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/*
* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
@bug 4403848 6348426 6407730
@summary Check correctness of the UTF-16 converter in all its flavors
*/
import java.io.IOException;
import java.nio.BufferOverflowException;
import java.nio.*;
import java.nio.charset.*;
public class TestUTF_16 {
private static void testDecode(String charset,
String expected,
byte[] input)
throws Exception
{
String out = new String(input, charset);
if (!out.equals(expected)) {
failureReport (out, expected);
throw new Exception("UTF_16 Decoding test failed " + charset);
}
}
private static void testEncode(String charset,
String input,
byte[] expected)
throws Exception
{
byte[] testBytes = input.getBytes(charset);
for (int i = 0; i< expected.length; i++)
if (testBytes[i] != expected[i])
throw new Exception("UTF_16 Encoding test failed " + charset);
}
private static void warn(String s) {
System.err.println("FAILED Test 4403848 UTF-16" +
s) ;
}
private static void failureReport(String testStr,
String expected) {
System.err.println ("Expected Characters:");
for (int i = 0; i < expected.length() ; i++) {
warn("expected char[" + i + "] : " +
Integer.toHexString((int)expected.charAt(i)) +
"obtained char[" + i + "] : " +
Integer.toHexString((int)testStr.charAt(i)));
}
}
/*
private static void checkResult(char[] expected,
String testStr,
String testName)
throws Exception
{
if (testStr.length() != expected.length)
failureReport(testStr, expected);
for (int i = 0; i < testStr.length(); i++) {
if (testStr.charAt(i) != expected[i]) {
failureReport(testStr, expected);
throw new Exception ("REGTEST TestUTF16 failed: "
+ testName);
}
}
System.err.println ("Test " + testName + " PASSED");
return;
}
*/
private static void test() throws Exception {
// Tests: Check decoding of UTF-16.
// Ensures correct endian polarity
// of the decoders and appropriate
// interpretation of BOM bytes where
// they are required.
// Test 1: BigEndian UTF-16 Decoding
testDecode("UTF_16BE", "\u0092\u0093",
new byte[] { (byte) 0x00, (byte) 0x92,
(byte) 0x00, (byte) 0x93 });
// Test 1a: BigEndian UTF-16 Decoding. BOM bytes provided.
testDecode("UTF_16BE", "\ufeff\u0092\u0093",
new byte[] { (byte) 0xfe, (byte) 0xff,
(byte) 0x00, (byte) 0x92,
(byte) 0x00, (byte) 0x93 });
testDecode("UTF_16LE", "\u9200\u9300",
new byte[] { (byte) 0x00, (byte) 0x92,
(byte) 0x00, (byte) 0x93 });
// Test 2a: LittleEndian UTF-16 Decoding, BOM bytes provided.
testDecode("UTF_16LE", "\ufeff\u9200\u9300",
new byte[] { (byte) 0xff, (byte) 0xfe,
(byte) 0x00, (byte) 0x92,
(byte) 0x00, (byte) 0x93 });
// Test 3: UTF-16 (with mandatory byte order mark) Decoding
testDecode("UTF-16", "\u9200\u9300",
new byte[] { (byte) 0xfe, (byte) 0xff,
(byte) 0x92, (byte) 0x00,
(byte) 0x93, (byte) 0x00 });
// Test 3a: UTF-16 BOM omitted. This should decode OK.
testDecode("UTF-16", "\u9200\u9300",
new byte[] { (byte) 0x92, (byte) 0x00,
(byte) 0x93, (byte) 0x00 });
// Test 4: encoding using UTF-16
// BOM must be emitted when encoding and must be BigEndian.
testEncode("UTF-16", "\u0123",
new byte[] { (byte) 0xfe, (byte) 0xff,
(byte) 0x01, (byte) 0x23 });
// Test 5:
if (CoderResult.OVERFLOW !=
Charset.forName("UTF_16")
.newDecoder()
.decode((ByteBuffer.allocate(4)
.put(new byte[]
{(byte)0xd8,(byte)0x00,
(byte)0xdc,(byte)0x01})
.flip()),
CharBuffer.allocate(1),
true)) {
throw new Exception ("REGTEST TestUTF16 Overflow test failed");
}
// Test 6: decoding using UTF_16LE_BOM/UnicodeLittle
// UnicodeLittle should accept non-BOM byte sequence
testDecode("UnicodeLittle", "Arial",
new byte[] { 'A', 0, 'r', 0, 'i', 0, 'a', 0, 'l', 0});
System.err.println ("\nPASSED UTF-16 encoder test");
// Reversed BOM in middle of stream Negative test.
/*
boolean caughtException = false;
try {
String out = new String(new byte[] {(byte)0x00,
(byte)0x92,
(byte)0xff,
(byte)0xfe},
"UTF-16");
} catch (IOException e) { caughtException = true; }
if (caughtException == false)
throw new Exception ("Incorrectly parsed BOM in middle of input");
*/
// Fixed included with bug 4403848 fixes buffer sizing
// issue due to non provision of additional 2 bytes
// headroom for initial BOM bytes for UTF-16 encoding.
System.err.println ("OVERALL PASS OF UTF-16 Test");
}
public static void main (String[] args) throws Exception {
test();
}
}
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