GradeTest on Windows

[Tarmean]

Running gradle tests uses ./gradlew if the file exists, or gradle otherwise.

On windows with the default &shell=cmd.exe this leads to a cryptic

'.' is not recognized as an internal or external command,
operable program or batch file.

This is because cmd.exe uses the current directory by default and gets confused by the ./.
The relevant lines are

https://github.com/vim-test/vim-test/blob/master/autoload/test/java/gradletest.vim#L114
https://github.com/vim-test/vim-test/blob/master/autoload/test/kotlin/gradletest.vim#L67

An explicit check fixes the error but is a tad ugly:

function! test#java#gradletest#executable() abort
  if findfile('gradlew') ==# 'gradlew'
      if &shell =~? "cmd.exe$"
          return 'gradlew test'
      else
          return './gradlew test'
      endif
  else
      return 'gradle test'
  endif
endfunction

Is there some existing pattern to handle this problem in other test types?

[codeinabox]

Thank you for spotting this, does the issue just occur with Kotlin or other test runners?