Measure test coverage

Author: hugovk

.coveragerc

@@ -0,0 +1,7 @@
+# .coveragerc to control coverage.py
+
+[report]
+# Regexes for lines to exclude from consideration
+exclude_also =
+    # Don't complain if non-runnable code isn't run:
+    if __name__ == .__main__.:

tox.ini

@@ -12,8 +12,19 @@ skip_install = true
 deps =
     -r requirements.txt
     pytest
+    pytest-cov
+pass_env =
+    FORCE_COLOR
+set_env =
+    COVERAGE_CORE = sysmon
 commands =
-    {envpython} -m pytest {posargs}
+    {envpython} -m pytest \
+      --cov . \
+      --cov tests \
+      --cov-report html \
+      --cov-report term \
+      --cov-report xml \
+      {posargs}
 
 [testenv:lint]
 skip_install = true