#include <gtest/gtest.h>
#include <map>
#include <string>
#include <chrono>
#include <thread>

// 假设 HealthController 的头文件已包含，这里模拟实现
// 因为原代码是 Java，此处仅模拟 C++ 对应逻辑的测试

class HealthController {
public:
    std::map<std::string, std::string> health() {
        auto now = std::chrono::system_clock::now();
        auto time_t = std::chrono::system_clock::to_time_t(now);
        char buffer[64];
        std::strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", std::localtime(&time_t));
        
        return {
            {"status", "UP"},
            {"service", "商城管理系统"},
            {"timestamp", std::string(buffer)}
        };
    }
};

// 测试用例
TEST(HealthControllerTest, testHealthNormalInput) {
    HealthController controller;
    auto result = controller.health();

    EXPECT_EQ(result.at("status"), "UP");
    EXPECT_EQ(result.at("service"), "商城管理系统");
    EXPECT_FALSE(result.at("timestamp").empty());
    EXPECT_TRUE(result.at("timestamp").length() >= 19); // YYYY-MM-DD HH:MM:SS
}

TEST(HealthControllerTest, testHealthBoundaryValues) {
    HealthController controller;
    auto result = controller.health();

    // 验证时间戳格式是否合理（边界值检查）
    const std::string& timestamp = result.at("timestamp");
    EXPECT_TRUE(timestamp.length() == 19 || timestamp.length() == 20); // 考虑毫秒精度
    EXPECT_EQ(timestamp[4], '-');
    EXPECT_EQ(timestamp[7], '-');
    EXPECT_EQ(timestamp[10], ' ');
    EXPECT_EQ(timestamp[13], ':');
    EXPECT_EQ(timestamp[16], ':');
}

TEST(HealthControllerTest, testHealthSpecialScenario) {
    HealthController controller;
    auto result1 = controller.health();
    auto result2 = controller.health();

    // 确保两次调用返回的时间戳不同（非静态或缓存行为）
    EXPECT_NE(result1.at("timestamp"), result2.at("timestamp"));
    EXPECT_TRUE(result1.at("timestamp").length() > 0);
    EXPECT_TRUE(result2.at("timestamp").length() > 0);
}