modules: Fix test command when library output path is set

[Squareys]

Hi @mosra !

This is a tiny one, but would help me with maintenance a bit if it were to be upstreamed :)

Best,
Jonathan

From the commit message:

E.g. when `LIBRARY_OUTPUT_PATH` is set globally or the target property
`LIBRARY_OUTPUT_DIRECTORY` is set.

add_test(<name> <command> <args>) does not resolve the target file, but
rather just runs the command, which works as long as it is where cmake
puts in by default, but not if the library output dir is modified.

add_test(NAME <name> COMMAND <command> <args>) on the other hand resolves
generator expressions and <command>, if an executable target, will
"automatically be replaced by the location of the executable created at
build time." (from the cmake docs.)

[mosra]

Unlike the above NAME signature no transformation is performed on the command-line to support target names or generator expressions.

cmake what the hell.

Can you add a changelog entry as well so I don't have to? :)

[Squareys]

Sure!

cmake what the hell.

That's documented, though :D

[mosra]

I mean, I see no reason at all why the shorthand version would need to behave so differently.

[codecov-io]

Codecov Report

Merging #77 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #77   +/-   ##
=======================================
  Coverage   97.76%   97.76%           
=======================================
  Files          86       86           
  Lines        5732     5732           
=======================================
  Hits         5604     5604           
  Misses        128      128

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[Squareys]

Done ✔️

[mosra]

Merged as 9298434, thanks!