SysFsGpioConfig.cpp

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/*
    Copyright (C) 2014-2016 Leosac

    This file is part of Leosac.

    Leosac is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Leosac 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 Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program. If not, see <http://www.gnu.org/licenses/>.
*/

#include "modules/sysfsgpio/SysFsGpioConfig.hpp"
#include "tools/log.hpp"
#include "gtest/gtest.h"
#include <string>

using namespace Leosac::Module::SysFsGpio;

namespace Leosac
{
namespace Test
{

class SysFsGpioConfigTest : public ::testing::Test
{
  public:
    // starts the led module
    SysFsGpioConfigTest()
    {
        ctx_ = new zmqpp::context_t();

        build_config_case1();
        build_config_case2();
        build_config_case3();
    }

    ~SysFsGpioConfigTest()
    {
        delete ctx_;
    }

    void build_config_case1()
    {
        boost::property_tree::ptree aliases_cfg, module_cfg;

        module_cfg.add("export_path", "/path/to/export");
        module_cfg.add("unexport_path", "/path/to/unexport");
        module_cfg.add("value_path", "/path/to/gpios/__PLACEHOLDER__/value");
        module_cfg.add("edge_path", "/path/to/gpios/__PLACEHOLDER__/edge");
        module_cfg.add("direction_path", "/path/to/gpios/__PLACEHOLDER__/direction");

        module_cfg.add_child("aliases", aliases_cfg);
        cfg_case_1_ = module_cfg;
    }

    void build_config_case2()
    {
        boost::property_tree::ptree aliases_cfg, module_cfg;

        module_cfg.add("export_path", "/path/to/export");
        module_cfg.add("unexport_path", "/path/to/unexport");
        module_cfg.add("value_path", "/random/path/to/__PLACEHOLDER__/value");
        module_cfg.add("edge_path", "/random/path/to/__PLACEHOLDER__/edge");
        module_cfg.add("direction_path",
                       "/random/path/to/__PLACEHOLDER__/direction");

        // we define default aliases rules.
        aliases_cfg.add("default", "gpio__NO__");
        module_cfg.add_child("aliases", aliases_cfg);
        cfg_case_2_ = module_cfg;
    }

    void build_config_case3()
    {
        boost::property_tree::ptree aliases_cfg, module_cfg;

        module_cfg.add("export_path", "/path/to/export");
        module_cfg.add("unexport_path", "/path/to/unexport");
        module_cfg.add("value_path", "/path/to/gpios/__PLACEHOLDER__/value");
        module_cfg.add("edge_path", "/path/to/gpios/__PLACEHOLDER__/edge");
        module_cfg.add("direction_path", "/path/to/gpios/__PLACEHOLDER__/direction");

        // we define default aliases rules.
        aliases_cfg.add("default", "gpio__NO__");
        // lets say gpio with number 21 is somewhere else in the filesystem
        aliases_cfg.add("21", "gpio_magic_number");
        module_cfg.add_child("aliases", aliases_cfg);

        cfg_case_3_ = module_cfg;
    }

    zmqpp::context *ctx_;
    boost::property_tree::ptree cfg_case_1_;
    boost::property_tree::ptree cfg_case_2_;
    boost::property_tree::ptree cfg_case_3_;
};

TEST_F(SysFsGpioConfigTest, ExportUnexportPath)
{
    SysFsGpioConfig my_config(cfg_case_1_);

    ASSERT_EQ("/path/to/export", my_config.export_path());
    ASSERT_EQ("/path/to/unexport", my_config.unexport_path());
}

TEST_F(SysFsGpioConfigTest, PathAndDefaultAliases)
{
    SysFsGpioConfig my_config(cfg_case_2_);

    ASSERT_EQ("/random/path/to/gpio14/value", my_config.value_path(14));
    ASSERT_EQ("/random/path/to/gpio3/value", my_config.value_path(3));
    ASSERT_EQ("/random/path/to/gpio17/value", my_config.value_path(17));
}

TEST_F(SysFsGpioConfigTest, MoreComplexeAliases)
{
    SysFsGpioConfig my_config(cfg_case_3_);

    ASSERT_EQ("/path/to/gpios/gpio14/value", my_config.value_path(14));
    ASSERT_EQ("/path/to/gpios/gpio3/value", my_config.value_path(3));
    ASSERT_EQ("/path/to/gpios/gpio_magic_number/value", my_config.value_path(21));

    ASSERT_EQ("/path/to/gpios/gpio3/edge", my_config.edge_path(3));
    ASSERT_EQ("/path/to/gpios/gpio_magic_number/edge", my_config.edge_path(21));

    ASSERT_EQ("/path/to/gpios/gpio3/direction", my_config.direction_path(3));
    ASSERT_EQ("/path/to/gpios/gpio_magic_number/direction",
              my_config.direction_path(21));
}
}
}