test_format: replace `skip` with `xfail`
```
E   AssertionError: '-13 18\' 60"' != '-13 19\' 0.0"'
E   - -13 18' 60"
E   ?      ^  ^
E   + -13 19' 0.0"
E   ?      ^  ^^
```
-
-import unittest
+import pytest
from geopy.format import format_degrees
from geopy.point import Point
-class TestFormat(unittest.TestCase):
-
- @unittest.skip("")
- def test_format(self):
- """
- format_degrees
- """
- self.assertEqual(
- format_degrees(Point.parse_degrees('-13', '19', 0)),
+@pytest.mark.xfail
+def test_format():
+ assert (
+ format_degrees(Point.parse_degrees('-13', '19', 0)) ==
"-13 19\' 0.0\""
)
