class_docstr: Test shared Alert class.
docstr: Alert Class - Compute Diff - Record Identical to Common
docstr_tok: ["Alert","Class","-","Compute","Diff","-","Record","Identical","to","Common"]
code: def test_compute_diff_no_diff(self):
      """Alert Class - Compute Diff - Record Identical to Common"""
      record = {"a": 1, "b": 2, "c": {"d": {"e": 3}}}
      common = record
      assert_equal({}, Alert._compute_diff(common, record))
  
imports: import copy
  from datetime import datetime, timedelta
  import json
  from nose.tools import assert_equal, assert_false, assert_is_instance, assert_not_in, assert_raises, assert_true
  from streamalert.shared.alert import Alert, AlertCreationError
label_desc: Use image node_id 31 for calling the TestAlert obj's underlying member method code with example usage: obj.test_compute_diff_no_diff() without return types