tests: make checks for from/to_g_date_time() actually work properly
tests: make checks for from/to_g_date_time() actually work properly

lovebug356/gstreamer,cfoch/gstreamer,jpxiong/gstreamer,cfoch/gstreamer,justinjoy/gstreamer,Lachann/gstreamer,ensonic/gstreamer,surround-io/gstreamer,lovebug356/gstreamer,cablelabs/gstreamer,surround-io/gstreamer,centricular/gstreamer,collects/gstreamer,jpakkane/gstreamer,jpxiong/gstreamer,justinjoy/gstreamer,collects/gstreamer,mparis/gstreamer,krichter722/gstreamer,lubosz/gstreamer,ensonic/gstreamer,mparis/gstreamer,Lachann/gstreamer,StreamUtils/gstreamer,lovebug356/gstreamer,shelsonjava/gstreamer,cfoch/gstreamer,krieger-od/gstreamer,StreamUtils/gstreamer,centricular/gstreamer,collects/gstreamer,krichter722/gstreamer,krieger-od/gstreamer,StreamUtils/gstreamer,mparis/gstreamer,krichter722/gstreamer,centricular/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,collects/gstreamer,lubosz/gstreamer,StreamUtils/gstreamer,collects/gstreamer,mparis/gstreamer,cablelabs/gstreamer,jpakkane/gstreamer,lovebug356/gstreamer,ensonic/gstreamer,Lachann/gstreamer,lovebug356/gstreamer,justinjoy/gstreamer,cablelabs/gstreamer,krieger-od/gstreamer,lubosz/gstreamer,cfoch/gstreamer,krieger-od/gstreamer,cablelabs/gstreamer,krieger-od/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,mparis/gstreamer,centricular/gstreamer,lubosz/gstreamer,centricular/gstreamer,surround-io/gstreamer,jpakkane/gstreamer,justinjoy/gstreamer,Lachann/gstreamer,surround-io/gstreamer,ensonic/gstreamer,krichter722/gstreamer,cablelabs/gstreamer,jpxiong/gstreamer,shelsonjava/gstreamer,surround-io/gstreamer,Lachann/gstreamer,shelsonjava/gstreamer,ensonic/gstreamer,justinjoy/gstreamer,lubosz/gstreamer,jpakkane/gstreamer,jpakkane/gstreamer,shelsonjava/gstreamer,krichter722/gstreamer