Catch.cmake: Support CMake multi-config with PRE_TEST discovery mode

[hkaelber]

Description

Support CMake multi-config generators with PRE_TEST discovery mode.
Cf. #2670 (comment)

GitHub Issues

[codecov]

Codecov Report

Merging #2739 (9b930ec) into devel (85eb465) will increase coverage by 0.03%.
Report is 15 commits behind head on devel.
The diff coverage is n/a.

@@            Coverage Diff             @@
##            devel    #2739      +/-   ##
==========================================
+ Coverage   91.32%   91.36%   +0.03%     
==========================================
  Files         192      190       -2     
  Lines        7850     7855       +5     
==========================================
+ Hits         7169     7176       +7     
+ Misses        681      679       -2     

[horenmar]

How far along is this?

[hkaelber]

How far along is this?

@horenmar, IMHO it's ready for review. I was hesitating, because of missing experience with the usage of multi-config targets. After re-reading the docs, made it finally work correctly. Could you pls review?

[horenmar]

I tested this with MSVC and it seems to work.

[horenmar]

This is fine to merge already, but I still have a question: is there a reason to do this like this (outside of consistency with the surrounding code), rather than either making the newlines part of the line-strings, or using multiline strings?

IIRC something like this would work as well and be simpler to read

set(ctest_include_multi_content [[
if(NOT CTEST_CONFIGURATION_TYPE)
  message("No configuration for testing specified, use '-C <cfg>'.")
else()
  include("C:/ubuntu/temp/discover-tests-tests/msvc-sln-1/tests-b12d07c_include-${CTEST_CONFIGURATION_TYPE}.cmake")
endif()
]])

[horenmar]

Right, the issue is that we want to interpret some of the variables, while [[]] does not do any interpretation. nevermind then