molecule verify -s builder fails

[t2d]

Bug

Description

I tried to work on #1637, but when I try to build the debian packages, the verify step fails

Steps to Reproduce

molecule --debug verify -s builder
--> Test matrix
    
└── builder
    └── verify
--> Inventory /home/t/Code/securedrop/molecule/builder/.molecule/../../../install_files/ansible-base/group_vars linked to /home/t/Code/securedrop/molecule/builder/.molecule/group_vars
--> Scenario: 'builder'
--> Action: 'verify'
--> Executing Testinfra tests found in /home/t/Code/securedrop/molecule/builder/tests/...
DEBUG: ANSIBLE ENVIRONMENT
---
ANSIBLE_ACTION_PLUGINS: ../../install_files/ansible-base/action_plugins
ANSIBLE_CONFIG: /home/t/Code/securedrop/molecule/builder/.molecule/ansible.cfg
ANSIBLE_FILTER_PLUGINS: /usr/local/lib/python2.7/dist-packages/molecule/provisioner/ansible/plugins/filters:/home/t/Code/securedrop/plugins/filters:/home/t/Code/securedrop/molecule/builder/.molecule/plugins/filters
ANSIBLE_LIBRARY: /usr/local/lib/python2.7/dist-packages/molecule/provisioner/ansible/plugins/libraries:/home/t/Code/securedrop/library:/home/t/Code/securedrop/molecule/builder/.molecule/library
ANSIBLE_ROLES_PATH: /home/t/Code:/home/t/Code/securedrop/molecule/builder/.molecule/roles:/home/t/Code/securedrop/install_files/ansible-base/roles

DEBUG: MOLECULE ENVIRONMENT
---
MOLECULE_DEBUG: 'True'
MOLECULE_DEPENDENCY_NAME: galaxy
MOLECULE_DRIVER_NAME: docker
MOLECULE_EPHEMERAL_DIRECTORY: /home/t/Code/securedrop/molecule/builder/.molecule
MOLECULE_FILE: /home/t/Code/securedrop/molecule/builder/molecule.yml
MOLECULE_INSTANCE_CONFIG: /home/t/Code/securedrop/molecule/builder/.molecule/instance_config.yml
MOLECULE_INVENTORY_FILE: /home/t/Code/securedrop/molecule/builder/.molecule/ansible_inventory.yml
MOLECULE_LINT_NAME: yamllint
MOLECULE_PROVISIONER_NAME: ansible
MOLECULE_SCENARIO_DIRECTORY: /home/t/Code/securedrop/molecule/builder
MOLECULE_SCENARIO_NAME: builder
MOLECULE_VERIFIER_NAME: testinfra

DEBUG: COMMAND
/usr/local/bin/py.test --debug --connection=ansible --ansible-inventory=/home/t/Code/securedrop/molecule/builder/.molecule/ansible_inventory.yml -n auto /home/t/Code/securedrop/molecule/builder/tests/test_ossec_packages.py /home/t/Code/securedrop/molecule/builder/tests/test_securedrop_deb_package.py /home/t/Code/securedrop/molecule/builder/tests/test_build_dependencies.py /home/t/Code/securedrop/molecule/builder/tests/test_legacy_paths.py
usage: py.test [options] [file_or_dir] [file_or_dir] [...]
py.test: error: unrecognized arguments: -n
  inifile: /home/t/Code/securedrop/setup.cfg
  rootdir: /home/t/Code/securedrop

[t2d]

Looks like this was introduced in 9cf90da during #2218

[ghost]

The -n option is introduced by pytest-xdist which should be installed when you ran pytest -r securedrop/requirements/develop-requirements.txt. If you have it installed already, could you pip list installed to show which version is available ?

[t2d]

Thank you for pointing this out. Guess I didn't take enough time to read the docs properly.