Disable false-positive linter error (#469)

* Disable false-positive linter error

The build has been failing recently with a false positive linter error.
Pylint was complaining that a method is not callable, even though
the method is defined right on the following line.

As I could not find either the reason pylint was failing or a
solution that resolves this issue, this commit disables the check for
that specific line pylint was failing on.

* Fix assertions for non-partitioned db

* Pin pylint version

Author: bessbd

src/cloudant/feed.py

@@ -144,7 +144,7 @@ def __next__(self):
         """
         Provides Python3 compatibility.
         """
-        return self.next()
+        return self.next()  # pylint: disable=not-callable
 
     def next(self):
         """

test-requirements.txt

@@ -2,5 +2,5 @@ mock==1.3.0
 nose
 sphinx
 sphinx_rtd_theme
-pylint
+pylint==2.5.2
 flaky

tests/unit/design_document_tests.py

@@ -390,7 +390,8 @@ def test_fetch_dbcopy(self):
         # before comparison also. Compare the removed values with
         # the expected content in each case.
         self.assertEqual(db_copy, ddoc['views']['view002'].pop('dbcopy'))
-        self.assertEqual({'epi': {'dbcopy': {'view002': db_copy}}}, ddoc_remote.pop('options'))
+        self.assertEqual({'epi': {'dbcopy': {'view002': db_copy}}, 'partitioned': False}, ddoc_remote.pop('options'))
+        self.assertEqual({'partitioned': False}, ddoc.pop('options'))
         self.assertEqual(ddoc_remote, ddoc)
         self.assertTrue(ddoc_remote['_rev'].startswith('1-'))
         self.assertEqual(ddoc_remote, {
@@ -1553,7 +1554,8 @@ def test_geospatial_index(self):
             'indexes': {},
             'views': {},
             'lists': {},
-            'shows': {}
+            'shows': {},
+            'options': {'partitioned': False}
         })
         # Document with geospatial point
         geodoc = Document(self.db, 'doc001')