class_docstr: Test shared LookupTable class.
class_docstr_tok: ["Test","shared","LookupTable","class","."]
code: def __init__(self):
      self._driver = None
      self._table = None
  
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 1 to create a new TestLookupTable object  with example: obj = TestLookupTable()