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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 <stdlib.h>
#include "nsString.h"
#include "gtest/gtest.h"
TEST(Encoding, GoodSurrogatePair)
{
// 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);
EXPECT_TRUE(!!goodPair8);
EXPECT_EQ(byteCount, 6u);
const unsigned char expected8[] =
{ 0xF0, 0x90, 0x8C, 0x82, 0x65, 0x78, 0x0 };
EXPECT_EQ(0, memcmp(expected8, goodPair8, sizeof(expected8)));
// 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);
EXPECT_EQ(0, CompareUTF8toUTF16(expected, goodPair16));
free(goodPair8);
}
TEST(Encoding, BackwardsSurrogatePair)
{
// 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);
EXPECT_TRUE(!!backwardsPair8);
EXPECT_EQ(byteCount, 8u);
const unsigned char expected8[] =
{ 0xEF, 0xBF, 0xBD, 0xEF, 0xBF, 0xBD, 0x65, 0x78, 0x0 };
EXPECT_EQ(0, memcmp(expected8, backwardsPair8, sizeof(expected8)));
// 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);
EXPECT_EQ(0, CompareUTF8toUTF16(expected, backwardsPair16));
free(backwardsPair8);
}
TEST(Encoding, MalformedUTF16OrphanHighSurrogate)
{
// 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);
EXPECT_TRUE(!!highSurrogate8);
EXPECT_EQ(byteCount, 7u);
const unsigned char expected8[] =
{ 0xEF, 0xBF, 0xBD, 0x74, 0x65, 0x78, 0x74, 0x0 };
EXPECT_EQ(0, memcmp(expected8, highSurrogate8, sizeof(expected8)));
// 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);
EXPECT_EQ(0, CompareUTF8toUTF16(expected, highSurrogate16));
free(highSurrogate8);
}
TEST(Encoding, MalformedUTF16OrphanLowSurrogate)
{
// 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);
EXPECT_TRUE(!!lowSurrogate8);
EXPECT_EQ(byteCount, 7u);
const unsigned char expected8[] =
{ 0xEF, 0xBF, 0xBD, 0x74, 0x65, 0x78, 0x74, 0x0 };
EXPECT_EQ(0, memcmp(expected8, lowSurrogate8, sizeof(expected8)));
// 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);
EXPECT_EQ(0, CompareUTF8toUTF16(expected, lowSurrogate16));
free(lowSurrogate8);
}
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