date: simplify test package

recipes/date/all/test_package/CMakeLists.txt

@@ -1,7 +1,7 @@
-cmake_minimum_required(VERSION 3.8)
+cmake_minimum_required(VERSION 3.15)
 project(test_package LANGUAGES CXX)
 
-find_package(date REQUIRED CONFIG)
+find_package(date REQUIRED)
 
 add_executable(${PROJECT_NAME} test_package.cpp)
 target_link_libraries(${PROJECT_NAME} PRIVATE date::date)

recipes/date/all/test_package/test_package.cpp

@@ -1,62 +1,17 @@
 #include "date/date.h"
 #include "date/tz.h"
-
-#include <chrono>
-#include <cstdlib>
 #include <iostream>
-#include <type_traits>
-
-class ZoneOffset {
-public:
-    explicit ZoneOffset(std::chrono::minutes offset)
-        : _offset(offset) {}
-
-    template <class Duration>
-    auto to_local(date::sys_time<Duration> tp) const
-        -> date::local_time<typename std::common_type<Duration, std::chrono::minutes>::type> {
-        using namespace date;
-        using namespace std::chrono;
-        using LT = date::local_time<typename std::common_type<Duration, minutes>::type>;
-        return LT{(tp + _offset).time_since_epoch()};
-    }
-
-    template <class Duration>
-    auto to_sys(date::local_time<Duration> tp) const
-        -> date::sys_time<typename std::common_type<Duration, std::chrono::minutes>::type> {
-        using namespace date;
-        using namespace std::chrono;
-        using ST = date::sys_time<typename std::common_type<Duration, minutes>::type>;
-        return ST{(tp - _offset).time_since_epoch()};
-    }
-
-private:
-    std::chrono::minutes _offset;
-};
 
 int main() {
-    using std::chrono::hours;
-    using std::chrono::milliseconds;
-    using std::chrono::minutes;
-    using namespace date;
-
-    auto date1 = 2015_y/March/22;
-    std::cout << date1 << '\n';
-    auto date2 = March/22/2015;
-    std::cout << date2 << '\n';
-    auto date3 = 22_d/March/2015;
-    std::cout << date3 << '\n';
-
-    ZoneOffset p3_45{hours{3} + minutes{45}};
-    zoned_time<milliseconds, ZoneOffset*> zt{&p3_45, floor<milliseconds>(std::chrono::system_clock::now())};
-    std::cout << zt.get_sys_time() << " (sys time)\n";
-    std::cout << zt.get_local_time() << " (local time)\n";
+    const date::year_month_day conan_two(date::year(2023), date::month(2), date::day(22));
+    std::cout << "Conan was released on: " << conan_two << std::endl;
 
 #ifndef DATE_HEADER_ONLY
     try {
-        auto tz = date::current_zone()->name();
-        std::cout << "timezone: " << tz << std::endl;
-    } catch (const std::exception & e) {
-         std::cout << "exception caught " << e.what() << std::endl;
+        const date::time_zone* tz = date::current_zone();
+    }
+    catch (const std::exception & e) {
+        std::cout << "exception caught " << e.what() << std::endl;
     }
 #endif