diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 00000000..0fa6f7fc
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,10 @@
+[run]
+branch = True
+source = docker
+
+[report]
+exclude_lines =
+    if __name__ == .__main__.:
+
+[html]
+directory = html
diff --git a/.gitignore b/.gitignore
index a74341f6..318f9eb3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,5 @@ dist
 *.swp
 
 .tox
+.coverage
+html/*
diff --git a/test-requirements.txt b/test-requirements.txt
index 5857671a..969f7a23 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1 +1,2 @@
-mock==1.0.1
\ No newline at end of file
+mock==1.0.1
+coverage==3.7.1
diff --git a/tox.ini b/tox.ini
index 8d46e8aa..77be5543 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,7 @@ skipsdist=True
 [testenv:py26]
 usedevelop=True
 commands =
-    {envpython} tests/test.py
+    {envbindir}/coverage run -p tests/test.py
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt
@@ -13,14 +13,18 @@ deps =
 [testenv:py27]
 usedevelop=True
 commands =
-    {envpython} tests/test.py
+    {envbindir}/coverage run -p tests/test.py
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt
+
 [testenv]
 usedevelop=True
 commands =
-    {envpython} tests/test.py
+    {envbindir}/coverage run -p tests/test.py
+    {envbindir}/coverage combine
+    {envbindir}/coverage report
+    {envbindir}/coverage html
 deps =
     -r{toxinidir}/requirements3.txt
     -r{toxinidir}/test-requirements.txt