зеркало из https://github.com/mozilla/gecko-dev.git
110 строки
4.0 KiB
C++
110 строки
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <stdlib.h>
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#include "nsString.h"
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#include "gtest/gtest.h"
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TEST(Encoding, GoodSurrogatePair)
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{
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// When this string is decoded, the surrogate pair is U+10302 and the rest of
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// the string is specified by indexes 2 onward.
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const char16_t goodPairData[] = { 0xD800, 0xDF02, 0x65, 0x78, 0x0 };
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nsDependentString goodPair16(goodPairData);
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uint32_t byteCount = 0;
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char* goodPair8 = ToNewUTF8String(goodPair16, &byteCount);
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EXPECT_TRUE(!!goodPair8);
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EXPECT_EQ(byteCount, 6u);
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const unsigned char expected8[] =
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{ 0xF0, 0x90, 0x8C, 0x82, 0x65, 0x78, 0x0 };
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EXPECT_EQ(0, memcmp(expected8, goodPair8, sizeof(expected8)));
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// This takes a different code path from the above, so test it to make sure
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// the UTF-16 enumeration remains in sync with the UTF-8 enumeration.
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nsDependentCString expected((const char*)expected8);
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EXPECT_EQ(0, CompareUTF8toUTF16(expected, goodPair16));
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free(goodPair8);
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}
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TEST(Encoding, BackwardsSurrogatePair)
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{
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// When this string is decoded, the two surrogates are wrongly ordered and
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// must each be interpreted as U+FFFD.
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const char16_t backwardsPairData[] = { 0xDDDD, 0xD863, 0x65, 0x78, 0x0 };
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nsDependentString backwardsPair16(backwardsPairData);
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uint32_t byteCount = 0;
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char* backwardsPair8 = ToNewUTF8String(backwardsPair16, &byteCount);
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EXPECT_TRUE(!!backwardsPair8);
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EXPECT_EQ(byteCount, 8u);
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const unsigned char expected8[] =
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{ 0xEF, 0xBF, 0xBD, 0xEF, 0xBF, 0xBD, 0x65, 0x78, 0x0 };
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EXPECT_EQ(0, memcmp(expected8, backwardsPair8, sizeof(expected8)));
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// This takes a different code path from the above, so test it to make sure
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// the UTF-16 enumeration remains in sync with the UTF-8 enumeration.
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nsDependentCString expected((const char*)expected8);
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EXPECT_EQ(0, CompareUTF8toUTF16(expected, backwardsPair16));
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free(backwardsPair8);
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}
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TEST(Encoding, MalformedUTF16OrphanHighSurrogate)
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{
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// When this string is decoded, the high surrogate should be replaced and the
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// rest of the string is specified by indexes 1 onward.
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const char16_t highSurrogateData[] = { 0xD863, 0x74, 0x65, 0x78, 0x74, 0x0 };
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nsDependentString highSurrogate16(highSurrogateData);
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uint32_t byteCount = 0;
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char* highSurrogate8 = ToNewUTF8String(highSurrogate16, &byteCount);
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EXPECT_TRUE(!!highSurrogate8);
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EXPECT_EQ(byteCount, 7u);
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const unsigned char expected8[] =
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{ 0xEF, 0xBF, 0xBD, 0x74, 0x65, 0x78, 0x74, 0x0 };
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EXPECT_EQ(0, memcmp(expected8, highSurrogate8, sizeof(expected8)));
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// This takes a different code path from the above, so test it to make sure
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// the UTF-16 enumeration remains in sync with the UTF-8 enumeration.
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nsDependentCString expected((const char*)expected8);
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EXPECT_EQ(0, CompareUTF8toUTF16(expected, highSurrogate16));
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free(highSurrogate8);
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}
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TEST(Encoding, MalformedUTF16OrphanLowSurrogate)
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{
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// When this string is decoded, the low surrogate should be replaced and the
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// rest of the string is specified by indexes 1 onward.
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const char16_t lowSurrogateData[] = { 0xDDDD, 0x74, 0x65, 0x78, 0x74, 0x0 };
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nsDependentString lowSurrogate16(lowSurrogateData);
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uint32_t byteCount = 0;
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char* lowSurrogate8 = ToNewUTF8String(lowSurrogate16, &byteCount);
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EXPECT_TRUE(!!lowSurrogate8);
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EXPECT_EQ(byteCount, 7u);
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const unsigned char expected8[] =
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{ 0xEF, 0xBF, 0xBD, 0x74, 0x65, 0x78, 0x74, 0x0 };
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EXPECT_EQ(0, memcmp(expected8, lowSurrogate8, sizeof(expected8)));
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// This takes a different code path from the above, so test it to make sure
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// the UTF-16 enumeration remains in sync with the UTF-8 enumeration.
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nsDependentCString expected((const char*)expected8);
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EXPECT_EQ(0, CompareUTF8toUTF16(expected, lowSurrogate16));
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free(lowSurrogate8);
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}
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