Add a test utility functions to read & process NIST vector files
diff --git a/tox.ini b/tox.ini
index 5d214bd..81c6675 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,7 @@
 
 [testenv]
 deps = pytest-cov
-commands = py.test --cov=cryptography/
+commands = py.test --cov=cryptography/ --cov=tests/
 
 [testenv:docs]
 deps = sphinx
@@ -13,4 +13,5 @@
 
 [testenv:pep8]
 deps = flake8
-commands = flake8 cryptography/ tests/ docs/
+# E128 continuation line under-indented for visual indent
+commands = flake8 --ignore="E128" cryptography/ tests/ docs/