class_docstr: Tests for host discovery script in horovod.elastic.
code: def __init__(self, *args, **kwargs):
      super(HostDiscoveryScriptTests, self).__init__(*args, **kwargs)
  
file_path: horovod/test/single/test_elastic_discovery.py
imports: import unittest
  import mock
  from parameterized import parameterized
  from horovod.runner.elastic.discovery import HostDiscoveryScript
label_desc: Use image node_id 1 to create a new HostDiscoveryScriptTests object from inherited base classes: unittest with example: obj = HostDiscoveryScriptTests()