code coverage

.gitignore

@@ -5,6 +5,7 @@ dist/
 .cache/
 .eggs/
 .ipynb_checkpoints/
+.coverage
 *.egg-info/
 *.so
 *.aux

setup.cfg

@@ -2,4 +2,4 @@
 test=pytest
 
 [tool:pytest]
-addopts = --capture=no
+addopts = --capture=no --cov

setup.py

@@ -5,7 +5,7 @@ import build  # noqa
 
 install_requires = ['cffi']
 setup_requires = ['pytest-runner', 'cffi']
-tests_require = ['pytest']
+tests_require = ['pytest', 'pytest-cov']
 docs_require = ['Sphinx', 'sphinx_rtd_theme']
 
 setup(