Fix tests for datapackage.json invalidate - fixes #160
Fix tests for datapackage.json invalidate - fixes #160

anuveyatsu/dpr-api,anuveyatsu/dpr-api,anuveyatsu/dpr-api,frictionlessdata/dpr-api,frictionlessdata/dpr-api,frictionlessdata/dpr-api,subhankarb/dpr-api