def test_explain(get_dataframe):
"""
EventTableSubset.explain() method returns a string
"""
# Usually not a critical function, so let's simply test by
# asserting that it returns a string
sd = EventTableSubset(start="2016-01-01", stop="2016-01-02")
explain_string = sd.explain()
assert isinstance(explain_string, str)
assert isinstance(sd.explain(analyse=True), str)
def test_avoids_searching_extra_tables(get_dataframe):
"""
EventTableSubset query doesn't look in additional partitioned tables.
"""
sd = EventTableSubset(start="2016-01-01", stop="2016-01-02")
explain_string = sd.explain()
assert "calls_20160103" not in explain_string