enable order for custom data source

[mkangia]

https://dimagi-dev.atlassian.net/browse/ICDS-1237

SUMMARY

We added a custom report for ICDS but didn't allow it to include order clause, this adds that.

PRODUCT DESCRIPTION

Report should be sorted with the column configured

Query being run now

In [2]: data_source.data_source.get_query_strings()
Out[2]: 'SELECT sum(CASE WHEN female_death_type IS NOT NULL AND female_death_type != \'\' AND age_at_death_yrs >= :p5ee5e5109b7
64a59a6d5ecf6a7343d4c THEN :param_1 ELSE :param_2 END) AS dead_preg_count, name AS name, age_at_death_yrs AS age_at_death_yrs,
female_death_type AS female_death_type, resident AS resident, date_death AS date_death, doc_id AS doc_id, supervisor_id AS supe
rvisor_id \nFROM "ucr_icds-cas_static-person_cases_v3_2ae0879a" GROUP BY doc_id, supervisor_id ORDER BY date_death DESC'

[czue]

thanks! a test would be nice if not too hard.

[mkangia]

@czue i would be happy to add if there is already some setup of such custom data source i can build on, can you link me to tests already present for this?
i tried finding usages of the classes but could not find any in tests, and the way the test files are named, which are many i can't point to where it should be.

[czue]

hmm, given that I didn't include any tests with the original PR (shame!) I imagine there isn't an easy test you can copy/latch on to.