2 files changed, 40 insertions, 0 deletions
diff --git a/src/test/libical-glib/CMakeLists.txt b/src/test/libical-glib/CMakeLists.txt
index 4d239dba..3f2aea01 100644
--- a/src/test/libical-glib/CMakeLists.txt
+++ b/src/test/libical-glib/CMakeLists.txt
@@ -9,6 +9,7 @@ list(APPEND TEST_FILES
   comprehensive.py
   duration.py
   error.py
+  format.py
   misc.py
   parameter.py
   period.py
diff --git a/src/test/libical-glib/format.py b/src/test/libical-glib/format.py
new file mode 100755
index 00000000..73f8691d
--- /dev/null
+++ b/src/test/libical-glib/format.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+#GI_TYPELIB_PATH=$PREFIX/lib/girepository-1.0/ ./format.py
+
+###############################################################################
+#
+# Copyright 2021 Corentin Noël <corentin.noel@collabora.com>
+# Copyright 2021 Collabora, Ltd. (https://collabora.com)
+#
+# This library is free software; you can redistribute it and/or modify
+# it under the terms of either:
+#
+#   The LGPL as published by the Free Software Foundation, version
+#   2.1, available at: https://www.gnu.org/licenses/lgpl-2.1.txt
+#
+# Or:
+#
+#   The Mozilla Public License Version 2.0. You may obtain a copy of
+#   the License at https://www.mozilla.org/MPL/
+#
+###############################################################################
+
+import gi
+
+gi.require_version('ICalGLib', '3.0')
+
+from gi.repository import ICalGLib
+from gi.repository import GLib
+
+icaltime = ICalGLib.Time.new_from_string("20181224T000000Z")
+glibdatetime = GLib.DateTime.new_from_iso8601("20181224T000000Z")
+
+assert(glibdatetime.to_unix() == icaltime.as_timet());
+
+test_format = "a%a A%A b%b B%B c%c C%C d%d e%e F%F g%g G%G h%h H%H I%I j%j m%m M%M n%n p%p r%r R%R S%S t%t T%T u%u V%V w%w x%x X%X y%y Y%Y z%z Z%Z %%"
+# 127997 is prime, 1315005118 is now
+for t in range(0, 1315005118, 127997):
+    glibdatetime = GLib.DateTime.new_from_unix_utc(t)
+    icaltime = ICalGLib.Time.new_from_timet_with_zone(t, 0, None)
+    assert(glibdatetime.format(test_format) == icaltime.format(test_format))