[glib/win32-enhance-gtimezone: 7/9] Update the gdatetime Test Program for Windows

[Chun-wei Fan <fanchunwei src gnome org>]

commit 5ca4ac16effb66d033bcd1fc4183edc27f52e54d
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Thu Feb 20 11:48:00 2014 +0800

    Update the gdatetime Test Program for Windows
    
    Update the gdatetime test program to make use of the updates that was
    done in gtimezone.c in the previous commit, so that we don't have to
    worry what language version of Windows the tests are being run in, but
    instead be assured that we produce and check for the English-language
    time zone name strings.
    
    Also, instead of testing for "Pacific Standard Time" in
    test_GDAteTime_printf(), use GetDynamicTimeZoneInformation() to get the
    actual time zone string (where the system running the test program is)
    we want to check for, because on Windows the actual result will be
    dependent on which timezone the system running the test program is in.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=719344

 glib/tests/gdatetime.c | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)
---
diff --git a/glib/tests/gdatetime.c b/glib/tests/gdatetime.c
index 6d89ea47a..ff2f89a61 100644
--- a/glib/tests/gdatetime.c
+++ b/glib/tests/gdatetime.c
@@ -25,6 +25,11 @@
 #include <glib/gstdio.h>
 #include <locale.h>
 
+#ifdef G_OS_WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+
 #define ASSERT_DATE(dt,y,m,d) G_STMT_START { \
   g_assert_nonnull ((dt)); \
   g_assert_cmpint ((y), ==, g_date_time_get_year ((dt))); \
@@ -1029,6 +1034,13 @@ test_GDateTime_new_full (void)
   GTimeZone *tz, *dt_tz;
   GDateTime *dt;
 
+#ifdef G_OS_WIN32
+  LCID currLcid = GetThreadLocale ();
+  LANGID currLangId = LANGIDFROMLCID (currLcid);
+  LANGID en = MAKELANGID (LANG_ENGLISH, SUBLANG_ENGLISH_US);
+  SetThreadUILanguage (en);
+#endif
+
   dt = g_date_time_new_utc (2009, 12, 11, 12, 11, 10);
   g_assert_cmpint (2009, ==, g_date_time_get_year (dt));
   g_assert_cmpint (12, ==, g_date_time_get_month (dt));
@@ -1063,6 +1075,7 @@ test_GDateTime_new_full (void)
                     g_date_time_get_timezone_abbreviation (dt));
   g_assert_cmpstr ("Pacific Standard Time", ==,
                    g_time_zone_get_identifier (dt_tz));
+  SetThreadUILanguage (currLangId);
 #endif
   g_assert (!g_date_time_is_daylight_savings (dt));
   g_date_time_unref (dt);
@@ -1333,6 +1346,11 @@ test_GDateTime_printf (void)
   struct tm tt;
   time_t t;
 
+#ifdef G_OS_WIN32
+  gchar *current_tz = NULL;
+  DYNAMIC_TIME_ZONE_INFORMATION dtz_info;
+#endif
+
 #define TEST_PRINTF(f,o)                        G_STMT_START {  \
 GDateTime *__dt = g_date_time_new_local (2009, 10, 24, 0, 0, 0);\
   gchar *__p = g_date_time_format (__dt, (f));                  \
@@ -1430,7 +1448,14 @@ GDateTime *__dt = g_date_time_new_local (2009, 10, 24, 0, 0, 0);\
 #ifdef G_OS_UNIX
   TEST_PRINTF ("%Z", dst);
 #elif defined G_OS_WIN32
-  TEST_PRINTF ("%Z", "Pacific Standard Time");
+  g_assert (GetDynamicTimeZoneInformation (&dtz_info) != TIME_ZONE_ID_INVALID);
+  if (wcscmp (dtz_info.StandardName, L"") != 0)
+    current_tz = g_utf16_to_utf8 (dtz_info.StandardName, -1, NULL, NULL, NULL);
+  else
+    current_tz = g_utf16_to_utf8 (dtz_info.DaylightName, -1, NULL, NULL, NULL);
+
+  TEST_PRINTF ("%Z", current_tz);
+  g_free (current_tz);
 #endif
 
   if (old_lc_messages != NULL)