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// Tencent is pleased to support the open source community by making RapidJSON available.
//
// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
//
// Licensed under the MIT License (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
//
// http://opensource.org/licenses/MIT
//
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
#include "unittest.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/writer.h"
#ifdef __clang__
RAPIDJSON_DIAG_PUSH
RAPIDJSON_DIAG_OFF(c++98-compat)
#endif
using namespace rapidjson;
TEST(StringBuffer, InitialSize) {
StringBuffer buffer;
EXPECT_EQ(0u, buffer.GetSize());
EXPECT_EQ(0u, buffer.GetLength());
EXPECT_STREQ("", buffer.GetString());
}
TEST(StringBuffer, Put) {
StringBuffer buffer;
buffer.Put('A');
EXPECT_EQ(1u, buffer.GetSize());
EXPECT_EQ(1u, buffer.GetLength());
EXPECT_STREQ("A", buffer.GetString());
}
TEST(StringBuffer, PutN_Issue672) {
GenericStringBuffer<UTF8<>, MemoryPoolAllocator<> > buffer;
EXPECT_EQ(0, buffer.GetSize());
EXPECT_EQ(0, buffer.GetLength());
rapidjson::PutN(buffer, ' ', 1);
EXPECT_EQ(1, buffer.GetSize());
EXPECT_EQ(1, buffer.GetLength());
}
TEST(StringBuffer, Clear) {
StringBuffer buffer;
buffer.Put('A');
buffer.Put('B');
buffer.Put('C');
buffer.Clear();
EXPECT_EQ(0u, buffer.GetSize());
EXPECT_EQ(0u, buffer.GetLength());
EXPECT_STREQ("", buffer.GetString());
}
TEST(StringBuffer, Push) {
StringBuffer buffer;
buffer.Push(5);
EXPECT_EQ(5u, buffer.GetSize());
EXPECT_EQ(5u, buffer.GetLength());
// Causes sudden expansion to make the stack's capacity equal to size
buffer.Push(65536u);
EXPECT_EQ(5u + 65536u, buffer.GetSize());
}
TEST(StringBuffer, Pop) {
StringBuffer buffer;
buffer.Put('A');
buffer.Put('B');
buffer.Put('C');
buffer.Put('D');
buffer.Put('E');
buffer.Pop(3);
EXPECT_EQ(2u, buffer.GetSize());
EXPECT_EQ(2u, buffer.GetLength());
EXPECT_STREQ("AB", buffer.GetString());
}
TEST(StringBuffer, GetLength_Issue744) {
GenericStringBuffer<UTF16<wchar_t> > buffer;
buffer.Put('A');
buffer.Put('B');
buffer.Put('C');
EXPECT_EQ(3u * sizeof(wchar_t), buffer.GetSize());
EXPECT_EQ(3u, buffer.GetLength());
}
#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
#if 0 // Many old compiler does not support these. Turn it off temporaily.
#include <type_traits>
TEST(StringBuffer, Traits) {
static_assert( std::is_constructible<StringBuffer>::value, "");
static_assert( std::is_default_constructible<StringBuffer>::value, "");
#ifndef _MSC_VER
static_assert(!std::is_copy_constructible<StringBuffer>::value, "");
#endif
static_assert( std::is_move_constructible<StringBuffer>::value, "");
static_assert(!std::is_nothrow_constructible<StringBuffer>::value, "");
static_assert(!std::is_nothrow_default_constructible<StringBuffer>::value, "");
#if !defined(_MSC_VER) || _MSC_VER >= 1800
static_assert(!std::is_nothrow_copy_constructible<StringBuffer>::value, "");
static_assert(!std::is_nothrow_move_constructible<StringBuffer>::value, "");
#endif
static_assert( std::is_assignable<StringBuffer,StringBuffer>::value, "");
#ifndef _MSC_VER
static_assert(!std::is_copy_assignable<StringBuffer>::value, "");
#endif
static_assert( std::is_move_assignable<StringBuffer>::value, "");
#if !defined(_MSC_VER) || _MSC_VER >= 1800
static_assert(!std::is_nothrow_assignable<StringBuffer, StringBuffer>::value, "");
#endif
static_assert(!std::is_nothrow_copy_assignable<StringBuffer>::value, "");
static_assert(!std::is_nothrow_move_assignable<StringBuffer>::value, "");
static_assert( std::is_destructible<StringBuffer>::value, "");
#ifndef _MSC_VER
static_assert(std::is_nothrow_destructible<StringBuffer>::value, "");
#endif
}
#endif
TEST(StringBuffer, MoveConstructor) {
StringBuffer x;
x.Put('A');
x.Put('B');
x.Put('C');
x.Put('D');
EXPECT_EQ(4u, x.GetSize());
EXPECT_EQ(4u, x.GetLength());
EXPECT_STREQ("ABCD", x.GetString());
// StringBuffer y(x); // does not compile (!is_copy_constructible)
StringBuffer y(std::move(x));
EXPECT_EQ(0u, x.GetSize());
EXPECT_EQ(0u, x.GetLength());
EXPECT_EQ(4u, y.GetSize());
EXPECT_EQ(4u, y.GetLength());
EXPECT_STREQ("ABCD", y.GetString());
// StringBuffer z = y; // does not compile (!is_copy_assignable)
StringBuffer z = std::move(y);
EXPECT_EQ(0u, y.GetSize());
EXPECT_EQ(0u, y.GetLength());
EXPECT_EQ(4u, z.GetSize());
EXPECT_EQ(4u, z.GetLength());
EXPECT_STREQ("ABCD", z.GetString());
}
TEST(StringBuffer, MoveAssignment) {
StringBuffer x;
x.Put('A');
x.Put('B');
x.Put('C');
x.Put('D');
EXPECT_EQ(4u, x.GetSize());
EXPECT_EQ(4u, x.GetLength());
EXPECT_STREQ("ABCD", x.GetString());
StringBuffer y;
// y = x; // does not compile (!is_copy_assignable)
y = std::move(x);
EXPECT_EQ(0u, x.GetSize());
EXPECT_EQ(4u, y.GetLength());
EXPECT_STREQ("ABCD", y.GetString());
}
#endif // RAPIDJSON_HAS_CXX11_RVALUE_REFS
#ifdef __clang__
RAPIDJSON_DIAG_POP
#endif