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/**
* Copyright © 2019 IBM Corporation
*
* 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 "extensions/openpower-pels/stream.hpp"
#include <iostream>
#include <gtest/gtest.h>
using namespace openpower::pels;
TEST(StreamTest, TestExtract)
{
std::vector<uint8_t> data{0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 'h', 'e', 'l', 'l', 'o'};
Stream stream{data};
{
uint8_t v;
stream >> v;
EXPECT_EQ(v, 0x11);
}
{
uint16_t v;
stream >> v;
EXPECT_EQ(v, 0x2233);
}
{
uint32_t v;
stream >> v;
EXPECT_EQ(v, 0x44556677);
}
{
uint64_t v;
stream >> v;
EXPECT_EQ(v, 0x0102030405060708);
}
{
char v[6] = {0};
stream.read(v, 5);
EXPECT_EQ(memcmp(v, "hello", 5), 0);
}
EXPECT_EQ(stream.remaining(), 0);
// At the end, so should throw.
uint8_t v;
EXPECT_THROW(stream >> v, std::out_of_range);
}
TEST(StreamTest, InputTestNoExpansion)
{
std::vector<uint8_t> data(256, 0);
Stream stream(data);
uint8_t v1 = 0x11;
uint16_t v2 = 0x2233;
uint64_t v3 = 0x445566778899AABB;
uint32_t v4 = 0xCCDDEEFF;
stream << v3 << v2 << v4 << v1;
uint8_t e1;
uint16_t e2;
uint64_t e3;
uint32_t e4;
stream.offset(0);
stream >> e3 >> e2 >> e4 >> e1;
EXPECT_EQ(v1, e1);
EXPECT_EQ(v2, e2);
EXPECT_EQ(v3, e3);
EXPECT_EQ(v4, e4);
}
TEST(StreamTest, InputTestExpansion)
{
// The stream will expand the underlying vector
std::vector<uint8_t> data;
Stream stream(data);
uint32_t v1 = 0xAABBCCDD;
stream << v1;
stream.offset(0);
uint32_t e1;
stream >> e1;
EXPECT_EQ(data.size(), 4);
EXPECT_EQ(v1, e1);
stream.offset(2);
uint64_t v2 = 0x0102030405060708;
stream << v2;
EXPECT_EQ(data.size(), 10);
uint64_t e2;
stream.offset(2);
stream >> e2;
EXPECT_EQ(v2, e2);
auto origSize = data.size();
uint8_t v3 = 0xCC;
stream << v3;
EXPECT_EQ(origSize + 1, data.size());
stream.offset(stream.offset() - 1);
uint8_t e3;
stream >> e3;
EXPECT_EQ(v3, e3);
}
TEST(StreamTest, ReadWriteTest)
{
std::vector<uint8_t> data{0x11, 0x22, 0x33, 0x44, 0x55, 0x66,
0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc};
Stream stream{data};
uint8_t buf[data.size()];
stream.read(buf, data.size());
for (size_t i = 0; i < data.size(); i++)
{
EXPECT_EQ(buf[i], data[i]);
// for the next test
buf[i] = 0x20 + i;
}
stream.offset(6);
stream.write(buf, 6);
for (size_t i = 0; i < 6; i++)
{
EXPECT_EQ(buf[i], data[i + 6]);
}
}
TEST(StreamTest, TestOffsets)
{
std::vector<uint8_t> data{0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
Stream stream{data, 3};
{
uint8_t v;
stream >> v;
EXPECT_EQ(v, 0x44);
EXPECT_EQ(stream.offset(), 4);
}
stream.offset(6);
{
uint8_t v;
stream >> v;
EXPECT_EQ(v, 0x77);
EXPECT_EQ(stream.offset(), 7);
EXPECT_EQ(stream.remaining(), 0);
}
EXPECT_THROW(stream.offset(100), std::out_of_range);
}
TEST(StreamTest, TestVectorInsertExtract)
{
std::vector<uint8_t> toInsert{0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77};
std::vector<uint8_t> data;
// Insert
Stream stream{data};
stream << toInsert;
EXPECT_EQ(data, toInsert);
// Extract
std::vector<uint8_t> toExtract;
toExtract.resize(toInsert.size());
stream.offset(0);
stream >> toExtract;
EXPECT_EQ(data, toExtract);
// Go off the end
EXPECT_THROW(stream >> toExtract, std::out_of_range);
}
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