" Test for python 3 commands.
" TODO: move tests from test87.in here.

source check.vim
CheckFeature python3

func Test_py3do()
  " Check deleting lines does not trigger an ml_get error.
  py3 import vim
  new
  call setline(1, ['one', 'two', 'three'])
  py3do vim.command("%d_")
  bwipe!

  " Check switching to another buffer does not trigger an ml_get error.
  new
  let wincount = winnr('$')
  call setline(1, ['one', 'two', 'three'])
  py3do vim.command("new")
  call assert_equal(wincount + 1, winnr('$'))
  bwipe!
  bwipe!
endfunc

func Test_set_cursor()
  " Check that setting the cursor position works.
  py3 import vim
  new
  call setline(1, ['first line', 'second line'])
  normal gg
  py3do vim.current.window.cursor = (1, 5)
  call assert_equal([1, 6], [line('.'), col('.')])

  " Check that movement after setting cursor position keeps current column.
  normal j
  call assert_equal([2, 6], [line('.'), col('.')])
endfunc

func Test_vim_function()
  " Check creating vim.Function object
  py3 import vim

  func s:foo()
    return matchstr(expand('<sfile>'), '<SNR>\zs\d\+_foo$')
  endfunc
  let name = '<SNR>' . s:foo()

  try
    py3 f = vim.bindeval('function("s:foo")')
    call assert_equal(name, py3eval('f.name'))
  catch
    call assert_false(v:exception)
  endtry

  try
    py3 f = vim.Function(b'\x80\xfdR' + vim.eval('s:foo()').encode())
    call assert_equal(name, 'f.name'->py3eval())
  catch
    call assert_false(v:exception)
  endtry

  py3 del f
  delfunc s:foo
endfunc

func Test_skipped_python3_command_does_not_affect_pyxversion()
  set pyxversion=0
  if 0
    python3 import vim
  endif
  call assert_equal(0, &pyxversion)  " This assertion would have failed with Vim 8.0.0251. (pyxversion was introduced in 8.0.0251.)
endfunc

func _SetUpHiddenBuffer()
  py3 import vim
  new
  edit hidden
  setlocal bufhidden=hide

  enew
  let lnum = 0
  while lnum < 10
    call append( 1, string( lnum ) )
    let lnum = lnum + 1
  endwhile
  normal G

  call assert_equal( line( '.' ), 11 )
endfunc

func _CleanUpHiddenBuffer()
  bwipe! hidden
  bwipe!
endfunc

func Test_Write_To_HiddenBuffer_Does_Not_Fix_Cursor_Clear()
  call _SetUpHiddenBuffer()
  py3 vim.buffers[ int( vim.eval( 'bufnr("hidden")' ) ) ][:] = None
  call assert_equal( line( '.' ), 11 )
  call _CleanUpHiddenBuffer()
endfunc

func Test_Write_To_HiddenBuffer_Does_Not_Fix_Cursor_List()
  call _SetUpHiddenBuffer()
  py3 vim.buffers[ int( vim.eval( 'bufnr("hidden")' ) ) ][:] = [ 'test' ]
  call assert_equal( line( '.' ), 11 )
  call _CleanUpHiddenBuffer()
endfunc

func Test_Write_To_HiddenBuffer_Does_Not_Fix_Cursor_Str()
  call _SetUpHiddenBuffer()
  py3 vim.buffers[ int( vim.eval( 'bufnr("hidden")' ) ) ][0] = 'test'
  call assert_equal( line( '.' ), 11 )
  call _CleanUpHiddenBuffer()
endfunc

func Test_Write_To_HiddenBuffer_Does_Not_Fix_Cursor_ClearLine()
  call _SetUpHiddenBuffer()
  py3 vim.buffers[ int( vim.eval( 'bufnr("hidden")' ) ) ][0] = None
  call assert_equal( line( '.' ), 11 )
  call _CleanUpHiddenBuffer()
endfunc

func _SetUpVisibleBuffer()
  py3 import vim
  new
  let lnum = 0
  while lnum < 10
    call append( 1, string( lnum ) )
    let lnum = lnum + 1
  endwhile
  normal G
  call assert_equal( line( '.' ), 11 )
endfunc

func Test_Write_To_Current_Buffer_Fixes_Cursor_Clear()
  call _SetUpVisibleBuffer()

  py3 vim.current.buffer[:] = None
  call assert_equal( line( '.' ), 1 )

  bwipe!
endfunc

func Test_Write_To_Current_Buffer_Fixes_Cursor_List()
  call _SetUpVisibleBuffer()

  py3 vim.current.buffer[:] = [ 'test' ]
  call assert_equal( line( '.' ), 1 )

  bwipe!
endfunction

func Test_Write_To_Current_Buffer_Fixes_Cursor_Str()
  call _SetUpVisibleBuffer()

  py3 vim.current.buffer[-1] = None
  call assert_equal( line( '.' ), 10 )

  bwipe!
endfunction

func Test_Catch_Exception_Message()
  try
    py3 raise RuntimeError( 'TEST' )
  catch /.*/
    call assert_match( '^Vim(.*):RuntimeError: TEST$', v:exception )
  endtry
endfunc

func Test_unicode()
  " this crashed Vim once
  if &tenc != ''
    throw "Skipped: 'termencoding' is not empty"
  endif

  set encoding=utf32
  py3 print('hello')

  if !has('win32')
    set encoding=debug
    py3 print('hello')

    set encoding=euc-tw
    py3 print('hello')
  endif

  set encoding=utf8
endfunc

" Test range objects, see :help python-range
func Test_python3_range()
  new
  py3 b = vim.current.buffer

  call setline(1, range(1, 6))
  py3 r = b.range(2, 4)
  call assert_equal(6, py3eval('len(b)'))
  call assert_equal(3, py3eval('len(r)'))
  call assert_equal('3', py3eval('b[2]'))
  call assert_equal('4', py3eval('r[2]'))

  call assert_fails('py3 r[3] = "x"', 'IndexError: line number out of range')
  call assert_fails('py3 x = r[3]', 'IndexError: line number out of range')
  call assert_fails('py3 r["a"] = "x"', 'TypeError')
  call assert_fails('py3 x = r["a"]', 'TypeError')

  py3 del r[:]
  call assert_equal(['1', '5', '6'], getline(1, '$'))

  %d | call setline(1, range(1, 6))
  py3 r = b.range(2, 5)
  py3 del r[2]
  call assert_equal(['1', '2', '3', '5', '6'], getline(1, '$'))

  %d | call setline(1, range(1, 6))
  py3 r = b.range(2, 4)
  py3 vim.command("%d,%dnorm Ax" % (r.start + 1, r.end + 1))
  call assert_equal(['1', '2x', '3x', '4x', '5', '6'], getline(1, '$'))

  %d | call setline(1, range(1, 4))
  py3 r = b.range(2, 3)
  py3 r.append(['a', 'b'])
  call assert_equal(['1', '2', '3', 'a', 'b', '4'], getline(1, '$'))
  py3 r.append(['c', 'd'], 0)
  call assert_equal(['1', 'c', 'd', '2', '3', 'a', 'b', '4'], getline(1, '$'))

  %d | call setline(1, range(1, 5))
  py3 r = b.range(2, 4)
  py3 r.append('a')
  call assert_equal(['1', '2', '3', '4', 'a', '5'], getline(1, '$'))
  py3 r.append('b', 1)
  call assert_equal(['1', '2', 'b', '3', '4', 'a', '5'], getline(1, '$'))

  bwipe!
endfunc