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 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 #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 char16_t goodPairData[] = {  0xD800, 0xDF02, 0x65, 0x78, 0x0 };

   nsDependentString goodPair16(goodPairData);

   uint32_t 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 unsigned 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((const char*)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 char16_t backwardsPairData[] = { 0xDDDD, 0xD863, 0x65, 0x78, 0x0 };

   nsDependentString backwardsPair16(backwardsPairData);

   uint32_t 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 unsigned 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((const char*)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 char16_t highSurrogateData[] = { 0xD863, 0x74, 0x65, 0x78, 0x74, 0x0 };

   nsDependentString highSurrogate16(highSurrogateData);

   uint32_t 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 unsigned 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((const char*)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 char16_t lowSurrogateData[] = { 0xDDDD, 0x74, 0x65, 0x78, 0x74, 0x0 };

   nsDependentString lowSurrogate16(lowSurrogateData);

   uint32_t 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 unsigned 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((const char*)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;

 }