src/testdir/test_system.vim

" Tests for system() and systemlist()

function! Test_System()
  if !executable('echo') || !executable('cat') || !executable('wc')
    return
  endif
  let out = system('echo 123')
  " On Windows we may get a trailing space.
  if out != "123 \n"
    call assert_equal("123\n", out)
  endif

  let out = systemlist('echo 123')
  " On Windows we may get a trailing space and CR.
  if out != ["123 \r"]
    call assert_equal(['123'], out)
  endif

  call assert_equal('123',   system('cat', '123'))
  call assert_equal(['123'], systemlist('cat', '123'))
  call assert_equal(["as\<NL>df"], systemlist('cat', ["as\<NL>df"]))

  new Xdummy
  call setline(1, ['asdf', "pw\<NL>er", 'xxxx'])
  let out = system('wc -l', bufnr('%'))
  " On OS/X we get leading spaces
  let out = substitute(out, '^ *', '', '')
  call assert_equal("3\n", out)

  let out = systemlist('wc -l', bufnr('%'))
  " On Windows we may get a trailing CR.
  if out != ["3\r"]
    " On OS/X we get leading spaces
    if type(out) == v:t_list
      let out[0] = substitute(out[0], '^ *', '', '')
    endif
    call assert_equal(['3'],  out)
  endif

  let out = systemlist('cat', bufnr('%'))
  " On Windows we may get a trailing CR.
  if out != ["asdf\r", "pw\<NL>er\r", "xxxx\r"]
    call assert_equal(['asdf', "pw\<NL>er", 'xxxx'],  out)
  endif
  bwipe!

  call assert_fails('call system("wc -l", 99999)', 'E86:')
endfunction

function! Test_system_exmode()
  if has('unix') " echo $? only works on Unix
    let cmd = ' -es -u NONE -c "source Xscript" +q; echo $?'
    " Need to put this in a script, "catch" isn't found after an unknown
    " function.
    call writefile(['try', 'call doesnotexist()', 'catch', 'endtry'], 'Xscript')
    let a = system(v:progpath . cmd)
    call assert_equal('0', a[0])
    call assert_equal(0, v:shell_error)
  endif

  " Error before try does set error flag.
  call writefile(['call nosuchfunction()', 'try', 'call doesnotexist()', 'catch', 'endtry'], 'Xscript')
  if has('unix') " echo $? only works on Unix
    let a = system(v:progpath . cmd)
    call assert_notequal('0', a[0])
  endif

  let cmd = ' -es -u NONE -c "source Xscript" +q'
  let a = system(v:progpath . cmd)
  call assert_notequal(0, v:shell_error)
  call delete('Xscript')

  if has('unix') " echo $? only works on Unix
    let cmd = ' -es -u NONE -c "call doesnotexist()" +q; echo $?'
    let a = system(v:progpath. cmd)
    call assert_notequal(0, a[0])
  endif

  let cmd = ' -es -u NONE -c "call doesnotexist()" +q'
  let a = system(v:progpath. cmd)
  call assert_notequal(0, v:shell_error)

  if has('unix') " echo $? only works on Unix
    let cmd = ' -es -u NONE -c "call doesnotexist()|let a=1" +q; echo $?'
    let a = system(v:progpath. cmd)
    call assert_notequal(0, a[0])
  endif

  let cmd = ' -es -u NONE -c "call doesnotexist()|let a=1" +q'
  let a = system(v:progpath. cmd)
  call assert_notequal(0, v:shell_error)
endfunc