Employs pathlib interface in the tests

Author: funkyfuture

tests/test_autodocsumm.py

@@ -17,7 +17,7 @@
 See the License for the specific language governing permissions and
 limitations under the License.
 """
-import os.path as osp
+from pathlib import Path
 import re
 import bs4
 import pytest
@@ -37,8 +37,7 @@ def in_between(full, sub, s0, *others):
 
 
 def get_html(app, fname):
-    with open(osp.join(str(app.outdir), fname)) as f:
-        return f.read()
+    return (Path(app.outdir) / fname).read_text()
 
 
 def get_soup(app, fname):