Unit test for `include_dependencies_and_dependents` in lazy mode
Unit test for `include_dependencies_and_dependents` in lazy mode

Summary: This test illustrates a confusing result of this function, where dependents can be incorrectly added as "dependencies" to merge.

Reviewed By: samwgoldman

Differential Revision: D20037794

fbshipit-source-id: 3a677fe48ec0c2a4d20aecf2d45ce03377efb683

nmote/flow,nmote/flow,nmote/flow,nmote/flow,nmote/flow,nmote/flow,nmote/flow