diff --git a/.arcanist-extensions b/.arcanist-extensions
new file mode 160000
index 0000000..bd24636
--- /dev/null
+++ b/.arcanist-extensions
@@ -0,0 +1 @@
+Subproject commit bd2463671edf8b8b385c095b27a5ebeef7466a5d
diff --git a/.arcconfig b/.arcconfig
new file mode 100644
index 0000000..945ae9e
--- /dev/null
+++ b/.arcconfig
@@ -0,0 +1,8 @@
+{
+  "load": [
+    ".arcanist-extensions/tap_test_engine"
+  ],
+
+  "unit.engine": "TAPTestEngine",
+  "unit.engine.tap.command": "./test.py"
+}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f486e7f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+*.swp
+.cache
+__pycache__
+*.pyc
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..2188725
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule ".arcanist-extensions"]
+	path = .arcanist-extensions
+	url = https://github.com/tagview/arcanist-extensions.git
diff --git a/README.md b/README.md
index d2c739c..03027cb 100644
--- a/README.md
+++ b/README.md
@@ -1,30 +1,33 @@
+Install tappy:
+ pip install tap.py
+
 Build status ?
 [Build Status](https://jenkins.c4science.ch/buildStatus/icon?job=gromacs)
 
 # Header 1
 
 ## Header 2
 
 ### Header 3
 
 # test
 # test
 # test
 
 test
 TEST
 TEST
 TEST
 TEST
 TEST
 TEST
 TEST
 
 [c4science](https://c4science.ch)
 
 {F54607}
 
 NEW FEATURE
 NEW FEATURE
 TEST
 TEST
diff --git a/python.py b/python.py
index 3f44cee..799ca25 100755
--- a/python.py
+++ b/python.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
 
-print "test"
-pint "test"
+def myfunc():
+    return "test"
+
diff --git a/test.py b/test.py
new file mode 100755
index 0000000..88e2963
--- /dev/null
+++ b/test.py
@@ -0,0 +1,12 @@
+#!/usr/bin/env python2
+import unittest, pytest
+import python as p
+
+class Test(unittest.TestCase):
+
+    def test_return(self):
+	self.assertTrue(p.myfunc() == 'test')
+	self.assertTrue(p.myfunc() != 'test')
+
+if __name__ == '__main__':
+    pytest.main(['./test.py', '--tap-stream'])