/*
* 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.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CodingErrorAction;
import java.nio.charset.MalformedInputException;
import java.util.Arrays;
import junit.framework.TestCase;
/**
*
*/
public class InputStreamReaderTest extends TestCase {
private final String source = "This is a test message with Unicode character. \u4e2d\u56fd is China's name in Chinese";
private InputStream in;
private InputStreamReader reader;
private InputStreamReader is;
private InputStream fis;
public String fileString = "Test_All_Tests\nTest_java_io_BufferedInputStream\nTest_java_io_BufferedOutputStream\nTest_java_io_ByteArrayInputStream\nTest_java_io_ByteArrayOutputStream\nTest_java_io_DataInputStream\n";
static class LimitedByteArrayInputStream extends ByteArrayInputStream {
// A ByteArrayInputStream that only returns a single byte per read
byte[] bytes;
int count;
public LimitedByteArrayInputStream(int type) {
super(new byte[0]);
switch (type) {
case 0:
bytes = new byte[] { 0x61, 0x72 };
break;
case 1:
bytes = new byte[] { (byte) 0xff, (byte) 0xfe, 0x61, 0x72 };
break;
case 2:
bytes = new byte[] { '\u001b', '$', 'B', '6', 'e', 'B', 'h',
'\u001b', '(', 'B' };
break;
}
count = bytes.length;
}
public int read() {
if (count == 0)
return -1;
count--;
return bytes[bytes.length - count];
}
public int read(byte[] buffer, int offset, int length) {
if (count == 0)
return -1;
if (length == 0)
return 0;
buffer[offset] = bytes[bytes.length - count];
count--;
return 1;
}
public int available() {
return count;
}
}
/*
* @see TestCase#setUp()
*/
protected void setUp() throws Exception {
super.setUp();
try {
in = new ByteArrayInputStream(source.getBytes("UTF-8"));
reader = new InputStreamReader(in, "UTF-8");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
OutputStreamWriter osw = new OutputStreamWriter(bos);
char[] buf = new char[fileString.length()];
fileString.getChars(0, fileString.length(), buf, 0);
osw.write(buf);
osw.close();
fis = new ByteArrayInputStream(bos.toByteArray());
is = new InputStreamReader(fis);
} catch (Exception e) {
fail("Exception during setUp : " + e.getMessage());
}
}
/*
* @see TestCase#tearDown()
*/
protected void tearDown() throws Exception {
try {
in.close();
is.close();
fis.close();
} catch (IOException e) {
}
super.tearDown();
}
public void testClose() throws IOException {
reader.close();
try {
reader.ready();
fail("Should throw IOException");
} catch (IOException e) {
}
reader.close();
}
/*
* Class under test for int read()
*/
public void testRead() throws IOException {
assertEquals('T', (char) reader.read());
assertEquals('h', (char) reader.read());
assertEquals('i', (char) reader.read());
assertEquals('s', (char) reader.read());
assertEquals(' ', (char) reader.read());
reader.read(new char[source.length() - 5], 0, source.length() - 5);
assertEquals(-1, reader.read());
}
/*
* Class under test for int read()
* Regression for Harmony-411
*/
public void testRead1() throws IOException {
// if the decoder is constructed by InputStreamReader itself, the decoder's
// default error action is REPLACE
InputStreamReader isr = new InputStreamReader(new ByteArrayInputStream(
new byte[] { -32, -96 }), "UTF-8");
assertEquals("read() return incorrect value", 65533, isr.read());
InputStreamReader isr2 = new InputStreamReader(new ByteArrayInputStream(
new byte[] { -32, -96 }), Charset.forName("UTF-8"));
assertEquals("read() return incorrect value", 65533, isr2.read());
// if the decoder is passed in, keep its status intacted
CharsetDecoder decoder = Charset.forName("UTF-8").newDecoder();
decoder.onMalformedInput(CodingErrorAction.REPORT);
InputStreamReader isr3 = new InputStreamReader(new ByteArrayInputStream(
new byte[] { -32, -96 }), decoder);
try{
isr3.read();
fail("Should throw MalformedInputException");
}catch(MalformedInputException e){
//expected
}
CharsetDecoder decoder2 = Charset.forName("UTF-8").newDecoder();
decoder2.onMalformedInput(CodingErrorAction.IGNORE);
InputStreamReader isr4 = new InputStreamReader(new ByteArrayInputStream(
new byte[] { -32, -96 }), decoder2);
assertEquals("read() return incorrect value", -1, isr4.read());
CharsetDecoder decoder3 = Charset.forName("UTF-8").newDecoder();
decoder3.onMalformedInput(CodingErrorAction.REPLACE);
InputStreamReader isr5 = new InputStreamReader(new ByteArrayInputStream(
new byte[] { -32, -96 }), decoder3);
assertEquals("read() return incorrect value", 65533, isr5.read());
}
/*
* Class under test for int read(char[], int, int)
*/
public void testReadcharArrayintint() throws IOException {
//throws IndexOutOfBoundsException before NullPointerException
try {
reader.read(null, -1, 1);
fail("Should throw IndexOutOfBoundsException");
} catch (IndexOutOfBoundsException e) {
//expected
}
//throws NullPointerException before IndexOutOfBoundsException
try {
reader.read(null, 0, -1);
fail("Should throw NullPointerException");
} catch (NullPointerException e) {
//expected
}
try {
reader.read(null, 0, 1);
fail();
} catch (NullPointerException e) {
}
try {
reader.read(new char[3], -1, 1);
fail();
} catch (IndexOutOfBoundsException e) {
}
try {
reader.read(new char[3], 0, -1);
fail();
} catch (IndexOutOfBoundsException e) {
}
try {
reader.read(new char[3], 1, 3);
fail();
} catch (IndexOutOfBoundsException e) {
}
assertEquals(0, reader.read(new char[3], 3, 0));
char[] chars = new char[source.length()];
assertEquals(0, reader.read(chars, 0, 0));
assertEquals(0, chars[0]);
assertEquals(3, reader.read(chars, 0, 3));
assertEquals(5, reader.read(chars, 3, 5));
assertEquals(source.length() - 8, reader.read(chars, 8,
chars.length - 8));
assertTrue(Arrays.equals(chars, source.toCharArray()));
assertEquals(-1, reader.read(chars, 0, chars.length));
assertTrue(Arrays.equals(chars, source.toCharArray()));
}
public void testReadcharArrayintint2() throws IOException {
char[] chars = new char[source.length()];
assertEquals(source.length() - 3, reader.read(chars, 0,
chars.length - 3));
assertEquals(3, reader.read(chars, 0, 10));
}
public void testReady() throws IOException {
assertTrue(reader.ready());
reader.read(new char[source.length()]);
assertFalse(reader.ready());
}
public void testSpecialCharsetReading() throws IOException {
reader.close();
in = this.getClass().getClassLoader().getResourceAsStream(
"tests/api/java/io/testfile-utf8.txt");
reader = new InputStreamReader(in, "utf-8");
int c;
StringBuffer sb = new StringBuffer();
while ((c = reader.read()) != -1) {
sb.append((char) c);
}
// delete BOM
assertEquals(source, sb.deleteCharAt(0).toString());
sb.setLength(0);
reader.close();
in = this.getClass().getClassLoader().getResourceAsStream(
"tests/api/java/io/testfile.txt");
try {
reader = new InputStreamReader(in, "gb18030");
} catch (UnsupportedEncodingException e) {
System.out
.println("GB18030 is not supported, abort test InputStreamReaderTest.testSpecialCharsetReading().");
}
while ((c = reader.read()) != -1) {
sb.append((char) c);
}
assertEquals(source, sb.toString());
}
public void testAfterClose() throws IOException {
reader.close();
in = new BufferedInputStream(this.getClass().getClassLoader()
.getResourceAsStream("tests/api/java/io/testfile-utf8.txt"));
reader = new InputStreamReader(in, "utf-8");
in.close();
try {
int count = reader.read(new char[1]);
fail("count:" + count);
} catch (IOException e) {
}
try {
reader.read();
fail();
} catch (IOException e) {
}
assertFalse(reader.ready());
Charset cs = Charset.forName("utf-8");
assertEquals(cs, Charset.forName(reader.getEncoding()));
reader.close();
}
/*
* Class under test for void InputStreamReader(InputStream)
*/
public void testInputStreamReaderInputStream() throws IOException {
try {
reader = new InputStreamReader(null);
fail();
} catch (NullPointerException e) {
}
InputStreamReader reader2 = new InputStreamReader(in);
reader2.close();
}
/*
* Class under test for void InputStreamReader(InputStream, String)
*/
public void testInputStreamReaderInputStreamString() throws IOException {
try {
reader = new InputStreamReader(null, "utf-8");
fail();
} catch (NullPointerException e) {
}
try {
reader = new InputStreamReader(in, (String) null);
fail();
} catch (NullPointerException e) {
}
try {
reader = new InputStreamReader(in, "");
fail();
} catch (UnsupportedEncodingException e) {
}
try {
reader = new InputStreamReader(in, "badname");
fail();
} catch (UnsupportedEncodingException e) {
}
InputStreamReader reader2 = new InputStreamReader(in, "utf-8");
assertEquals(Charset.forName(reader2.getEncoding()), Charset
.forName("utf-8"));
reader2.close();
reader2 = new InputStreamReader(in, "utf8");
assertEquals(Charset.forName(reader2.getEncoding()), Charset
.forName("utf-8"));
reader2.close();
}
/*
* Class under test for void InputStreamReader(InputStream, CharsetDecoder)
*/
public void testInputStreamReaderInputStreamCharsetDecoder()
throws Exception {
CharsetDecoder decoder = Charset.forName("utf-8").newDecoder();
try {
reader = new InputStreamReader(null, decoder);
fail();
} catch (NullPointerException e) {
}
try {
reader = new InputStreamReader(in, (CharsetDecoder) null);
fail();
} catch (NullPointerException e) {
}
InputStreamReader reader2 = new InputStreamReader(in, decoder);
assertEquals(Charset.forName(reader2.getEncoding()), decoder.charset());
reader2.close();
}
/*
* Class under test for void InputStreamReader(InputStream, Charset)
*/
public void testInputStreamReaderInputStreamCharset() throws IOException {
Charset cs = Charset.forName("utf-8");
try {
reader = new InputStreamReader(null, cs);
fail();
} catch (NullPointerException e) {
}
try {
reader = new InputStreamReader(in, (Charset) null);
fail();
} catch (NullPointerException e) {
}
InputStreamReader reader2 = new InputStreamReader(in, cs);
assertEquals(Charset.forName(reader2.getEncoding()), cs);
reader2.close();
}
public void testInputStreamReaderSuccessiveReads() throws IOException {
byte[] data = new byte[8192 * 2];
Arrays.fill(data, (byte) 116); // 116 = ISO-8859-1 value for 't'
ByteArrayInputStream bis = new ByteArrayInputStream(data);
InputStreamReader isr = new InputStreamReader(bis, "ISO-8859-1");
// One less than the InputStreamReader.BUFFER_SIZE
char[] buf = new char[8191];
int bytesRead = isr.read(buf, 0, buf.length);
if (bytesRead == -1) {
throw new RuntimeException();
}
bytesRead = isr.read(buf, 0, buf.length);
if (bytesRead == -1) {
throw new RuntimeException();
}
}
/**
* @tests java.io.InputStreamReader#InputStreamReader(java.io.InputStream)
*/
public void test_ConstructorLjava_io_InputStream() {
// Test for method java.io.InputStreamReader(java.io.InputStream)
assertTrue("Used to test other methods", true);
}
/**
* @tests java.io.InputStreamReader#InputStreamReader(java.io.InputStream,
* java.lang.String)
*/
public void test_ConstructorLjava_io_InputStreamLjava_lang_String() {
// Test for method java.io.InputStreamReader(java.io.InputStream,
// java.lang.String)
try {
is = new InputStreamReader(fis, "8859_1");
} catch (UnsupportedEncodingException e) {
fail("Unable to create input stream : " + e.getMessage());
}
try {
is = new InputStreamReader(fis, "Bogus");
} catch (UnsupportedEncodingException e) {
return;
}
fail("Failed to throw Unsupported Encoding exception");
}
/**
* @tests java.io.InputStreamReader#close()
*/
public void test_close() {
// Test for method void java.io.InputStreamReader.close()
try {
is.close();
} catch (IOException e) {
fail("Failed to close reader : " + e.getMessage());
}
try {
is.read();
fail("Should throw IOException");
} catch (IOException e) {
// Exception means read failed due to close
}
}
/**
* @tests java.io.InputStreamReader#getEncoding()
*/
public void test_getEncoding() {
// Test for method java.lang.String
// java.io.InputStreamReader.getEncoding()
try {
is = new InputStreamReader(fis, "8859_1");
} catch (UnsupportedEncodingException e) {
assertEquals("Returned incorrect encoding",
"8859_1", is.getEncoding());
}
}
/**
* @tests java.io.InputStreamReader#read()
*/
public void test_read() throws IOException{
// Test for method int java.io.InputStreamReader.read()
try {
int c = is.read();
assertTrue("returned incorrect char", (char) c == fileString
.charAt(0));
InputStreamReader reader = new InputStreamReader(
new ByteArrayInputStream(new byte[] { (byte) 0xe8,
(byte) 0x9d, (byte) 0xa5 }), "UTF8");
assertTrue("wrong double byte char", reader.read() == '\u8765');
} catch (IOException e) {
fail("Exception during read test : " + e.getMessage());
}
// Regression for HARMONY-166
InputStream in;
InputStreamReader reader;
in = new LimitedByteArrayInputStream(0);
reader = new InputStreamReader(in, "UTF-16BE");
assertEquals("Incorrect byte UTF-16BE", '\u6172', reader.read());
in = new LimitedByteArrayInputStream(0);
reader = new InputStreamReader(in, "UTF-16LE");
assertEquals("Incorrect byte UTF-16BE", '\u7261', reader.read());
in = new LimitedByteArrayInputStream(1);
reader = new InputStreamReader(in, "UTF-16");
assertEquals("Incorrect byte UTF-16BE", '\u7261', reader.read());
/* Temporarily commented out due to lack of ISO2022 support in ICU4J 3.8
in = new LimitedByteArrayInputStream(2);
reader = new InputStreamReader(in, "ISO2022JP");
assertEquals("Incorrect byte ISO2022JP 1", '\u4e5d', reader.read());
assertEquals("Incorrect byte ISO2022JP 2", '\u7b2c', reader.read());*/
}
/**
* @tests java.io.InputStreamReader#read(char[], int, int)
*/
public void test_read$CII() {
// Test for method int java.io.InputStreamReader.read(char [], int, int)
try {
char[] rbuf = new char[100];
char[] sbuf = new char[100];
fileString.getChars(0, 100, sbuf, 0);
is.read(rbuf, 0, 100);
for (int i = 0; i < rbuf.length; i++)
assertTrue("returned incorrect chars", rbuf[i] == sbuf[i]);
} catch (IOException e) {
fail("Exception during read test : " + e.getMessage());
}
}
/**
* @tests java.io.InputStreamReader#ready()
*/
public void test_ready() {
// Test for method boolean java.io.InputStreamReader.ready()
try {
assertTrue("Ready test failed", is.ready());
is.read();
assertTrue("More chars, but not ready", is.ready());
} catch (IOException e) {
fail("Exception during ready test : " + e.getMessage());
}
}
}