TST: Condense tests in test_interval_new.py and add new test based on TODO#23275

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jreback merged 1 commit intopandas-dev:masterfrom

jschendel:ii-new-tests-clean

Oct 23, 2018

Commits on Oct 22, 2018

TST: Condense tests in test_interval_new.py and add new test based on TODO
jschendel
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