.close();
reader.read(testLength);
assertTrue("Test 5: Characters read do not match the characters written.",
Arrays.equals( testBuf, reader.buf));
} catch (IOException e) {
fail("Test 5: Unexpected IOException: " + e.getMessage());
}
readerThread.interrupt();
try {
pw.write(testBuf, 0, 5);
fail("Test 6: IOException expected.");
} catch (IOException e) {
// Expected.
}
reader.pr.close();
try {
pw.write(testBuf, 0, 5);
fail("Test 7: IOException expected.");
} catch (IOException e) {
// Expected.
}
}
/**
* @tests java.io.PipedWriter#write(char[],int,int)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "",
method = "write",
args = {char[].class, int.class, int.class}
)
public void test_write$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
Thread.sleep(100);
}
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
} catch (InterruptedException 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)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "",
method = "write",
args = {int.class}
)
public void test_writeI() throws Exception {
// Test for method void java.io.PipedWriter.write(int)
pw = new PipedWriter();
try {
pw.write(42);
fail("Test 1: IOException expected.");
} catch (IOException e) {
// Expected.
}
readerThread = new Thread(reader = new PReader(pw), "writeI");
readerThread.start();
pw.write(1);
pw.write(2);
pw.write(3);
pw.close();
reader.read(3);
assertTrue("Test 2: The charaacters read do not match the characters written: " +
(int) reader.buf[0] + " " + (int) reader.buf[1] + " " + (int) reader.buf[2],
reader.buf[0] == 1 && reader.buf[1] == 2 && reader.buf[2] == 3);
}
/**
* @tests java.io.PipedWriter#write(int)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "",
method = "write",
args = {int.class}
)
public void test_writeI_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
Thread.sleep(100);
}
try {
// should throw exception since reader thread
// is now dead
pw.write(1);
} catch (IOException e) {
pass = true;
}
} catch (IOException e) {
//ignore
} catch (InterruptedException 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);
}
protected void setUp() throws Exception {
super.setUp();
testBuf = new char[testLength];
testString.getChars(0, testLength, testBuf, 0);
}
protected void tearDown() throws Exception {
try {
if (readerThread != null) {
readerThread.interrupt();
}
} catch (Exception ignore) {}
try {
if (pw != null) {
pw.close();
}
} catch (Exception ignore) {}
super.tearDown();
}
}
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