start with eunit; test the test
1) make
2) erlc -o ebin/ test/*.erl
3)  erl -pa ebin/
 Erlang R16B02 (erts-5.10.3) [source] [smp:2:2] [async-threads:10] [hipe] [kernel-poll:false]

Eshell V5.10.3  (abort with ^G)
4) 1> eunit:test(hackney,[verbose]).
======================== EUnit ========================
module 'hackney'
  hackney_tests: te_test (module 'hackney_tests')...ok
  [done in 0.002 s]
=======================================================
  Test passed.
ok
	new file:   test/hackney_tests.erl