Running elixir test suite fails on credo

[van-mronov]

Expected Behavior

make elixir should run elixir tests

Current Behavior

$ make elixir
Resolving Hex dependencies...
Dependency resolution completed:
Unchanged:
  bunt 0.2.0
  credo 1.0.0
  httpotion 3.1.0
  ibrowse 4.4.1
  jason 1.1.2
  jiffy 0.15.2
All dependencies up to date
Checking 21 source files ...

  Software Design
┃
┃ [D] → Found a TODO tag in a comment: # TODO: port sever_port tests from
┃       config.js
┃       test/config_test.exs:73 #(ConfigTest.delete_config)
┃ [D] → Found a TODO tag in a comment: # TODO: In JS we re-fetch _changes with
┃       since_seq, is that
┃       test/replication_test.exs:587 #(ReplicationTest.run_since_seq_repl)
┃ [D] → Found a TODO tag in a comment: # TODO: Parameterize these
┃       test/replication_test.exs:9 #(ReplicationTest)
┃ [D] → Found a TODO tag in a comment: # TODO: switch this to _local when that's
┃       landed
┃       test/config_test.exs:12 #(ConfigTest)
┃ [D] → Found a TODO tag in a comment: # TODO: port remainder of
┃       security_validation.js suite
┃       test/security_validation_test.exs:205 #(SecurityValidationTest)
┃  ...  (5 more, use `-a` to show them)

  Code Readability
┃
┃ [R] → Modules should have a @moduledoc tag.
┃       lib/couch/db_test.ex:1:11 #(Couch.DBTest)
┃ [R] → Modules should have a @moduledoc tag.
┃       test/support/couch_test_case.ex:1:11 #(CouchTestCase)

Please report incorrect results: https://github.com/rrrene/credo/issues

Analysis took 3.8 seconds (0.04s to load, 3.8s running checks)
126 mods/funs, found 2 code readability issues, 10 software design suggestions.

Showing priority issues: ↑ ↗ →  (use `--strict` to show all issues, `--help` for options).
make: *** [elixir-credo] Error 4

Possible Solution

add moduledoc attributes in Couch.DBTest and CouchTestCase