From 285313cc68a860e84acd932a59102e2aed1b8e9e Mon Sep 17 00:00:00 2001
From: Igor Pissolati <igo08an@hotmail.com>
Date: Mon, 28 Apr 2025 17:20:37 -0300
Subject: [PATCH] Add test for TimeZoneInformation

---
 src/samples/test-sample/test.cpp | 43 ++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/src/samples/test-sample/test.cpp b/src/samples/test-sample/test.cpp
index 7923e6d1..70f909b2 100644
--- a/src/samples/test-sample/test.cpp
+++ b/src/samples/test-sample/test.cpp
@@ -458,6 +458,48 @@ namespace
         return true;
     }
 
+    bool test_time_zone()
+    {
+        DYNAMIC_TIME_ZONE_INFORMATION current_dtzi = {};
+        DWORD result = GetDynamicTimeZoneInformation(&current_dtzi);
+
+        if (result == TIME_ZONE_ID_INVALID)
+        {
+            return false;
+        }
+
+        if (current_dtzi.Bias != -60 || current_dtzi.StandardBias != 0 || current_dtzi.DaylightBias != -60 ||
+            current_dtzi.DynamicDaylightTimeDisabled != FALSE)
+        {
+            return false;
+        }
+
+        if (wcscmp(current_dtzi.StandardName, L"W. Europe Standard Time") != 0 ||
+            wcscmp(current_dtzi.DaylightName, L"W. Europe Daylight Time") != 0 ||
+            wcscmp(current_dtzi.TimeZoneKeyName, L"W. Europe Standard Time") != 0)
+        {
+            return false;
+        }
+
+        if (current_dtzi.StandardDate.wYear != 0 || current_dtzi.StandardDate.wMonth != 10 ||
+            current_dtzi.StandardDate.wDayOfWeek != 0 || current_dtzi.StandardDate.wDay != 5 ||
+            current_dtzi.StandardDate.wHour != 3 || current_dtzi.StandardDate.wMinute != 0 ||
+            current_dtzi.StandardDate.wSecond != 0 || current_dtzi.StandardDate.wMilliseconds != 0)
+        {
+            return false;
+        }
+
+        if (current_dtzi.DaylightDate.wYear != 0 || current_dtzi.DaylightDate.wMonth != 3 ||
+            current_dtzi.DaylightDate.wDayOfWeek != 0 || current_dtzi.DaylightDate.wDay != 5 ||
+            current_dtzi.DaylightDate.wHour != 2 || current_dtzi.DaylightDate.wMinute != 0 ||
+            current_dtzi.DaylightDate.wSecond != 0 || current_dtzi.DaylightDate.wMilliseconds != 0)
+        {
+            return false;
+        }
+
+        return true;
+    }
+
     void throw_exception()
     {
         if (do_the_task)
@@ -651,6 +693,7 @@ int main(const int argc, const char* argv[])
     RUN_TEST(test_working_directory, "Working Directory")
     RUN_TEST(test_registry, "Registry")
     RUN_TEST(test_system_info, "System Info")
+    RUN_TEST(test_time_zone, "Time Zone")
     RUN_TEST(test_threads, "Threads")
     RUN_TEST(test_env, "Environment")
     RUN_TEST(test_exceptions, "Exceptions")