[glib] glib/tests/gdatetime: use UTC time in test_GDateTime_diff()

[Dan Winship <danw src gnome org>]

commit 5415537edb383fedfc5d4edc17dcf2bd2b8a38af
Author: Dan Winship <danw gnome org>
Date:   Sun Jun 2 19:59:09 2013 -0300

    glib/tests/gdatetime: use UTC time in test_GDateTime_diff()
    
    test_GDateTime_diff() checks that the span from 2009-01-01 to
    2010-01-01 is exactly 365 * G_TIME_SPAN_DAY, but it does this using
    local time, and so fails if you are in a timezone that is in the
    southern hemisphere which only did DST during one of 2008-2009 and
    2009-2010 (in which case the year will end up being one hour too long
    or too short).
    
    Switch the diff tests to use UTC time instead; there are plenty of
    other local time tests already.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=701529

 glib/tests/gdatetime.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/glib/tests/gdatetime.c b/glib/tests/gdatetime.c
index 4f82929..3bb5ebb 100644
--- a/glib/tests/gdatetime.c
+++ b/glib/tests/gdatetime.c
@@ -550,8 +550,8 @@ test_GDateTime_diff (void)
 #define TEST_DIFF(y,m,d,y2,m2,d2,u) G_STMT_START { \
   GDateTime *dt1, *dt2; \
   GTimeSpan  ts = 0; \
-  dt1 = g_date_time_new_local (y, m, d, 0, 0, 0); \
-  dt2 = g_date_time_new_local (y2, m2, d2, 0, 0, 0); \
+  dt1 = g_date_time_new_utc (y, m, d, 0, 0, 0); \
+  dt2 = g_date_time_new_utc (y2, m2, d2, 0, 0, 0); \
   ts = g_date_time_difference (dt2, dt1); \
   g_assert_cmpint (ts, ==, u); \
   g_date_time_unref (dt1); \