tree 3919f25f7a20c7e3bb7ab5b3215b8827bd45d5f4
parent 7d1ee8e0072341c5d61034560d889450a5bf468f
author Benjamin Anderson <b@banjiewen.net> 1384654777 -0800
committer Benjamin Anderson <b@banjiewen.net> 1384655075 -0800

get_statistics_subset should return well-formatted null results

The existing code for handling lists of values that don't meet minimum
length causes problems when the `percentiles` key is used; e.g., rather
than the expected

    [{percentile, [{0.5, 0.0}, ... ]}]

the user is presented with

    [{{percentile, [0.5, ... ]}, 0.0}]

which doesn't match the formatting for other subset key. This patch
special-cases the `percentile` key to return the expected result.