Add option for suppress logs in test cases.

[ever-cifuentes-globant]

It would awesome to have a functionality similar to the ExUnit tags. Especially for the suppression of the logs generated in the tests.

@tag :capture_log
it "should forward the error result and stop" do
  #...
do

It would be useful for cases like this one, where ran three tests successfully but the first one is showing a ugly log.

.2017-10-11 14:46:57.783 nonode@nohost pid=<0.30.0> : Process #PID<0.576.0> raised an exception
** (RuntimeError) crash_test
    spec/orders_service/fsm/recipient_spec.exs:683: anonymous fn/0 in (....)
..

This functionality already exists and is not documented correctly? or could be added in a near future?
A function capture_log already exists, but the purpose is different.

[antonmi]

Hi, @ever-cifuentes-globant !
ESpec has a different notation for tags (see (Context blocks and tags)
[https://github.com/antonmi/espec/blob/master/README.md#context-blocks-and-tags])

Idea of :capture_log tag is awesome! ESpec definitely needs such functionality!

Thank you!

[ever-cifuentes-globant]

This seems to be related.. I also found this kind of warnings related to the coverage, Again, it would be awesome to suppress those kind of warnings and have a nice and green tests executed.

...WARNING: Deleting data for module 'Elixir.ProcessQueue' imported from
["/path/to/my/project/process_queue/Elixir.ProcessQueue.coverdata",
 "/path/to/my/project/process_queue/Elixir.ProcessQueue_meck_original.coverdata"]