[Boost-bugs] [Boost C++ Libraries] #12240: Documentation for data-driven testing should explictly mention std::tuple

Subject: [Boost-bugs] [Boost C++ Libraries] #12240: Documentation for data-driven testing should explictly mention std::tuple
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-05-31 14:09:03

#12240: Documentation for data-driven testing should explictly mention std::tuple
-------------------------------------------------+-------------------------
 Reporter:  Tony Lewis <tonyelewis@…>            |      Owner:  rogeeff
     Type:  Feature Requests                     |     Status:  new
Milestone:  To Be Determined                     |  Component:  test
  Version:  Boost 1.61.0                         |   Severity:
 Keywords:  test,tuple,data-                     |  Optimization
  driven,BOOST_DATA_TEST_CASE,std::tuple         |
-------------------------------------------------+-------------------------
 `BOOST_DATA_TEST_CASE()` handles ranges of `std::tuple`s differently to
 ranges of other types, in that it expects to be able to expand the parts
 of the tuples out to multiple variables. Whether or not this is intended
 or just a side-effect of the implementation, I think it's a sensible
 behaviour. Indeed, it's quite useful to be able to supply
 `BOOST_DATA_TEST_CASE()` with pre-zipped data rather than always having to
 use `^`.

 However at the moment, this special handling of `std::tuple` is not
 documented. Hence I suggest that this be included in the documentation
 (possibly near the "Zips" section) or otherwise that the implementation is
 changed so that users' ranges of `std::tuple`s are treated like ranges of
 other types (ie each tuple is expanded to one variable).

 Many thanks for your work on this library.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/12240>
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