PYTHON-989 - Don't use unsatisfiable write concern in tests against non-replica sets.

Author: Luke Lovett

test/test_collection.py

@@ -1983,26 +1983,28 @@ def test_find_one_and_write_concern(self):
  results.clear()
 
  # Test write concern errors.
- c_wc_error = db.get_collection(
- 'test',
- write_concern=WriteConcern(w=len(client_context.nodes) + 1))
- self.assertRaises(
- WriteConcernError,
- c_wc_error.find_and_modify,
- {'_id': 1}, {'$set': {'foo': 'bar'}})
- self.assertRaises(
- WriteConcernError,
- c_wc_error.find_one_and_update,
- {'_id': 1}, {'$set': {'foo': 'bar'}})
- self.assertRaises(
- WriteConcernError,
- c_wc_error.find_one_and_replace,
- {'w': 0}, results['started'][0].command['writeConcern'])
- self.assertRaises(
- WriteConcernError,
- c_wc_error.find_one_and_delete,
- {'w': 0}, results['started'][0].command['writeConcern'])
- results.clear()
+ if client_context.is_rs:
+ c_wc_error = db.get_collection(
+ 'test',
+ write_concern=WriteConcern(
+ w=len(client_context.nodes) + 1))
+ self.assertRaises(
+ WriteConcernError,
+ c_wc_error.find_and_modify,
+ {'_id': 1}, {'$set': {'foo': 'bar'}})
+ self.assertRaises(
+ WriteConcernError,
+ c_wc_error.find_one_and_update,
+ {'_id': 1}, {'$set': {'foo': 'bar'}})
+ self.assertRaises(
+ WriteConcernError,
+ c_wc_error.find_one_and_replace,
+ {'w': 0}, results['started'][0].command['writeConcern'])
+ self.assertRaises(
+ WriteConcernError,
+ c_wc_error.find_one_and_delete,
+ {'w': 0}, results['started'][0].command['writeConcern'])
+ results.clear()
  else:
  c_w0.find_and_modify(
  {'_id': 1}, {'$set': {'foo': 'bar'}})