As pointed out in bug 644601, session_bus_up() requires
us to set up environment variables for things to work.
g_test_init (&argc, &argv, NULL);
+ /* all the tests use a session bus with a well-known address
+ * that we can bring up and down using session_bus_up() and
+ * session_bus_down().
+ */
+ g_unsetenv ("DISPLAY");
+ g_setenv ("DBUS_SESSION_BUS_ADDRESS", session_bus_get_temporary_address (), TRUE);
+
g_test_add_func ("/gapplication/basic", basic);
g_test_add_func ("/gapplication/non-unique", test_nonunique);
g_test_add_func ("/gapplication/properties", properties);