Measure test coverage

Author: hugovk

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