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/* -*- Mode: C++; tab-width: 8; 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 "mozilla/ArrayUtils.h"
#include <stdio.h>
#include <stdlib.h>
#include "nsString.h"
#include "nsStringBuffer.h"
#include "nsReadableUtils.h"
#include "UTFStrings.h"
#include "nsUnicharUtils.h"
#include "mozilla/HashFunctions.h"
#include "gtest/gtest.h"
using namespace mozilla;
namespace TestUTF {
TEST(UTF, Valid)
{
for (unsigned int i = 0; i < ArrayLength(ValidStrings); ++i) {
nsDependentCString str8(ValidStrings[i].m8);
nsDependentString str16(ValidStrings[i].m16);
EXPECT_TRUE(NS_ConvertUTF16toUTF8(str16).Equals(str8));
EXPECT_TRUE(NS_ConvertUTF8toUTF16(str8).Equals(str16));
nsCString tmp8("string ");
AppendUTF16toUTF8(str16, tmp8);
EXPECT_TRUE(tmp8.Equals(NS_LITERAL_CSTRING("string ") + str8));
nsString tmp16(NS_LITERAL_STRING("string "));
AppendUTF8toUTF16(str8, tmp16);
EXPECT_TRUE(tmp16.Equals(NS_LITERAL_STRING("string ") + str16));
EXPECT_EQ(CompareUTF8toUTF16(str8, str16), 0);
}
}
TEST(UTF, Invalid16)
{
for (unsigned int i = 0; i < ArrayLength(Invalid16Strings); ++i) {
nsDependentString str16(Invalid16Strings[i].m16);
nsDependentCString str8(Invalid16Strings[i].m8);
EXPECT_TRUE(NS_ConvertUTF16toUTF8(str16).Equals(str8));
nsCString tmp8("string ");
AppendUTF16toUTF8(str16, tmp8);
EXPECT_TRUE(tmp8.Equals(NS_LITERAL_CSTRING("string ") + str8));
EXPECT_EQ(CompareUTF8toUTF16(str8, str16), 0);
}
}
TEST(UTF, Invalid8)
{
for (unsigned int i = 0; i < ArrayLength(Invalid8Strings); ++i) {
nsDependentString str16(Invalid8Strings[i].m16);
nsDependentCString str8(Invalid8Strings[i].m8);
EXPECT_TRUE(NS_ConvertUTF8toUTF16(str8).Equals(str16));
nsString tmp16(NS_LITERAL_STRING("string "));
AppendUTF8toUTF16(str8, tmp16);
EXPECT_TRUE(tmp16.Equals(NS_LITERAL_STRING("string ") + str16));
EXPECT_EQ(CompareUTF8toUTF16(str8, str16), 0);
}
}
TEST(UTF, Malformed8)
{
// Don't run this test in debug builds as that intentionally asserts.
#ifndef DEBUG
for (unsigned int i = 0; i < ArrayLength(Malformed8Strings); ++i) {
nsDependentCString str8(Malformed8Strings[i]);
EXPECT_TRUE(NS_ConvertUTF8toUTF16(str8).IsEmpty());
nsString tmp16(NS_LITERAL_STRING("string"));
AppendUTF8toUTF16(str8, tmp16);
EXPECT_TRUE(tmp16.EqualsLiteral("string"));
EXPECT_NE(CompareUTF8toUTF16(str8, EmptyString()), 0);
}
#endif
}
TEST(UTF, Hash16)
{
for (unsigned int i = 0; i < ArrayLength(ValidStrings); ++i) {
nsDependentCString str8(ValidStrings[i].m8);
bool err;
EXPECT_EQ(HashString(ValidStrings[i].m16),
HashUTF8AsUTF16(str8.get(), str8.Length(), &err));
EXPECT_FALSE(err);
}
for (unsigned int i = 0; i < ArrayLength(Invalid8Strings); ++i) {
nsDependentCString str8(Invalid8Strings[i].m8);
bool err;
EXPECT_EQ(HashString(Invalid8Strings[i].m16),
HashUTF8AsUTF16(str8.get(), str8.Length(), &err));
EXPECT_FALSE(err);
}
// Don't run this test in debug builds as that intentionally asserts.
#ifndef DEBUG
for (unsigned int i = 0; i < ArrayLength(Malformed8Strings); ++i) {
nsDependentCString str8(Malformed8Strings[i]);
bool err;
EXPECT_EQ(HashUTF8AsUTF16(str8.get(), str8.Length(), &err), 0u);
EXPECT_TRUE(err);
}
#endif
}
/**
* This tests the handling of a non-ascii character at various locations in a
* UTF-16 string that is being converted to UTF-8.
*/
void NonASCII16_helper(const size_t aStrSize)
{
const size_t kTestSize = aStrSize;
const size_t kMaxASCII = 0x80;
const char16_t kUTF16Char = 0xC9;
const char kUTF8Surrogates[] = { char(0xC3), char(0x89) };
// Generate a string containing only ASCII characters.
nsString asciiString;
asciiString.SetLength(kTestSize);
nsCString asciiCString;
asciiCString.SetLength(kTestSize);
auto str_buff = asciiString.BeginWriting();
auto cstr_buff = asciiCString.BeginWriting();
for (size_t i = 0; i < kTestSize; i++) {
str_buff[i] = i % kMaxASCII;
cstr_buff[i] = i % kMaxASCII;
}
// Now go through and test conversion when exactly one character will
// result in a multibyte sequence.
for (size_t i = 0; i < kTestSize; i++) {
// Setup the UTF-16 string.
nsString unicodeString(asciiString);
auto buff = unicodeString.BeginWriting();
buff[i] = kUTF16Char;
// Do the conversion, make sure the length increased by 1.
nsCString dest;
AppendUTF16toUTF8(unicodeString, dest);
EXPECT_EQ(dest.Length(), unicodeString.Length() + 1);
// Build up the expected UTF-8 string.
nsCString expected;
// First add the leading ASCII chars.
expected.Append(asciiCString.BeginReading(), i);
// Now append the UTF-8 surrogate pair we expect the UTF-16 unicode char to
// be converted to.
for (auto& c : kUTF8Surrogates) {
expected.Append(c);
}
// And finish with the trailing ASCII chars.
expected.Append(asciiCString.BeginReading() + i + 1, kTestSize - i - 1);
EXPECT_STREQ(dest.BeginReading(), expected.BeginReading());
}
}
TEST(UTF, NonASCII16)
{
// Test with various string sizes to catch any special casing.
NonASCII16_helper(1);
NonASCII16_helper(8);
NonASCII16_helper(16);
NonASCII16_helper(32);
NonASCII16_helper(512);
}
} // namespace TestUTF
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