Run coverage measurements while testing.

pyproject.toml

@@ -68,6 +68,7 @@ pytest = "^5.3"
 pytest-django = "^3.7"
 pytest-django-testing-postgresql = "^0.1"
 tox = "^3.14"
+pytest-cov = "^2.8"
 
 [build-system]
 requires = ["poetry>=0.12"]

tox.ini

@@ -5,7 +5,7 @@ skipsdist = True
 whitelist_externals = poetry
     pytest
 skip_install = true
-commands = pytest --pylama biscuit/core/
+commands = pytest --pylama --cov=biscuit biscuit/core/
 
 [pylama]
 linters = pycodestyle,pyflakes,radon
@@ -26,3 +26,7 @@ django_settings_module = biscuit.core.settings
 
 [pytest]
 DJANGO_SETTINGS_MODULE = biscuit.core.settings
+
+[coverage:run]
+omit = */migrations/*
+    */tests/*