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openmw/apps/openmw_test_suite/detournavigator/serialization/binaryreader.cpp
elsid a58f1a94e3
Add helpers for binary serialization
To construct serializer from given entities:
* Data source/destination - any value that has to be serialized/deserialized,
  usually already existing type.
* Format - functional object to define high level serialization logic to
  define specific format and data schema. Like order of fields, allocation.
* Visitor - functional object to define low level serialization logic to
  operator on given data part.
  * BinaryWriter - copies given value into provided buffer.
  * BinaryReader - copies value into given destination from provided buffer.
  * SizeAccumulator - calculates required buffer size for given data.
2021-10-24 14:20:44 +02:00

67 lines
2.7 KiB
C++

#include "format.hpp"
#include <components/detournavigator/serialization/binaryreader.hpp>
#include <gtest/gtest.h>
#include <gmock/gmock.h>
#include <cstdint>
#include <cstring>
#include <vector>
namespace
{
using namespace testing;
using namespace DetourNavigator::Serialization;
using namespace DetourNavigator::SerializationTesting;
TEST(DetourNavigatorSerializationBinaryReaderTest, shouldReadArithmeticTypeValue)
{
std::uint32_t value = 42;
std::vector<std::byte> data(sizeof(value));
std::memcpy(data.data(), &value, sizeof(value));
BinaryReader binaryReader(data.data(), data.data() + data.size());
std::uint32_t result = 0;
const TestFormat<Mode::Read> format;
binaryReader(format, result);
EXPECT_EQ(result, 42);
}
TEST(DetourNavigatorSerializationBinaryReaderTest, shouldReadArithmeticTypeRangeValue)
{
const std::size_t count = 3;
std::vector<std::byte> data(sizeof(std::size_t) + count * sizeof(std::uint32_t));
std::memcpy(data.data(), &count, sizeof(count));
const std::uint32_t value1 = 960900021;
std::memcpy(data.data() + sizeof(count), &value1, sizeof(std::uint32_t));
const std::uint32_t value2 = 1235496234;
std::memcpy(data.data() + sizeof(count) + sizeof(std::uint32_t), &value2, sizeof(std::uint32_t));
const std::uint32_t value3 = 2342038092;
std::memcpy(data.data() + sizeof(count) + 2 * sizeof(std::uint32_t), &value3, sizeof(std::uint32_t));
BinaryReader binaryReader(data.data(), data.data() + data.size());
std::size_t resultCount = 0;
const TestFormat<Mode::Read> format;
binaryReader(format, resultCount);
std::vector<std::uint32_t> result(resultCount);
binaryReader(format, result.data(), result.size());
EXPECT_THAT(result, ElementsAre(value1, value2, value3));
}
TEST(DetourNavigatorSerializationBinaryReaderTest, forNotEnoughDataForArithmeticTypeShouldThrowException)
{
std::vector<std::byte> data(3);
BinaryReader binaryReader(data.data(), data.data() + data.size());
std::uint32_t result = 0;
const TestFormat<Mode::Read> format;
EXPECT_THROW(binaryReader(format, result), std::runtime_error);
}
TEST(DetourNavigatorSerializationBinaryReaderTest, forNotEnoughDataForArithmeticTypeRangeShouldThrowException)
{
std::vector<std::byte> data(7);
BinaryReader binaryReader(data.data(), data.data() + data.size());
std::vector<std::uint32_t> values(2);
const TestFormat<Mode::Read> format;
EXPECT_THROW(binaryReader(format, values.data(), values.size()), std::runtime_error);
}
}