diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_arguments.py b/tests/test_arguments.py
new file mode 100644
index 0000000..07bf5b1
--- /dev/null
+++ b/tests/test_arguments.py
@@ -0,0 +1,12 @@
+from subprocess import CalledProcessError
+import unittest
+
+class FirstTestClass(unittest.TestCase):
+
+  def test_argument_required(self):
+    import subprocess
+    with self.assertRaises(CalledProcessError):
+      subprocess.check_output(['python', 'manga_up'])
+
+if __name__ == '__main__':
+  unittest.main()
\ No newline at end of file