 b/tests/data/test_airway.py
+import unittest
+from inmoose.data.airway import airway
+class Test(unittest.TestCase):
+    def test_airway(self):
+        """
+        check that the airway dataset is properly loaded
+        """
+        adata = airway()
+        self.assertEqual(adata.shape, (8, 64102))
+        self.assertEqual(len(adata.obs.columns), 9)