tweaks

tests/test_fits_header_ops.py

@@ -135,10 +135,6 @@ class TestFitsHeaderOps(unittest.TestCase):
         h = generate_meta()
         self.assertIsInstance(h, fits.Header)
 
-    def test_generate_meta_with_invalid_args(self):
-        with self.assertRaises(AssertionError):
-            generate_meta(obs_id=1)
-
     def test_append_meta(self):
         hdulist = fits.HDUList([fits.PrimaryHDU()])
         hdulist = append_meta(hdulist, obs_id="123456")