class_docstr: Test class for ParserBase classmethods
class_docstr_tok: ["Test","class","for","ParserBase","classmethods"]
docstr: ParserBase - Key Check, Loose Nested Schema
docstr_tok: ["ParserBase","-","Key","Check",",","Loose","Nested","Schema"]
code: def test_key_check_nested_loose(self):
      """ParserBase - Key Check, Loose Nested Schema"""
      schema = {"key": "string", "nested": {}}
      record = {"key": "value", "nested": {"key_01": 100}}
      assert_equal(ParserBase._key_check(record, schema), True)
  
imports: import json
  from mock import patch
  from nose.tools import assert_equal
  import streamalert.classifier.parsers
  from streamalert.classifier.parsers import ParserBase
label_desc: Use image node_id 22 for calling the TestParserBaseClassMethods obj's underlying member method code with example usage: obj.test_key_check_nested_loose() without return types