test_template.hpp

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/*
 * SPDX-FileCopyrightText: 2024 M5Stack Technology CO LTD
 *
 * SPDX-License-Identifier: MIT
 */
#ifndef M5_UNIT_COMPONENT_GOOGLETEST_TEMPLATE_HPP
#define M5_UNIT_COMPONENT_GOOGLETEST_TEMPLATE_HPP
 
#include "../M5UnitComponent.hpp"
#include <type_traits>
#include <Wire.h>
#include <esp32-hal-i2c.h>
 
namespace m5 {
namespace unit {
namespace googletest {
 
template <uint32_t FREQ, uint32_t WNUM = 0>
class GlobalFixture : public ::testing::Environment {
    static_assert(WNUM < 2, "Wire number must be lesser than 2");
 
public:
    void SetUp() override
    {
        auto pin_num_sda = M5.getPin(m5::pin_name_t::port_a_sda);
        auto pin_num_scl = M5.getPin(m5::pin_name_t::port_a_scl);
 
        TwoWire* w[2] = {&Wire, &Wire1};
        if (i2cIsInit(WNUM)) {
            M5_LOGW("Already inititlized Wire. Terminate and restart");
            w[WNUM]->end();
        }
        w[WNUM]->begin(pin_num_sda, pin_num_scl, FREQ);
    }
};
 
template <typename U, typename TP>
class ComponentTestBase : public ::testing::TestWithParam<TP> {
    static_assert(std::is_base_of<m5::unit::Component, U>::value, "U must be derived from Component");
 
protected:
    virtual void SetUp() override
    {
        unit.reset(get_instance());
        if (!unit) {
            FAIL() << "Failed to get_instance";
            GTEST_SKIP();
            return;
        }
        ustr = m5::utility::formatString("%s:%s", unit->deviceName(), is_using_hal() ? "HAL" : "Wire");
        if (!begin()) {
            FAIL() << "Failed to begin " << ustr;
            GTEST_SKIP();
        }
    }
 
    virtual void TearDown() override
    {
    }
 
    virtual bool begin()
    {
        if (is_using_hal()) {
            // Using M5HAL
            auto pin_num_sda = M5.getPin(m5::pin_name_t::port_a_sda);
            auto pin_num_scl = M5.getPin(m5::pin_name_t::port_a_scl);
            m5::hal::bus::I2CBusConfig i2c_cfg;
            i2c_cfg.pin_sda = m5::hal::gpio::getPin(pin_num_sda);
            i2c_cfg.pin_scl = m5::hal::gpio::getPin(pin_num_scl);
            auto i2c_bus    = m5::hal::bus::i2c::getBus(i2c_cfg);
            return Units.add(*unit, i2c_bus ? i2c_bus.value() : nullptr) && Units.begin();
        }
        // Using TwoWire
        return Units.add(*unit, Wire) && Units.begin();
    }
 
    virtual bool is_using_hal() const = 0;
    virtual U* get_instance() = 0;
 
    std::string ustr{};
    std::unique_ptr<U> unit{};
    m5::unit::UnitUnified Units;
};
 
}  // namespace googletest
}  // namespace unit
}  // namespace m5
#endif