diff --git a/‎tests/test_papermill.py‎
Lines changed: 14 additions & 0 deletions b/‎tests/test_papermill.py‎
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+import unittest
+
+import subprocess
+
+class TestPapermill(unittest.TestCase):
+    def test_papermill(self):
+        result = subprocess.run([
+            'papermill',
+            '/input/tests/data/notebook.ipynb',
+            '-',
+        ], stdout=subprocess.PIPE)
+
+        self.assertEqual(0, result.returncode)
+        self.assertTrue(b'999' in result.stdout)