class_docstr: Calls :meth:`orion.core.io.database.ephemeraldb.EphemeralDocument.select`.
docstr: Select field that does not exist and should return None.
docstr_tok: ["Select","field","that","does","not","exist","and","should","return","None","."]
code: def test_select_unexisting_field(self, document):
      """Select field that does not exist and should return None."""
      assert document.select({"idontexist": 1}) == {
          "_id": 1,
          "idontexist": None,
      }
  
imports: import pytest
  from orion.core.io.database import Database
  from orion.core.io.database.ephemeraldb import EphemeralCollection, EphemeralDB, EphemeralDocument
label_desc: Use image node_id 8 for calling the TestSelect obj's underlying member method code with example usage: obj.test_select_unexisting_field(document) without return types