Exclude the tests themselves from coverage!
diff --git a/.coveragerc b/.coveragerc
index 12579ab..dae3013 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -2,4 +2,4 @@
 branch = True
 source = codespell_lib
 include = */codespell_lib/*
-omit =
+omit = */codespell_lib/tests/*