/*
* 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 org.apache.harmony.luni.tests.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 {
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;
}
@Override
public int available() {
return count;
}
@Override
public int read() {
if (count == 0) {
return -1;
}
count--;
return bytes[bytes.length - count];
}
@Override
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 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";
private InputStream fis;
private InputStream in;
private InputStreamReader is;
private InputStreamReader reader;
private final String source = "This is a test message with Unicode character. \u4e2d\u56fd is China's name in Chinese";
/*
* @see TestCase#setUp()
*/
@Override
protected void setUp() throws Exception {
super.setUp();
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);
}
/*
* @see TestCase#tearDown()
*/
@Override
protected void tearDown() throws Exception {
try {
in.close();
is.close();
fis.close();
} catch (IOException e) {
// Ignored
}
super.tearDown();
}
/**
* @tests java.io.InputStreamReader#close()
*/
public void test_close() throws IOException {
is.close();
try {
is.read();
fail("Should throw IOException");
} catch (IOException e) {
// Expected
}
reader.close();
try {
reader.ready();
fail("Should throw IOException");
} catch (IOException e) {
// Expected
}
// Should be a no-op
reader.close();
// Tests after reader closed
in = new BufferedInputStream(
this
.getClass()
.getClassLoader()
.getResourceAsStream(
"org/apache/harmony/luni/tests/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) {
// Expected
}
try {
reader.read();
fail();
} catch (IOException e) {
// Expected
}
assertFalse(reader.ready());
Charset cs = Charset.forName("utf-8");
assertEquals(cs, Charset.forName(reader.getEncoding()));
}
/**
* @tests java.io.InputStreamReader#InputStreamReader(java.io.InputStream)
*/
public void test_ConstructorLjava_io_InputStream() throws IOException {
try {
reader = new InputStreamReader(null);
fail();
} catch (NullPointerException e) {
// Expected
}
InputStreamReader reader2 = new InputStreamReader(in);
reader2.close();
}
/**
* @tests java.io.InputStreamReader#InputStreamReader(java.io.InputStream,
* java.lang.String)
*/
public void test_ConstructorLjava_io_InputStreamLjava_lang_String()
throws IOException {
is = new InputStreamReader(fis, "8859_1");
try {
is = new InputStreamReader(fis, "Bogus");
fail("Failed to throw Unsupported Encoding exception");
} catch (UnsupportedEncodingException e) {
// Expected
}
try {
reader = new InputStreamReader(null, "utf-8");
fail();
} catch (NullPointerException e) {
// Expected
}
try {
reader = new InputStreamReader(in, (String) null);
fail();
} catch (NullPointerException e) {
// Expected
}
try {
reader = new InputStreamReader(in, "");
fail();
} catch (UnsupportedEncodingException e) {
// Expected
}
try {
reader = new InputStreamReader(in, "badname");
fail();
} catch (UnsupportedEncodingException e) {
// Expected
}
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();
}
/**
* @tests java.io.InputStreamReader(java.io.InputStream,
* java.nio.charset.Charset)
*/
public void test_ConstructorLjava_io_InputStreamLjava_nio_charset_Charset()
throws IOException {
Charset cs = Charset.forName("utf-8");
try {
reader = new InputStreamReader(null, cs);
fail();
} catch (NullPointerException e) {
// Expected
}
try {
reader = new InputStreamReader(in, (Charset) null);
fail();
} catch (NullPointerException e) {
// Expected
}
InputStreamReader reader2 = new InputStreamReader(in, cs);
assertEquals(Charset.forName(reader2.getEncoding()), cs);
reader2.close();
}
/**
* @tests java.io.InputStreamReader(java.io.InputStream,
* java.nio.charset.CharsetDecoder)
*/
public void test_ConstructorLjava_io_InputStreamLjava_nio_charset_CharsetDecoder()
throws IOException {
CharsetDecoder decoder = Charset.forName("utf-8").newDecoder();
try {
reader = new InputStreamReader(null, decoder);
fail();
} catch (NullPointerException e) {
// Expected
}
try {
reader = new InputStreamReader(in, (CharsetDecoder) null);
fail();
} catch (NullPointerException e) {
// Expected
}
InputStreamReader reader2 = new InputStreamReader(in, decoder);
assertEquals(Charset.forName(reader2.getEncoding()), decoder.charset());
reader2.close();
}
/**
* @tests java.io.InputStreamReader#getEncoding()
*/
public void test_getEncoding() throws IOException {
InputStreamReader isr = new InputStreamReader(fis, "8859_1");
assertEquals("Returned incorrect encoding when setting 8859_1",
"ISO8859_1", isr.getEncoding());
isr = new InputStreamReader(fis, "ISO-8859-1");
assertEquals("Returned incorrect encoding when setting ISO-8859-1",
"ISO8859_1", isr.getEncoding());
byte b[] = new byte[5];
isr = new InputStreamReader(new ByteArrayInputStream(b), "UTF-16BE");
isr.close();
assertNull(isr.getEncoding());
try {
isr = new InputStreamReader(System.in, "UTF-16BE");
} catch (UnsupportedEncodingException e) {
// Ignored
}
assertEquals("UnicodeBigUnmarked", isr.getEncoding());
}
/**
* @tests java.io.InputStreamReader#read()
*/
public void test_read() 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());
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');
// Regression for HARMONY-166
InputStream in;
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());
*/
}
/*
* Class under test for int read() Regression for Harmony-411
*/
public void test_read_1() 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 intact
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());
}
public void test_read_specialCharset() throws IOException {
reader.close();
in = this.getClass().getClassLoader().getResourceAsStream(
"org/apache/harmony/luni/tests/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(
"org/apache/harmony/luni/tests/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());
}
/**
* @tests java.io.InputStreamReader#read(char[], int, int)
*/
public void test_read$CII() throws IOException {
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]);
}
// Test successive reads
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);
assertFalse(-1 == bytesRead);
bytesRead = isr.read(buf, 0, buf.length);
assertFalse(-1 == bytesRead);
bis = new ByteArrayInputStream(source.getBytes("UTF-8"));
isr = new InputStreamReader(in, "UTF-8");
char[] chars = new char[source.length()];
assertEquals(source.length() - 3, isr.read(chars, 0, chars.length - 3));
assertEquals(3, isr.read(chars, 0, 10));
}
/*
* Class under test for int read(char[], int, int)
*/
public void test_read$CII_1() throws IOException {
try {
// Throws IndexOutOfBoundsException before NullPointerException
reader.read(null, -1, 1);
fail("Should throw IndexOutOfBoundsException");
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
// Throws NullPointerException before IndexOutOfBoundsException
reader.read(null, 0, -1);
fail("Should throw NullPointerException");
} catch (NullPointerException e) {
// expected
}
try {
reader.read(null, 0, 1);
fail();
} catch (NullPointerException e) {
// Expected
}
try {
reader.read(new char[3], -1, 1);
fail();
} catch (IndexOutOfBoundsException e) {
// Expected
}
try {
reader.read(new char[3], 0, -1);
fail();
} catch (IndexOutOfBoundsException e) {
// Expected
}
try {
reader.read(new char[3], 1, 3);
fail();
} catch (IndexOutOfBoundsException e) {
// Expected
}
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()));
}
/**
* @tests java.io.InputStreamReader#ready()
*/
public void test_ready() throws IOException {
assertTrue("Ready test failed", is.ready());
is.read();
assertTrue("More chars, but not ready", is.ready());
assertTrue(reader.ready());
reader.read(new char[source.length()]);
assertFalse(reader.ready());
}
}