TestDBus.up
void up()Start a dbus-daemon instance and set DBUS_SESSION_BUS_ADDRESS. After this call, it is safe for unit tests to start sending messages on the session bus.
If this function is called from setup callback of g_test_add(), [gio.test_dbus.TestDBus.down] must be called in its teardown callback.
If this function is called from unit test's main(), then [gio.test_dbus.TestDBus.down] must be called after [glib.global.testRun].