/******************************************************************************
*                 SOFA, Simulation Open-Framework Architecture                *
*                    (c) 2006 INRIA, USTL, UJF, CNRS, MGH                     *
*                                                                             *
* This program is free software; you can redistribute it and/or modify it     *
* under the terms of the GNU Lesser General Public License as published by    *
* the Free Software Foundation; either version 2.1 of the License, or (at     *
* your option) any later version.                                             *
*                                                                             *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
* for more details.                                                           *
*                                                                             *
* You should have received a copy of the GNU Lesser General Public License    *
* along with this program. If not, see <http://www.gnu.org/licenses/>.        *
*******************************************************************************
* Authors: The SOFA Team and external contributors (see Authors.txt)          *
*                                                                             *
* Contact information: contact@sofa-framework.org                             *
******************************************************************************/
#include <sofa/testing/config.h>

#include <sofa/helper/Utils.h>
#include <gtest/gtest.h>

#include <sofa/helper/system/FileSystem.h>
#include <sofa/helper/system/Locale.h>

using sofa::helper::Utils;
using sofa::helper::system::FileSystem;

TEST(UtilsTest, string_to_widestring_to_string)
{
    std::string ascii_chars;
    for (char c = 32 ; c <= 126 ; c++)
        ascii_chars.push_back(c);
    EXPECT_EQ(ascii_chars, Utils::narrowString(Utils::widenString(ascii_chars)));

    // This test will pass if the executable has been executed with a unicode-compliant locale
    // Windows and MacOS are unicode by default
    // But it seems some linux distrib are not (?)
#ifdef __linux
    if(std::locale("").name().find("UTF-8") == std::string::npos)
    {
        return;
    }
#endif

    const std::string s("chaîne de test avec des caractères accentués");
    EXPECT_EQ(s, Utils::narrowString(Utils::widenString(s)));
}

TEST(UtilsTest, widestring_to_string_to_widestring)
{
    const std::string s("chaîne de test avec des caractères accentués");
    const std::wstring ws = Utils::widenString(s);
    EXPECT_EQ(ws, Utils::widenString(Utils::narrowString(ws)));
}

TEST(UtilsTest, downcaseString)
{
    EXPECT_EQ("abcdef", Utils::downcaseString("abcdef"));
    EXPECT_EQ("abcdef", Utils::downcaseString("ABCDEF"));
    EXPECT_EQ("abcdef", Utils::downcaseString("AbCdEf"));
    EXPECT_EQ("abcdef", Utils::downcaseString("ABCDEF"));
}

TEST(UtilsTest, upcaseString)
{
    EXPECT_EQ("ABCDEF", Utils::upcaseString("abcdef"));
    EXPECT_EQ("ABCDEF", Utils::upcaseString("ABCDEF"));
    EXPECT_EQ("ABCDEF", Utils::upcaseString("AbCdEf"));
    EXPECT_EQ("ABCDEF", Utils::upcaseString("ABCDEF"));
}

TEST(UtilsTest, getExecutablePath)
{
    const std::string path = Utils::getExecutablePath();
    EXPECT_TRUE(path.find("Sofa.Helper_test") != std::string::npos);
}

TEST(UtilsTest, getExecutableDirectory)
{
    const std::string path = Utils::getExecutableDirectory();
    EXPECT_TRUE(path.find("bin") != std::string::npos);
}

TEST(UtilsTest, getSofaPathPrefix)
{
    const std::string prefix = Utils::getSofaPathPrefix();
    EXPECT_TRUE(FileSystem::exists(prefix + "/bin"));
}

TEST(UtilsTest, readBasicIniFile_nonexistentFile)
{
    // this test will raise an error on purpose
    const std::map<std::string, std::string> values = Utils::readBasicIniFile("this-file-does-not-exist");
    EXPECT_TRUE(values.empty());
}

TEST(UtilsTest, readBasicIniFile)
{
    const std::string path = std::string(SOFA_TESTING_RESOURCES_DIR) + "/UtilsTest.ini";
    std::map<std::string, std::string> values = Utils::readBasicIniFile(path);
    EXPECT_EQ(3u, values.size());
    EXPECT_EQ(1u, values.count("a"));
    EXPECT_EQ("b again", values["a"]);
    EXPECT_EQ(1u, values.count("someKey"));
    EXPECT_EQ("someValue", values["someKey"]);
    EXPECT_EQ(1u, values.count("foo bar baz"));
    EXPECT_EQ("qux 42", values["foo bar baz"]);
}
