call airline#init#bootstrap()

function! Util1()
  let g:count += 1
endfunction

function! Util2()
  let g:count += 2
endfunction

function! Util3(...)
  let g:count = a:0
endfunction

Describe util
  Before each
    let g:count = 0
  End

  It has append wrapper function
    Assert Equals(airline#util#append('', 0), '')
    Assert Equals(airline#util#append('1', 0), '   1')
  End

  It should be same &columns
    let g:airline_statusline_ontop = 1
    Assert Equals(airline#util#winwidth(), &columns)
  End

  It should be same winwidth(0)
    let g:airline_statusline_ontop = 0
    Assert Equals(airline#util#winwidth(), winwidth(0))
  End

  It should be same winwidth(30)
    Assert Equals(airline#util#winwidth(30, 0), winwidth(30))
  End

  It has prepend wrapper function
    Assert Equals(airline#util#prepend('', 0), '')
    Assert Equals(airline#util#prepend('1', 0), '1  ')
  End

  It has getwinvar function
    Assert Equals(airline#util#getwinvar(1, 'asdf', '123'), '123')
    call setwinvar(1, 'vspec', 'is cool')
    Assert Equals(airline#util#getwinvar(1, 'vspec', ''), 'is cool')
  End

  It has exec funcrefs helper functions
    call airline#util#exec_funcrefs([function('Util1'), function('Util2')])
    Assert Equals(g:count, 3)

    call airline#util#exec_funcrefs([function('Util3')], 1, 2, 3, 4)
    Assert Equals(g:count, 4)
  End

  It should ignore minwidth if less than 0
    Assert Equals(airline#util#append('foo', -1), '   foo')
    Assert Equals(airline#util#prepend('foo', -1), 'foo  ')
    Assert Equals(airline#util#wrap('foo', -1), 'foo')
  End

  It should return empty if winwidth() > minwidth
    Assert Equals(airline#util#append('foo', 99999), '')
    Assert Equals(airline#util#prepend('foo', 99999), '')
    Assert Equals(airline#util#wrap('foo', 99999), '')
  End
End