[hack] hh_fileinfo tests
[hack] hh_fileinfo tests

Summary: add tests

Reviewed By: dabek

Differential Revision: D7459463

fbshipit-source-id: 0231abd2c5e8ff77d72d0a8e4cf0d954d8163c4d

gabelevi/flow,JonathanUsername/flow,popham/flow,mroch/flow,samwgoldman/flow,samwgoldman/flow,gabelevi/flow,nmote/flow,nmote/flow,JonathanUsername/flow,facebook/flow,jamesgpearce/flow,gabelevi/flow,gabelevi/flow,facebook/flow,popham/flow,mroch/flow,JonathanUsername/flow,gabelevi/flow,AgentME/flow,AgentME/flow,claudiopro/flow,gabelevi/flow,nmote/flow,jamesgpearce/flow,jamesgpearce/flow,mroch/flow,claudiopro/flow,facebook/flow,jamesgpearce/flow,claudiopro/flow,jamesgpearce/flow,AgentME/flow,samwgoldman/flow,mroch/flow,JonathanUsername/flow,AgentME/flow,samwgoldman/flow,jamesgpearce/flow,mroch/flow,JonathanUsername/flow,popham/flow,JonathanUsername/flow,facebook/flow,popham/flow,facebook/flow,nmote/flow,jamesgpearce/flow,JonathanUsername/flow,samwgoldman/flow,samwgoldman/flow,samwgoldman/flow,AgentME/flow,nmote/flow,popham/flow,facebook/flow,facebook/flow,gabelevi/flow,claudiopro/flow,nmote/flow,claudiopro/flow,popham/flow,popham/flow,mroch/flow,nmote/flow,mroch/flow