[inferbo] Added FN test
[inferbo] Added FN test

Reviewed By: skcho

Differential Revision: D14592973

fbshipit-source-id: 5f5e88996

facebook/infer,jvillard/infer,facebook/infer,facebook/infer,jvillard/infer,jvillard/infer,jvillard/infer,jvillard/infer,jvillard/infer,jvillard/infer,facebook/infer,facebook/infer,facebook/infer,facebook/infer