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// Copyright 2017 The Native Object Protocols Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// 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 <gtest/gtest.h>
#include <iterator>
#include <vector>
#include <nop/serializer.h>
#include <nop/structure.h>
#include <nop/table.h>
#include <nop/utility/constexpr_buffer_writer.h>
#include <nop/value.h>
#include "test_utilities.h"
using nop::ConstexprBufferWriter;
using nop::Encoding;
using nop::EncodingByte;
using nop::Entry;
using nop::Integer;
using nop::Serializer;
namespace {
template <typename T, size_t Size>
struct Array {
T elements[Size];
constexpr T& operator[](size_t index) { return elements[index]; }
constexpr const T& operator[](size_t index) const { return elements[index]; }
constexpr T* data() { return elements; }
constexpr const T* data() const { return elements; }
constexpr size_t size() const { return Size; }
constexpr const T* begin() const { return &elements[0]; }
constexpr const T* end() const { return &elements[Size]; }
constexpr bool operator==(const Array& other) const {
for (size_t i = 0; i < Size; i++) {
if (elements[i] != other.elements[i])
return false;
}
return true;
}
NOP_VALUE(Array, elements);
};
template <typename T>
constexpr size_t EncodingSize(const T& value) {
return nop::Encoding<T>::Size(value);
}
template <std::size_t Size, typename T>
constexpr auto Serialize(const T& value) {
Array<std::uint8_t, Size> bytes{{}};
Serializer<nop::ConstexprBufferWriter> serializer{bytes.data(), bytes.size()};
auto status = serializer.Write(value);
return status ? bytes : throw status;
}
struct BasicStruct {
std::uint8_t a;
std::uint32_t b;
NOP_STRUCTURE(BasicStruct, a, b);
};
constexpr BasicStruct kBasicStruct{127, 0xa5a5a5a5};
constexpr auto SerializeBasicStruct() {
constexpr std::size_t Size = EncodingSize(kBasicStruct);
return Serialize<Size>(kBasicStruct);
}
constexpr auto kSerializedBasicStruct = SerializeBasicStruct();
constexpr Array<BasicStruct, 3> kBasicStructArray{
{
{0, 1},
{2, 3},
{4, 5},
},
};
constexpr auto SerializeBasicStructArray() {
constexpr std::size_t Size = EncodingSize(kBasicStructArray);
return Serialize<Size>(kBasicStructArray);
}
constexpr auto kSerializedBasicStructArray = SerializeBasicStructArray();
struct BasicTable {
Entry<int, 0> a;
Entry<char, 1> b;
Entry<Array<char, 10>, 2> c;
NOP_TABLE(BasicTable, a, b, c);
};
constexpr BasicTable kBasicTable{10, 20, {{{'a', 'b', 'c', 'd', 'e'}}}};
static_assert(Encoding<int>::Size(kBasicTable.a.get()) == 1, "");
static_assert(Encoding<char>::Size(kBasicTable.b.get()) == 1, "");
static_assert(Encoding<Array<char, 10>>::Size(kBasicTable.c.get()) == 12, "");
static_assert(EncodingSize(kBasicTable) == 23, "");
constexpr auto SerializeBasicTable() {
constexpr std::size_t Size = EncodingSize(kBasicTable);
return Serialize<Size>(kBasicTable);
}
constexpr auto kSerializedBasicTable = SerializeBasicTable();
constexpr Array<BasicTable, 4> kBasicTableArray{
{
{10, 20, {{{'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j'}}}},
{128, 128, {{{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'}}}},
{255, 255, {{{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'}}}},
{},
},
};
constexpr auto SerializeBasicTableArray() {
constexpr std::size_t Size = EncodingSize(kBasicTableArray);
return Serialize<Size>(kBasicTableArray);
}
constexpr auto kSerializedBasicTableArray = SerializeBasicTableArray();
} // anonymous namespace
TEST(Constexpr, SerializedData) {
std::vector<std::uint8_t> expected;
std::vector<std::uint8_t> actual;
{
expected = Compose(EncodingByte::Structure, 2, 127, EncodingByte::U32,
Integer<std::uint32_t>(0xa5a5a5a5));
actual = {std::begin(kSerializedBasicStruct),
std::end(kSerializedBasicStruct)};
EXPECT_EQ(expected, actual);
}
{
expected = Compose(EncodingByte::Array, 3, EncodingByte::Structure, 2, 0, 1,
EncodingByte::Structure, 2, 2, 3,
EncodingByte::Structure, 2, 4, 5);
actual = {std::begin(kSerializedBasicStructArray),
std::end(kSerializedBasicStructArray)};
EXPECT_EQ(expected, actual);
}
{
expected = Compose(EncodingByte::Table, 0, 3, /* entry id 0 */ 0, 1, 10,
/* entry id 1 */ 1, 1, 20, /* entry id 2 */ 2, 12,
EncodingByte::Binary, 10, 'a', 'b', 'c', 'd', 'e', 0, 0,
0, 0, 0);
actual = {std::begin(kSerializedBasicTable),
std::end(kSerializedBasicTable)};
EXPECT_EQ(expected, actual);
}
{
expected = Compose(
EncodingByte::Array, 4, EncodingByte::Table, 0, 3,
/* entry id 0 */ 0, 1, 10,
/* entry id 1 */ 1, 1, 20, /* entry id 2 */ 2, 12, EncodingByte::Binary,
10, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
EncodingByte::Table, 0, 3,
/* entry id 0 */ 0, 3, EncodingByte::I16, Integer<std::int16_t>(128),
/* entry id 1 */ 1, 2, EncodingByte::U8, 128,
/* entry id 2 */ 2, 12, EncodingByte::Binary, 10, '0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', EncodingByte::Table, 0, 3,
/* entry id 0 */ 0, 3, EncodingByte::I16, Integer<std::int16_t>(255),
/* entry id 1 */ 1, 2, EncodingByte::U8, 255,
/* entry id 2 */ 2, 12, EncodingByte::Binary, 10, '0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', EncodingByte::Table, 0, 0);
actual = {std::begin(kSerializedBasicTableArray),
std::end(kSerializedBasicTableArray)};
EXPECT_EQ(expected, actual);
}
}
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