def test_resolution_must_be_number(self):
pdb = Pdb()
with self.assertRaises(TypeError):
pdb.resolution = "100"
pdb.resolution = 3
def test_can_update_resolution(self):
pdb = Pdb()
pdb._resolution = 1.2
pdb.resolution = 1.5
self.assertEqual(pdb._resolution, 1.5)