Testcase for import check

[jzpang]

Is your feature request related to a problem? Please describe.
There are some processors that have no testcase for import check. Add testcase accordingly.

elastic_search_index_processor.py
elastic_search_processor.py
elastic_search_query_creator.py
twittersearch_processor.py

Describe the solution you'd like
A clear and concise description of what you want to happen.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.