serialization_fixture.hh

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/*
 * Copyright (c) 2021 Daniel R. Carvalho
 * All rights reserved
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#include <gtest/gtest.h>
 
#include <cassert>
#include <cerrno>
#include <fstream>
#include <string>
 
#include "base/compiler.hh"
#include "sim/serialize.hh"
 
namespace gem5
{
 
class SerializationFixture : public ::testing::Test
{
  private:
    static unsigned dirNumber;
 
    std::string dirName;
 
  public:
    using ::testing::Test::Test;
 
    static std::string
    generateTempDirName()
    {
        return "/tmp/temp_dir_test" + std::to_string(dirNumber++) + "/";
    }
 
    std::string getDirName() const { return dirName; }
 
    std::string
    getCptPath() const
    {
        return getDirName() + std::string(CheckpointIn::baseFilename);
    }
 
    void
    simulateSerialization(std::string contents) const
    {
        std::ofstream cp(getCptPath());
        cp << contents;
        cp.close();
    }
 
    void
    SetUp() override
    {
        // Create the directory
        dirName = generateTempDirName();
        [[maybe_unused]] int success = mkdir(dirName.c_str(), 0775);
        assert(!(success == -1 && errno != EEXIST));
    }
 
    void
    TearDown() override
    {
        // There may be a cpt file inside, so try to remove it; otherwise,
        // rmdir does not work
        std::remove(getCptPath().c_str());
        // Remove the directory we created on SetUp
        [[maybe_unused]] int success = rmdir(dirName.c_str());
        assert(success == 0);
    }
};
unsigned SerializationFixture::dirNumber = 0;
 
} // anonymous namespace