gecko-dev/xpcom/tests/TestEncoding.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Jeff Walden <jwalden+code@mit.edu>.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "TestHarness.h"
nsresult TestGoodSurrogatePair()
{
// When this string is decoded, the surrogate pair is U+10302 and the rest of
// the string is specified by indexes 2 onward.
const PRUnichar goodPairData[] = { 0xD800, 0xDF02, 0x65, 0x78, 0x0 };
nsDependentString goodPair16(goodPairData);
PRUint32 byteCount = 0;
char* goodPair8 = ToNewUTF8String(goodPair16, &byteCount);
if (!goodPair8)
{
fail("out of memory creating goodPair8");
return NS_ERROR_OUT_OF_MEMORY;
}
if (byteCount != 6)
{
fail("wrong number of bytes; expected 6, got %lu", byteCount);
return NS_ERROR_FAILURE;
}
const char expected8[] = { 0xF0, 0x90, 0x8C, 0x82, 0x65, 0x78, 0x0 };
if (0 != memcmp(expected8, goodPair8, sizeof(expected8)))
{
fail("wrong translation to UTF8");
return NS_ERROR_FAILURE;
}
// This takes a different code path from the above, so test it to make sure
// the UTF-16 enumeration remains in sync with the UTF-8 enumeration.
nsDependentCString expected(expected8);
if (0 != CompareUTF8toUTF16(expected, goodPair16))
{
fail("bad comparison between UTF-8 and equivalent UTF-16");
return NS_ERROR_FAILURE;
}
NS_Free(goodPair8);
passed("TestGoodSurrogatePair");
return NS_OK;
}
nsresult TestBackwardsSurrogatePair()
{
// When this string is decoded, the two surrogates are wrongly ordered and
// must each be interpreted as U+FFFD.
const PRUnichar backwardsPairData[] = { 0xDDDD, 0xD863, 0x65, 0x78, 0x0 };
nsDependentString backwardsPair16(backwardsPairData);
PRUint32 byteCount = 0;
char* backwardsPair8 = ToNewUTF8String(backwardsPair16, &byteCount);
if (!backwardsPair8)
{
fail("out of memory creating backwardsPair8");
return NS_ERROR_OUT_OF_MEMORY;
}
if (byteCount != 8)
{
fail("wrong number of bytes; expected 8, got %lu", byteCount);
return NS_ERROR_FAILURE;
}
const char expected8[] =
{ 0xEF, 0xBF, 0xBD, 0xEF, 0xBF, 0xBD, 0x65, 0x78, 0x0 };
if (0 != memcmp(expected8, backwardsPair8, sizeof(expected8)))
{
fail("wrong translation to UTF8");
return NS_ERROR_FAILURE;
}
// This takes a different code path from the above, so test it to make sure
// the UTF-16 enumeration remains in sync with the UTF-8 enumeration.
nsDependentCString expected(expected8);
if (0 != CompareUTF8toUTF16(expected, backwardsPair16))
{
fail("bad comparison between UTF-8 and malformed but equivalent UTF-16");
return NS_ERROR_FAILURE;
}
NS_Free(backwardsPair8);
passed("TestBackwardsSurrogatePair");
return NS_OK;
}
nsresult TestMalformedUTF16OrphanHighSurrogate()
{
// When this string is decoded, the high surrogate should be replaced and the
// rest of the string is specified by indexes 1 onward.
const PRUnichar highSurrogateData[] = { 0xD863, 0x74, 0x65, 0x78, 0x74, 0x0 };
nsDependentString highSurrogate16(highSurrogateData);
PRUint32 byteCount = 0;
char* highSurrogate8 = ToNewUTF8String(highSurrogate16, &byteCount);
if (!highSurrogate8)
{
fail("out of memory creating highSurrogate8");
return NS_ERROR_OUT_OF_MEMORY;
}
if (byteCount != 7)
{
fail("wrong number of bytes; expected 7, got %lu", byteCount);
return NS_ERROR_FAILURE;
}
const char expected8[] = { 0xEF, 0xBF, 0xBD, 0x74, 0x65, 0x78, 0x74, 0x0 };
if (0 != memcmp(expected8, highSurrogate8, sizeof(expected8)))
{
fail("wrong translation to UTF8");
return NS_ERROR_FAILURE;
}
// This takes a different code path from the above, so test it to make sure
// the UTF-16 enumeration remains in sync with the UTF-8 enumeration.
nsDependentCString expected(expected8);
if (0 != CompareUTF8toUTF16(expected, highSurrogate16))
{
fail("bad comparison between UTF-8 and malformed but equivalent UTF-16");
return NS_ERROR_FAILURE;
}
NS_Free(highSurrogate8);
passed("TestMalformedUTF16OrphanHighSurrogate");
return NS_OK;
}
nsresult TestMalformedUTF16OrphanLowSurrogate()
{
// When this string is decoded, the low surrogate should be replaced and the
// rest of the string is specified by indexes 1 onward.
const PRUnichar lowSurrogateData[] = { 0xDDDD, 0x74, 0x65, 0x78, 0x74, 0x0 };
nsDependentString lowSurrogate16(lowSurrogateData);
PRUint32 byteCount = 0;
char* lowSurrogate8 = ToNewUTF8String(lowSurrogate16, &byteCount);
if (!lowSurrogate8)
{
fail("out of memory creating lowSurrogate8");
return NS_ERROR_OUT_OF_MEMORY;
}
if (byteCount != 7)
{
fail("wrong number of bytes; expected 7, got %lu", byteCount);
return NS_ERROR_FAILURE;
}
const char expected8[] = { 0xEF, 0xBF, 0xBD, 0x74, 0x65, 0x78, 0x74, 0x0 };
if (0 != memcmp(expected8, lowSurrogate8, sizeof(expected8)))
{
fail("wrong translation to UTF8");
return NS_ERROR_FAILURE;
}
// This takes a different code path from the above, so test it to make sure
// the UTF-16 enumeration remains in sync with the UTF-8 enumeration.
nsDependentCString expected(expected8);
if (0 != CompareUTF8toUTF16(expected, lowSurrogate16))
{
fail("bad comparison between UTF-8 and malformed but equivalent UTF-16");
return NS_ERROR_FAILURE;
}
NS_Free(lowSurrogate8);
passed("TestMalformedUTF16OrphanLowSurrogate");
return NS_OK;
}
int main(int argc, char** argv)
{
ScopedXPCOM xpcom("TestEncoding");
if (xpcom.failed())
return 1;
int rv = 0;
if (NS_FAILED(TestGoodSurrogatePair()))
rv = 1;
if (NS_FAILED(TestBackwardsSurrogatePair()))
rv = 1;
if (NS_FAILED(TestMalformedUTF16OrphanHighSurrogate()))
rv = 1;
if (NS_FAILED(TestMalformedUTF16OrphanLowSurrogate()))
rv = 1;
return rv;
}