patch 8.0.1770: assert functions don't return anything commit https://github.com/vim/vim/commit/65a5464985f980d2bbbf4e14d39d416dce065ec7 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Apr 28 16:56:53 2018 +0200 patch 8.0.1770: assert functions don't return anything Problem: Assert functions don't return anything. Solution: Return non-zero when the assertion fails.

" Test 'autochdir' behavior

if !exists("+autochdir")
  finish
endif

func Test_set_filename()
  let cwd = getcwd()
  call test_autochdir()
  set acd
  new
  w samples/Xtest
  call assert_equal("Xtest", expand('%'))
  call assert_equal("samples", substitute(getcwd(), '.*/\(\k*\)', '\1', ''))
  bwipe!
  set noacd
  exe 'cd ' . cwd
  call delete('samples/Xtest')
endfunc