Problem: Tests failing because there is no error for float to string
conversion.
Solution: Change the check for failure to check for correct result. Make
some conversions strict in Vim9 script.
3cfa5b16b0
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Hope this will make people using feed_command less likely: this hides bugs.
Already found at least two:
1. msgpackparse() will show internal error: hash_add() in case of duplicate
keys, though it will still work correctly. Currently silenced.
2. ttimeoutlen was spelled incorrectly, resulting in option not being set when
expected. Test was still functioning somehow though. Currently fixed.
It is otherwise impossible to determine which test failed sanitizer/valgrind
check. test/functional/helpers.lua module return was changed so that tests which
do not provide after_each function to get new check will automatically fail.
