1 files changed, 73 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/locale_info/GetTimeZoneInformation/test1/test1.cpp b/src/pal/tests/palsuite/locale_info/GetTimeZoneInformation/test1/test1.cpp
new file mode 100644
index 0000000000..bb83ade231
--- /dev/null
+++ b/src/pal/tests/palsuite/locale_info/GetTimeZoneInformation/test1/test1.cpp
@@ -0,0 +1,73 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*============================================================================
+**
+** Source: test1.c
+**
+** Purpose: Tests that GetTimeZoneInformation gives reasonable values.
+**
+**
+**==========================================================================*/
+
+
+#include <palsuite.h>
+
+int __cdecl main(int argc, char *argv[])
+{
+    TIME_ZONE_INFORMATION tzi;
+    DWORD ret;
+
+    if (PAL_Initialize(argc, argv))
+    {
+        return FAIL;
+    }
+
+    ret = GetTimeZoneInformation(&tzi);
+    if (ret == TIME_ZONE_ID_UNKNOWN) 
+    {        
+        /* Occurs in time zones that do not use daylight savings time. */
+        if (tzi.StandardBias != 0)
+        {
+            Fail("GetTimeZoneInformation() gave invalid data!\n"
+                "Returned TIME_ZONE_ID_UNKNOWN but StandardBias != 0!\n");
+        }
+        if (tzi.DaylightBias != 0)
+        {
+            Fail("GetTimeZoneInformation() gave invalid data!\n"
+                "Returned TIME_ZONE_ID_UNKNOWN but DaylightBias != 0!\n");
+        }
+    }    
+    else if (ret == TIME_ZONE_ID_STANDARD)
+    {
+        if (tzi.StandardBias != 0)
+        {
+            Fail("GetTimeZoneInformation() gave invalid data!\n"
+                "StandardBias is %d, should be 0!\n", tzi.StandardBias);
+        }
+    }
+    else if (ret == TIME_ZONE_ID_DAYLIGHT)
+    {
+        if (tzi.DaylightBias != -60 && tzi.DaylightBias != 0)
+        {
+            Fail("GetTimeZoneInformation() gave invalid data!\n"
+                "DaylightBias is %d, should be 0 or -60!\n", tzi.DaylightBias);
+        }
+    }
+    else 
+    {
+        Fail("GetTimeZoneInformation() returned an invalid value!\n");
+    }
+
+    if (tzi.Bias % 30 != 0)
+    {
+        Fail("GetTimeZoneInformation() gave an invalid bias of %d!\n", 
+            tzi.Bias);
+    }
+
+    PAL_Terminate();
+
+    return PASS;
+}
+