class_docstr: Test shared LookupTable class.
class_docstr_tok: ["Test","shared","LookupTable","class","."]
docstr: LookupTable - Basic Table - Existent
docstr_tok: ["LookupTable","-","Basic","Table","-","Existent"]
code: def test_table_existent(self):
      """LookupTable - Basic Table - Existent"""
      assert_equal(self._table.get("this", "?"), "that")
  
file_path: streamalert/tests/unit/streamalert/shared/lookup_tables/test_table.py
imports: from nose.tools import assert_equal
  from streamalert.shared.lookup_tables.drivers_factory import construct_persistence_driver
  from streamalert.shared.lookup_tables.table import LookupTable
label_desc: Use image node_id 5 for calling the TestLookupTable obj's underlying member method code with example usage: obj.test_table_existent() without return types