Add unittests for Point json output
Add unittests for Point json output

Gouthamve/prometheus,kangwoo/prometheus,kangwoo/prometheus,alileza/prometheus,Gouthamve/prometheus,prometheus/prometheus,keegancsmith/prometheus,kangwoo/prometheus,Gouthamve/prometheus,GoogleCloudPlatform/prometheus,Gouthamve/prometheus,keegancsmith/prometheus,GoogleCloudPlatform/prometheus,alileza/prometheus,prometheus/prometheus,kangwoo/prometheus,amorken/prometheus,alileza/prometheus,GoogleCloudPlatform/prometheus,GoogleCloudPlatform/prometheus,keegancsmith/prometheus,GoogleCloudPlatform/prometheus,prometheus/prometheus,prometheus/prometheus,keegancsmith/prometheus,amorken/prometheus,alileza/prometheus,amorken/prometheus,alileza/prometheus,amorken/prometheus,keegancsmith/prometheus,prometheus/prometheus