neovim

test_listdict.vim (49567B)

---

" Tests for the List and Dict types
scriptencoding utf-8

source vim9.vim

func TearDown()
 " Run garbage collection after every test
 call test_garbagecollect_now()
endfunc

" Tests for List type

" List creation
func Test_list_create()
 " Creating List directly with different types
 let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
 call assert_equal("[1, 'as''d', [1, 2, function('strlen')], {'a': 1}]", string(l))
 call assert_equal({'a' : 1}, l[-1])
 call assert_equal(1, l[-4])
 let x = 10
 try
   let x = l[-5]
 catch
   call assert_match('E684:', v:exception)
 endtry
 call assert_equal(10, x)
endfunc

" This was allowed in legacy Vim script
let s:list_with_spaces = [1 , 2 , 3]

" List slices
func Test_list_slice()
 let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
 call assert_equal([1, 'as''d', [1, 2, function('strlen')], {'a': 1}], l[:])
 call assert_equal(['as''d', [1, 2, function('strlen')], {'a': 1}], l[1:])
 call assert_equal([1, 'as''d', [1, 2, function('strlen')]], l[:-2])
 call assert_equal([1, 'as''d', [1, 2, function('strlen')], {'a': 1}], l[0:8])
 call assert_equal([], l[8:-1])
 call assert_equal([], l[0:-10])
 " perform an operation on a list slice
 let l = [1, 2, 3]
 let l[:1] += [1, 2]
 let l[2:] -= [1]
 call assert_equal([2, 4, 2], l)

 let lines =<< trim END
     VAR l = [1, 2]
     call assert_equal([1, 2], l[:])
     call assert_equal([2], l[-1 : -1])
     call assert_equal([1, 2], l[-2 : -1])
 END
 call CheckLegacyAndVim9Success(lines)

 let l = [1, 2]
 call assert_equal([], l[-3 : -1])

 let lines =<< trim END
     var l = [1, 2]
     assert_equal([1, 2], l[-3 : -1])
 END
 call CheckDefAndScriptSuccess(lines)

 call assert_fails('let l[[]] = 1', 'E730: Using a List as a String')
 call assert_fails('let l[1 : []] = [1]', 'E730: Using a List as a String')
endfunc

" List identity
func Test_list_identity()
 let lines =<< trim END
     VAR l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
     VAR ll = l
     VAR lx = copy(l)
     call assert_true(l == ll)
     call assert_false(l isnot ll)
     call assert_true(l is ll)
     call assert_true(l == lx)
     call assert_false(l is lx)
     call assert_true(l isnot lx)
 END
 call CheckLegacyAndVim9Success(lines)
endfunc

" removing items with :unlet
func Test_list_unlet()
 let lines =<< trim END
     VAR l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
     unlet l[2]
     call assert_equal([1, 'as''d', {'a': 1}], l)
     LET l = range(8)
     unlet l[: 3]
     unlet l[1 :]
     call assert_equal([4], l)

     #" removing items out of range: silently skip items that don't exist
     LET l = [0, 1, 2, 3]
     unlet l[2 : 2]
     call assert_equal([0, 1, 3], l)
     LET l = [0, 1, 2, 3]
     unlet l[2 : 3]
     call assert_equal([0, 1], l)
     LET l = [0, 1, 2, 3]
     unlet l[2 : 4]
     call assert_equal([0, 1], l)
     LET l = [0, 1, 2, 3]
     unlet l[2 : 5]
     call assert_equal([0, 1], l)
     LET l = [0, 1, 2, 3]
     unlet l[-2 : 2]
     call assert_equal([0, 1, 3], l)
     LET l = [0, 1, 2, 3]
     unlet l[-3 : 2]
     call assert_equal([0, 3], l)
     LET l = [0, 1, 2, 3]
     unlet l[-4 : 2]
     call assert_equal([3], l)
     LET l = [0, 1, 2, 3]
     unlet l[-5 : 2]
     call assert_equal([3], l)
     LET l = [0, 1, 2, 3]
     unlet l[-6 : 2]
     call assert_equal([3], l)
 END
 call CheckLegacyAndVim9Success(lines)

 let l = [0, 1, 2, 3]
 unlet l[2:2]
 call assert_equal([0, 1, 3], l)
 let l = [0, 1, 2, 3]
 unlet l[2:3]
 call assert_equal([0, 1], l)

 let lines =<< trim END
     VAR l = [0, 1, 2, 3]
     unlet l[2 : 1]
 END
 call CheckLegacyAndVim9Failure(lines, 'E684:')

 let lines =<< trim END
     VAR l = [0, 1, 2, 3]
     unlet l[-1 : 2]
 END
 call CheckLegacyAndVim9Failure(lines, 'E684:')
endfunc

" assignment to a list
func Test_list_assign()
 let lines =<< trim END
     VAR l = [0, 1, 2, 3]
     VAR va = 0
     VAR vb = 0
     LET [va, vb] = l[2 : 3]
     call assert_equal([2, 3], [va, vb])
 END
 call CheckLegacyAndVim9Success(lines)

 let lines =<< trim END
     let l = [0, 1, 2, 3]
     let [va, vb] = l
 END
 call CheckScriptFailure(lines, 'E687:')
 let lines =<< trim END
     var l = [0, 1, 2, 3]
     var va = 0
     var vb = 0
     [va, vb] = l
 END
 call CheckScriptFailure(['vim9script'] + lines, 'E687:')
 call CheckDefExecFailure(lines, 'E1093: Expected 2 items but got 4')

 let lines =<< trim END
     let l = [0, 1, 2, 3]
     let [va, vb] = l[1:1]
 END
 call CheckScriptFailure(lines, 'E688:')
 let lines =<< trim END
     var l = [0, 1, 2, 3]
     var va = 0
     var vb = 0
     [va, vb] = l[1 : 1]
 END
 call CheckScriptFailure(['vim9script'] + lines, 'E688:')
 call CheckDefExecFailure(lines, 'E1093: Expected 2 items but got 1')

 let lines =<< trim END
   VAR l = [2]
   LET l += v:_null_list
   call assert_equal([2], l)
   LET l = v:_null_list
   LET l += [1]
   call assert_equal([1], l)
 END
 call CheckLegacyAndVim9Success(lines)

 let d = {'abc': [1, 2, 3]}
 call assert_fails('let d.abc[0:0z10] = [10, 20]', 'E976: Using a Blob as a String')
endfunc

" test for range assign
func Test_list_range_assign()
 let lines =<< trim END
     VAR l = [0]
     LET l[:] = [1, 2]
     call assert_equal([1, 2], l)
     LET l[-4 : -1] = [5, 6]
     call assert_equal([5, 6], l)
 END
 call CheckLegacyAndVim9Success(lines)

 let lines =<< trim END
   var l = [7]
   l[:] = ['text']
 END
 call CheckDefAndScriptFailure(lines, 'E1012:', 2)
endfunc

func Test_list_items()
 let r = []
 let l = ['a', 'b', 'c']
 for [idx, val] in items(l)
   call extend(r, [[idx, val]])
 endfor
 call assert_equal([[0, 'a'], [1, 'b'], [2, 'c']], r)

 call assert_fails('call items(3)', 'E1225:')
endfunc

func Test_string_items()
 let r = []
 let s = 'ábツ'
 for [idx, val] in items(s)
   call extend(r, [[idx, val]])
 endfor
 call assert_equal([[0, 'á'], [1, 'b'], [2, 'ツ']], r)
endfunc

" Test removing items in list
func Test_list_func_remove()
 let lines =<< trim END
     #" Test removing 1 element
     VAR l = [1, 2, 3, 4]
     call assert_equal(1, remove(l, 0))
     call assert_equal([2, 3, 4], l)

     LET l = [1, 2, 3, 4]
     call assert_equal(2, remove(l, 1))
     call assert_equal([1, 3, 4], l)

     LET l = [1, 2, 3, 4]
     call assert_equal(4, remove(l, -1))
     call assert_equal([1, 2, 3], l)

     #" Test removing range of element(s)
     LET l = [1, 2, 3, 4]
     call assert_equal([3], remove(l, 2, 2))
     call assert_equal([1, 2, 4], l)

     LET l = [1, 2, 3, 4]
     call assert_equal([2, 3], remove(l, 1, 2))
     call assert_equal([1, 4], l)

     LET l = [1, 2, 3, 4]
     call assert_equal([2, 3], remove(l, -3, -2))
     call assert_equal([1, 4], l)
 END
 call CheckLegacyAndVim9Success(lines)

 " Test invalid cases
 let l = [1, 2, 3, 4]
 call assert_fails("call remove(l, 5)", 'E684:')
 call assert_fails("call remove(l, 1, 5)", 'E684:')
 call assert_fails("call remove(l, 3, 2)", 'E16:')
 call assert_fails("call remove(1, 0)", 'E896:')
 call assert_fails("call remove(l, l)", 'E745:')
endfunc

" List add() function
func Test_list_add()
 let lines =<< trim END
     VAR l = []
     call add(l, 1)
     call add(l, [2, 3])
     call add(l, [])
     call add(l, v:_null_list)
     call add(l, {'k': 3})
     call add(l, {})
     call add(l, v:_null_dict)
     call assert_equal([1, [2, 3], [], [], {'k': 3}, {}, {}], l)
 END
 call CheckLegacyAndVim9Success(lines)

 " weird legacy behavior
 " call assert_equal(1, add(v:_null_list, 4))
endfunc

" Tests for Dictionary type

func Test_dict()
 " Creating Dictionary directly with different types
 let lines =<< trim END
     VAR d = {'1': 'asd', 'b': [1, 2, function('strlen')], '-1': {'a': 1}, }
     call assert_equal("{'1': 'asd', 'b': [1, 2, function('strlen')], '-1': {'a': 1}}", string(d))
     call assert_equal('asd', d.1)
     call assert_equal(['-1', '1', 'b'], sort(keys(d)))
     call assert_equal(['asd', [1, 2, function('strlen')], {'a': 1}], values(d))
     call extend(d, {3: 33, 1: 99})
     call extend(d, {'b': 'bbb', 'c': 'ccc'}, "keep")
     call assert_equal({'c': 'ccc', '1': 99, 'b': [1, 2, function('strlen')], '3': 33, '-1': {'a': 1}}, d)
 END
 call CheckLegacyAndVim9Success(lines)

 let d = {001: 'asd', 'b': [1, 2, function('strlen')], -1: {'a': 1},}
 call assert_equal("{'1': 'asd', 'b': [1, 2, function('strlen')], '-1': {'a': 1}}", string(d))

 let v = []
 for [key, val] in items(d)
   call extend(v, [key, val])
   unlet key val
 endfor
 call assert_equal(['1','asd','b',[1, 2, function('strlen')],'-1',{'a': 1}], v)

 call extend(d, {3: 33, 1: 99})
 call assert_fails("call extend(d, {3:333,4:444}, 'error')", 'E737:')

 " duplicate key
 call assert_fails("let d = {'k' : 10, 'k' : 20}", 'E721:')
 " missing comma
 call assert_fails("let d = {'k' : 10 'k' : 20}", 'E722:')
 " missing curly brace
 call assert_fails("let d = {'k' : 10,", 'E723:')
 " invalid key
 call assert_fails('let d = #{++ : 10}', 'E15:')
 " wrong type for key
 call assert_fails('let d={[] : 10}', 'E730:')
 " undefined variable as value
 call assert_fails("let d={'k' : i}", 'E121:')

 " allow key starting with number at the start, not a curly expression
 call assert_equal({'1foo': 77}, #{1foo: 77})

 " #{expr} is not a curly expression
 let x = 'x'
 call assert_equal(#{g: x}, #{g:x})
endfunc

" This was allowed in legacy Vim script
let s:dict_with_spaces = {'one' : 1 , 'two' : 2 , 'three' : 3}
let s:dict_with_spaces_lit = #{one : 1 , two : 2 , three : 3}

" Dictionary identity
func Test_dict_identity()
 let lines =<< trim END
     VAR d = {'1': 'asd', 'b': [1, 2, function('strlen')], -1: {'a': 1}, }
     VAR dd = d
     VAR dx = copy(d)
     call assert_true(d == dd)
     call assert_false(d isnot dd)
     call assert_true(d is dd)
     call assert_true(d == dx)
     call assert_false(d is dx)
     call assert_true(d isnot dx)
 END
 call CheckLegacyAndVim9Success(lines)
endfunc

" removing items with :unlet
func Test_dict_unlet()
 let lines =<< trim END
     VAR d = {'b': 'bbb', '1': 99, '3': 33, '-1': {'a': 1}}
     unlet d.b
     unlet d[-1]
     call assert_equal({'1': 99, '3': 33}, d)
 END
 call CheckLegacyAndVim9Success(lines)
endfunc

" manipulating a big Dictionary (hashtable.c has a border of 1000 entries)
func Test_dict_big()
 let d = {}
 for i in range(1500)
   let d[i] = 3000 - i
 endfor
 call assert_equal([3000, 2900, 2001, 1600, 1501], [d[0], d[100], d[999], d[1400], d[1499]])
 let str = ''
 try
   let n = d[1500]
 catch
   let str = substitute(v:exception, '\v(.{14}).*( "\d{4}").*', '\1\2', '')
 endtry
 call assert_equal('Vim(let):E716: "1500"', str)

 " lookup each item
 for i in range(1500)
   call assert_equal(3000 - i, d[i])
 endfor
 let i += 1

 " delete even items
 while i >= 2
   let i -= 2
   unlet d[i]
 endwhile
 call assert_equal('NONE', get(d, 1500 - 100, 'NONE'))
 call assert_equal(2999, d[1])

 " delete odd items, checking value, one intentionally wrong
 let d[33] = 999
 let i = 1
 while i < 1500
  if i != 33
    call assert_equal(3000 - i, d[i])
  else
    call assert_equal(999, d[i])
  endif
  unlet d[i]
  let i += 2
 endwhile
 call assert_equal({}, d)
 unlet d
endfunc

" Dictionary function
func Test_dict_func()
 let d = {}
 func d.func(a) dict
   return a:a . len(self.data)
 endfunc
 let d.data = [1,2,3]
 call assert_equal('len: 3', d.func('len: '))
 let x = d.func('again: ')
 call assert_equal('again: 3', x)
 let Fn = d.func
 call assert_equal('xxx3', Fn('xxx'))
endfunc

func Test_dict_assign()
 let d = {}
 let d.1 = 1
 let d._ = 2
 call assert_equal({'1': 1, '_': 2}, d)

 let lines =<< trim END
     VAR d = {}
     LET d.a = 1
     LET d._ = 2
     call assert_equal({'a': 1, '_': 2}, d)
 END
 call CheckLegacyAndVim9Success(lines)

 let lines =<< trim END
   let n = 0
   let n.key = 3
 END
 call CheckScriptFailure(lines, 'E1203: Dot can only be used on a dictionary: n.key = 3')
 let lines =<< trim END
   vim9script
   var n = 0
   n.key = 3
 END
 call CheckScriptFailure(lines, 'E1203: Dot can only be used on a dictionary: n.key = 3')
 let lines =<< trim END
   var n = 0
   n.key = 3
 END
 call CheckDefFailure(lines, 'E1141:')

 let d = {'abc': {}}
 call assert_fails("let d.abc[0z10] = 10", 'E976: Using a Blob as a String')
endfunc

" Function in script-local List or Dict
func Test_script_local_dict_func()
 let g:dict = {}
 function g:dict.func() dict
   return 'g:dict.func' . self.foo[1] . self.foo[0]('asdf')
 endfunc
 let g:dict.foo = ['-', 2, 3]
 call insert(g:dict.foo, function('strlen'))
 call assert_equal('g:dict.func-4', g:dict.func())
 unlet g:dict
endfunc

" Test removing items in a dictionary
func Test_dict_func_remove()
 let lines =<< trim END
     VAR d = {1: 'a', 2: 'b', 3: 'c'}
     call assert_equal('b', remove(d, 2))
     call assert_equal({1: 'a', 3: 'c'}, d)
 END
 call CheckLegacyAndVim9Success(lines)

 let lines =<< trim END
     VAR d = {1: 'a', 3: 'c'}
     call remove(d, 1, 2)
 END
 call CheckLegacyAndVim9Failure(lines, 'E118:')

 let lines =<< trim END
     VAR d = {1: 'a', 3: 'c'}
     call remove(d, 'a')
 END
 call CheckLegacyAndVim9Failure(lines, 'E716:')

 let lines =<< trim END
     let d = {'a-b': 55}
     echo d.a-b
 END
 call CheckScriptFailure(lines, 'E716: Key not present in Dictionary: "a"')

 let lines =<< trim END
     vim9script
     var d = {'a-b': 55}
     echo d.a-b
 END
 call CheckScriptFailure(lines, 'E716: Key not present in Dictionary: "a"')

 let lines =<< trim END
     var d = {'a-b': 55}
     echo d.a-b
 END
 call CheckDefFailure(lines, 'E1004: White space required before and after ''-''')

 let lines =<< trim END
     let d = {1: 'a', 3: 'c'}
     call remove(d, [])
 END
 call CheckScriptFailure(lines, 'E730:')
 let lines =<< trim END
     vim9script
     var d = {1: 'a', 3: 'c'}
     call remove(d, [])
 END
 call CheckScriptFailure(lines, 'E1174: String required for argument 2')
 let lines =<< trim END
     var d = {1: 'a', 3: 'c'}
     call remove(d, [])
 END
 call CheckDefExecFailure(lines, 'E1013: Argument 2: type mismatch, expected string but got list<unknown>')
endfunc

" Nasty: remove func from Dict that's being called (works)
func Test_dict_func_remove_in_use()
 let d = {1:1}
 func d.func(a)
   return "a:" . a:a
 endfunc
 let expected = 'a:' . string(get(d, 'func'))
 call assert_equal(expected, d.func(string(remove(d, 'func'))))

 " similar, in a way it also works in Vim9
 let lines =<< trim END
     VAR d = {1: 1, 2: 'x'}
     func GetArg(a)
       return "a:" .. a:a
     endfunc
     LET d.func = function('GetArg')
     VAR expected = 'a:' .. string(get(d, 'func'))
     call assert_equal(expected, d.func(string(remove(d, 'func'))))
 END
 call CheckTransLegacySuccess(lines)
 call CheckTransVim9Success(lines)
endfunc

func Test_dict_literal_keys()
 call assert_equal({'one': 1, 'two2': 2, '3three': 3, '44': 4}, #{one: 1, two2: 2, 3three: 3, 44: 4},)

 " why *{} cannot be used for a literal dictionary
 let blue = 'blue'
 call assert_equal('6', trim(execute('echo 2 *{blue: 3}.blue')))

 call assert_fails('eval 1 || #{a:', 'E15:') " used to leak
endfunc

" Nasty: deepcopy() dict that refers to itself (fails when noref used)
func Test_dict_deepcopy()
 let lines =<< trim END
     VAR d = {1: 1, 2: '2'}
     VAR l = [4, d, 6]
     LET d[3] = l
     VAR dc = deepcopy(d)
     call deepcopy(d, 1)
 END
 call CheckLegacyAndVim9Failure(lines, 'E698:')

 let lines =<< trim END
     VAR d = {1: 1, 2: '2'}
     VAR l = [4, d, 6]
     LET d[3] = l
     VAR l2 = [0, l, l, 3]
     LET l[1] = l2
     VAR l3 = deepcopy(l2)
     call assert_true(l3[1] is l3[2])
 END
 call CheckLegacyAndVim9Success(lines)

 call assert_fails("call deepcopy([1, 2], 2)", 'E1212:')
endfunc

" Locked variables
func Test_list_locked_var()
 " Not tested with :def function, local vars cannot be locked.
 let lines =<< trim END
     VAR expected = [
                 \ [['1000-000', 'ppppppF'],
                 \  ['0000-000', 'ppppppp'],
                 \  ['0000-000', 'ppppppp']],
                 \ [['1000-000', 'ppppppF'],
                 \  ['0000-000', 'ppppppp'],
                 \  ['0000-000', 'ppppppp']],
                 \ [['1100-100', 'ppFppFF'],
                 \  ['0000-000', 'ppppppp'],
                 \  ['0000-000', 'ppppppp']],
                 \ [['1110-110', 'pFFpFFF'],
                 \  ['0010-010', 'pFppFpp'],
                 \  ['0000-000', 'ppppppp']],
                 \ [['1111-111', 'FFFFFFF'],
                 \  ['0011-011', 'FFpFFpp'],
                 \  ['0000-000', 'ppppppp']]
                 \ ]
     for depth in range(5)
       for u in range(3)
         VAR l = [0, [1, [2, 3]], {4: 5, 6: {7: 8}}]
         exe "lockvar " .. depth .. " l"
         if u == 1
           exe "unlockvar l"
         elseif u == 2
           exe "unlockvar " .. depth .. " l"
         endif
         VAR ps = islocked("l") .. islocked("l[1]") .. islocked("l[1][1]") .. islocked("l[1][1][0]") .. '-' .. islocked("l[2]") .. islocked("l[2]['6']") .. islocked("l[2]['6'][7]")
         call assert_equal(expected[depth][u][0], ps, 'depth: ' .. depth)
         LET ps = ''
         try
           LET l[1][1][0] = 99
           LET ps ..= 'p'
         catch
           LET ps ..= 'F'
         endtry
         try
           LET l[1][1] = [99]
           LET ps ..= 'p'
         catch
           LET ps ..= 'F'
         endtry
         try
           LET l[1] = [99]
           LET ps ..= 'p'
         catch
           LET ps ..= 'F'
         endtry
         try
           LET l[2]['6'][7] = 99
           LET ps ..= 'p'
         catch
           LET ps ..= 'F'
         endtry
         try
           LET l[2][6] = {99: 99}
           LET ps ..= 'p'
         catch
           LET ps ..= 'F'
         endtry
         try
           LET l[2] = {99: 99}
           LET ps ..= 'p'
         catch
           LET ps ..= 'F'
         endtry
         try
           LET l = [99]
           LET ps ..= 'p'
         catch
           LET ps ..= 'F'
         endtry
         call assert_equal(expected[depth][u][1], ps, 'depth: ' .. depth)
         unlock! l
       endfor
     endfor
 END
 call CheckTransLegacySuccess(lines)
 call CheckTransVim9Success(lines)

 call assert_fails("let x=islocked('a b')", 'E488:')
 let mylist = [1, 2, 3]
 call assert_fails("let x = islocked('mylist[1:2]')", 'E786:')
 let mydict = {'k' : 'v'}
 call assert_fails("let x = islocked('mydict.a')", 'E716:')
endfunc

" Unletting locked variables
func Test_list_locked_var_unlet()
 " Not tested with Vim9: script and local variables cannot be unlocked
 let expected = [
      \ [['1000-000', 'ppppppp'],
      \  ['0000-000', 'ppppppp'],
      \  ['0000-000', 'ppppppp']],
      \ [['1000-000', 'ppFppFp'],
      \  ['0000-000', 'ppppppp'],
      \  ['0000-000', 'ppppppp']],
      \ [['1100-100', 'pFFpFFp'],
      \  ['0000-000', 'ppppppp'],
      \  ['0000-000', 'ppppppp']],
      \ [['1110-110', 'FFFFFFp'],
      \  ['0010-010', 'FppFppp'],
      \  ['0000-000', 'ppppppp']],
      \ [['1111-111', 'FFFFFFp'],
      \  ['0011-011', 'FppFppp'],
      \  ['0000-000', 'ppppppp']]
      \ ]

 for depth in range(5)
   for u in range(3)
     unlet! l
     let l = [0, [1, [2, 3]], {4: 5, 6: {7: 8}}]
     exe "lockvar " . depth . " l"
     if u == 1
       exe "unlockvar l"
     elseif u == 2
       exe "unlockvar " . depth . " l"
     endif
     let ps = islocked("l").islocked("l[1]").islocked("l[1][1]").islocked("l[1][1][0]").'-'.islocked("l[2]").islocked("l[2]['6']").islocked("l[2]['6'][7]")
     call assert_equal(expected[depth][u][0], ps, 'depth: ' .. depth)
     let ps = ''
     try
       unlet l[2]['6'][7]
       let ps .= 'p'
     catch
       let ps .= 'F'
     endtry
     try
       unlet l[2][6]
       let ps .= 'p'
     catch
       let ps .= 'F'
     endtry
     try
       unlet l[2]
       let ps .= 'p'
     catch
       let ps .= 'F'
     endtry
     try
       unlet l[1][1][0]
       let ps .= 'p'
     catch
       let ps .= 'F'
     endtry
     try
       unlet l[1][1]
       let ps .= 'p'
     catch
       let ps .= 'F'
     endtry
     try
       unlet l[1]
       let ps .= 'p'
     catch
       let ps .= 'F'
     endtry
     try
       unlet l
       let ps .= 'p'
     catch
       let ps .= 'F'
     endtry
     call assert_equal(expected[depth][u][1], ps)
   endfor
 endfor

 " Deleting a list range with locked items works, but changing the items
 " fails.
 let l = [1, 2, 3, 4]
 lockvar l[1:2]
 call assert_fails('let l[1:2] = [8, 9]', 'E741:')
 unlet l[1:2]
 call assert_equal([1, 4], l)
 unlet l
endfunc

" Locked variables and :unlet or list / dict functions

" No :unlet after lock on dict:
func Test_dict_lock_unlet()
 let d = {'a': 99, 'b': 100}
 lockvar 1 d
 call assert_fails('unlet d.a', 'E741:')
endfunc

" unlet after lock on dict item
func Test_dict_item_lock_unlet()
 let lines =<< trim END
     VAR d = {'a': 99, 'b': 100}
     lockvar d.a
     unlet d.a
     call assert_equal({'b': 100}, d)
 END
 call CheckLegacyAndVim9Success(lines)
endfunc

" filter() after lock on dict item
func Test_dict_lock_filter()
 let lines =<< trim END
     VAR d = {'a': 99, 'b': 100}
     lockvar d.a
     call filter(d, 'v:key != "a"')
     call assert_equal({'b': 100}, d)
 END
 call CheckLegacyAndVim9Success(lines)
endfunc

" map() after lock on dict
func Test_dict_lock_map()
 let lines =<< trim END
     VAR d = {'a': 99, 'b': 100}
     lockvar 1 d
     call map(d, 'v:val + 200')
     call assert_equal({'a': 299, 'b': 300}, d)
 END
 " This won't work in a :def function
 call CheckTransLegacySuccess(lines)
 call CheckTransVim9Success(lines)

 " For a :def function use a global dict.
 let lines =<< trim END
     let g:thedict = {'a': 77, 'b': 88}
     lockvar 1 g:thedict
     def Delkey()
       unlet g:thedict.a
     enddef
     call Delkey()
 END
 " call CheckScriptFailure(lines, 'E741:')
endfunc

" No extend() after lock on dict item
func Test_dict_lock_extend()
 let d = {'a': 99, 'b': 100}
 lockvar d.a
 call assert_fails("call extend(d, {'a' : 123})", 'E741:')
 call assert_equal({'a': 99, 'b': 100}, d)
endfunc

" Cannot use += with a locked dict
func Test_dict_lock_operator()
 let d = {}
 lockvar d
 call assert_fails("let d += {'k' : 10}", 'E741:')
 unlockvar d
endfunc

" No remove() of write-protected scope-level variable
func Tfunc1(this_is_a_long_parameter_name)
 call assert_fails("call remove(a:, 'this_is_a_long_parameter_name')", 'E742:')
endfunc
func Test_dict_scope_var_remove()
 call Tfunc1('testval')
endfunc

" No extend() of write-protected scope-level variable
func Test_dict_scope_var_extend()
 call assert_fails("call extend(a:, {'this_is_a_long_parameter_name': 1234})", 'E742:')
endfunc
func Tfunc2(this_is_a_long_parameter_name)
 call assert_fails("call extend(a:, {'this_is_a_long_parameter_name': 1234})", 'E742:')
endfunc
func Test_dict_scope_var_extend_overwrite()
 call Tfunc2('testval')
endfunc

" No :unlet of variable in locked scope
func Test_lock_var_unlet()
 let b:testvar = 123
 lockvar 1 b:
 call assert_fails('unlet b:testvar', 'E741:')
 unlockvar 1 b:
 unlet! b:testvar
endfunc

" No :let += of locked list variable
func Test_let_lock_list()
 let l = ['a', 'b', 3]
 lockvar 1 l
 call assert_fails("let l += ['x']", 'E741:')
 call assert_equal(['a', 'b', 3], l)

 unlet l
 let l = [1, 2, 3, 4]
 lockvar! l
 call assert_equal([1, 2, 3, 4], l)
 unlockvar l[1]
 call assert_fails('unlet l[0:1]', 'E741:')
 call assert_equal([1, 2, 3, 4], l)
 call assert_fails('unlet l[1:2]', 'E741:')
 call assert_equal([1, 2, 3, 4], l)
 unlockvar l[1]
 call assert_fails('let l[0:1] = [0, 1]', 'E741:')
 call assert_equal([1, 2, 3, 4], l)
 call assert_fails('let l[1:2] = [0, 1]', 'E741:')
 call assert_equal([1, 2, 3, 4], l)
 unlet l
endfunc

" Locking part of the list
func Test_let_lock_list_items()
 let l = [1, 2, 3, 4]
 lockvar l[2:]
 call assert_equal(0, islocked('l[0]'))
 call assert_equal(1, islocked('l[2]'))
 call assert_equal(1, islocked('l[3]'))
 call assert_fails('let l[2] = 10', 'E741:')
 call assert_fails('let l[3] = 20', 'E741:')
 unlet l
endfunc

" lockvar/islocked() triggering script autoloading
func Test_lockvar_script_autoload()
 let old_rtp = &rtp
 set rtp+=./sautest
 lockvar g:footest#x
 unlockvar g:footest#x
 call assert_equal(-1, 'g:footest#x'->islocked())
 call assert_equal(0, exists('g:footest#x'))
 call assert_equal(1, g:footest#x)
 let &rtp = old_rtp
endfunc

" a:000 function argument test
func s:arg_list_test(...)
 call assert_fails('let a:000 = [1, 2]', 'E46:')
 call assert_fails('let a:000[0] = 9', 'E742:')
 call assert_fails('let a:000[2] = [9, 10]', 'E742:')
 call assert_fails('let a:000[3] = {9 : 10}', 'E742:')

 " now the tests that should pass
 let a:000[2][1] = 9
 call extend(a:000[2], [5, 6])
 let a:000[3][5] = 8
 let a:000[3]['a'] = 12
 call assert_equal([1, 2, [3, 9, 5, 6], {'a': 12, '5': 8}], a:000)
endfunc

func Test_func_arg_list()
 call s:arg_list_test(1, 2, [3, 4], {5: 6})
endfunc

" Tests for reverse(), sort(), uniq()
func Test_reverse_sort_uniq()
 let lines =<< trim END
     VAR l = ['-0', 'A11', 2, 2, 'xaaa', 4, 'foo', 'foo6', 'foo', [0, 1, 2], 'x8', [0, 1, 2], 1.5]
     call assert_equal(['-0', 'A11', 2, 'xaaa', 4, 'foo', 'foo6', 'foo', [0, 1, 2], 'x8', [0, 1, 2], 1.5], uniq(copy(l)))
     call assert_equal([1.5, [0, 1, 2], 'x8', [0, 1, 2], 'foo', 'foo6', 'foo', 4, 'xaaa', 2, 2, 'A11', '-0'], reverse(l))
     call assert_equal([1.5, [0, 1, 2], 'x8', [0, 1, 2], 'foo', 'foo6', 'foo', 4, 'xaaa', 2, 2, 'A11', '-0'], reverse(reverse(l)))
     if has('float')
       call assert_equal(['-0', 'A11', 'foo', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 2, 4, [0, 1, 2], [0, 1, 2]], sort(l))
       call assert_equal([[0, 1, 2], [0, 1, 2], 4, 2, 2, 1.5, 'xaaa', 'x8', 'foo6', 'foo', 'foo', 'A11', '-0'], reverse(sort(l)))
       call assert_equal(['-0', 'A11', 'foo', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 2, 4, [0, 1, 2], [0, 1, 2]], sort(reverse(sort(l))))
       call assert_equal(['-0', 'A11', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 4, [0, 1, 2]], uniq(sort(l)))

       LET l = [7, 9, 'one', 18, 12, 22, 'two', 10.0e-16, -1, 'three', 0xff, 0.22, 'four']
       call assert_equal([-1, 'one', 'two', 'three', 'four', 1.0e-15, 0.22, 7, 9, 12, 18, 22, 255], sort(copy(l), 'n'))

       LET l = [7, 9, 18, 12, 22, 10.0e-16, -1, 0xff, 0, -0, 0.22, 'bar', 'BAR', 'Bar', 'Foo', 'FOO', 'foo', 'FOOBAR', {}, []]
       call assert_equal(['bar', 'BAR', 'Bar', 'Foo', 'FOO', 'foo', 'FOOBAR', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}], sort(copy(l), 'i'))
       call assert_equal(['bar', 'BAR', 'Bar', 'Foo', 'FOO', 'foo', 'FOOBAR', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}], sort(copy(l), 'i'))
       call assert_equal(['BAR', 'Bar', 'FOO', 'FOOBAR', 'Foo', 'bar', 'foo', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}], sort(copy(l)))
     endif
 END
 call CheckLegacyAndVim9Success(lines)

 call assert_fails('call reverse({})', 'E1252:')
 call assert_fails('call uniq([1, 2], {x, y -> []})', 'E745:')
 call assert_fails("call sort([1, 2], function('min'), 1)", "E1206:")
 call assert_fails("call sort([1, 2], function('invalid_func'))", "E700:")
 call assert_fails("call sort([1, 2], function('min'))", "E118:")

 let lines =<< trim END
   call sort(['a', 'b'], 0)
 END
 call CheckDefAndScriptFailure(lines, 'E1256: String or function required for argument 2')

 let lines =<< trim END
   call sort(['a', 'b'], 1)
 END
 call CheckDefAndScriptFailure(lines, 'E1256: String or function required for argument 2')
endfunc

" reduce a list, blob or string
func Test_reduce()
 let lines =<< trim END
     call assert_equal(1, reduce([], LSTART acc, val LMIDDLE acc + val LEND, 1))
     call assert_equal(10, reduce([1, 3, 5], LSTART acc, val LMIDDLE acc + val LEND, 1))
     call assert_equal(2 * (2 * ((2 * 1) + 2) + 3) + 4, reduce([2, 3, 4], LSTART acc, val LMIDDLE 2 * acc + val LEND, 1))
     call assert_equal('a x y z', ['x', 'y', 'z']->reduce(LSTART acc, val LMIDDLE acc .. ' ' .. val LEND, 'a'))
     call assert_equal([0, 1, 2, 3], reduce([1, 2, 3], function('add'), [0]))

     VAR l = ['x', 'y', 'z']
     call assert_equal(42, reduce(l, function('get'), {'x': {'y': {'z': 42 } } }))
     call assert_equal(['x', 'y', 'z'], l)

     call assert_equal(1, reduce([1], LSTART acc, val LMIDDLE acc + val LEND))
     call assert_equal('x y z', reduce(['x', 'y', 'z'], LSTART acc, val LMIDDLE acc .. ' ' .. val LEND))
     call assert_equal(120, range(1, 5)->reduce(LSTART acc, val LMIDDLE acc * val LEND))

     call assert_equal(1, reduce(0z, LSTART acc, val LMIDDLE acc + val LEND, 1))
     call assert_equal(1 + 0xaf + 0xbf + 0xcf, reduce(0zAFBFCF, LSTART acc, val LMIDDLE acc + val LEND, 1))
     call assert_equal(2 * (2 * 1 + 0xaf) + 0xbf, 0zAFBF->reduce(LSTART acc, val LMIDDLE 2 * acc + val LEND, 1))

     call assert_equal(0xff, reduce(0zff, LSTART acc, val LMIDDLE acc + val LEND))
     call assert_equal(2 * (2 * 0xaf + 0xbf) + 0xcf, reduce(0zAFBFCF, LSTART acc, val LMIDDLE 2 * acc + val LEND))

     call assert_equal('x,y,z', 'xyz'->reduce(LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
     call assert_equal('', ''->reduce(LSTART acc, val LMIDDLE acc .. ',' .. val LEND, ''))
     call assert_equal('あ,い,う,え,お,😊,💕', 'あいうえお😊💕'->reduce(LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
     call assert_equal('😊,あ,い,う,え,お,💕', 'あいうえお💕'->reduce(LSTART acc, val LMIDDLE acc .. ',' .. val LEND, '😊'))
     call assert_equal('ऊ,ॠ,ॡ', reduce('ऊॠॡ', LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
     call assert_equal('c,à,t', reduce('càt', LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
     call assert_equal('Å,s,t,r,ö,m', reduce('Åström', LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
     call assert_equal('Å,s,t,r,ö,m', reduce('Åström', LSTART acc, val LMIDDLE acc .. ',' .. val LEND))
     call assert_equal(',a,b,c', reduce('abc', LSTART acc, val LMIDDLE acc .. ',' .. val LEND, v:_null_string))

     call assert_equal(0x7d, reduce([0x30, 0x25, 0x08, 0x61], 'or'))
     call assert_equal(0x7d, reduce(0z30250861, 'or'))
     call assert_equal('β', reduce('ββββ', 'matchstr'))
 END
 call CheckLegacyAndVim9Success(lines)

 call assert_equal({'x': 1, 'y': 1, 'z': 1 }, ['x', 'y', 'z']->reduce({ acc, val -> extend(acc, { val: 1 }) }, {}))
 " vim9 assert_equal({'x': 1, 'y': 1, 'z': 1 }, ['x', 'y', 'z']->reduce((acc, val) => extend(acc, {[val]: 1 }), {}))

 call assert_fails("call reduce([], { acc, val -> acc + val })", 'E998: Reduce of an empty List with no initial value')
 call assert_fails("call reduce(0z, { acc, val -> acc + val })", 'E998: Reduce of an empty Blob with no initial value')
 call assert_fails("call reduce(v:_null_blob, { acc, val -> acc + val })", 'E998: Reduce of an empty Blob with no initial value')
 call assert_fails("call reduce('', { acc, val -> acc + val })", 'E998: Reduce of an empty String with no initial value')
 call assert_fails("call reduce(v:_null_string, { acc, val -> acc + val })", 'E998: Reduce of an empty String with no initial value')

 call assert_fails("call reduce({}, { acc, val -> acc + val }, 1)", 'E1098:')
 call assert_fails("call reduce(0, { acc, val -> acc + val }, 1)", 'E1098:')
 call assert_fails("call reduce([1, 2], 'Xdoes_not_exist')", 'E117:')
 call assert_fails("echo reduce(0z01, { acc, val -> 2 * acc + val }, '')", 'E1210:')

 " call assert_fails("vim9 reduce(0, (acc, val) => (acc .. val), '')", 'E1252:')
 " call assert_fails("vim9 reduce({}, (acc, val) => (acc .. val), '')", 'E1252:')
 " call assert_fails("vim9 reduce(0.1, (acc, val) => (acc .. val), '')", 'E1252:')
 " call assert_fails("vim9 reduce(function('tr'), (acc, val) => (acc .. val), '')", 'E1252:')
 call assert_fails("call reduce('', { acc, val -> acc + val }, 1)", 'E1174:')
 call assert_fails("call reduce('', { acc, val -> acc + val }, {})", 'E1174:')
 call assert_fails("call reduce('', { acc, val -> acc + val }, 0.1)", 'E1174:')
 call assert_fails("call reduce('', { acc, val -> acc + val }, function('tr'))", 'E1174:')
 call assert_fails("call reduce('abc', { a, v -> a10}, '')", 'E121:')
 call assert_fails("call reduce(0z0102, { a, v -> a10}, 1)", 'E121:')
 call assert_fails("call reduce([1, 2], { a, v -> a10}, '')", 'E121:')

 let g:lut = [1, 2, 3, 4]
 func EvilRemove()
   call remove(g:lut, 1)
   return 1
 endfunc
 call assert_fails("call reduce(g:lut, { acc, val -> EvilRemove() }, 1)", 'E742:')
 unlet g:lut
 delfunc EvilRemove

 call assert_equal(42, reduce(v:_null_list, function('add'), 42))
 call assert_equal(42, reduce(v:_null_blob, function('add'), 42))

 " should not crash
 " Nvim doesn't have null functions
 " call assert_fails('echo reduce([1], test_null_function())', 'E1132:')
 " Nvim doesn't have null partials
 " call assert_fails('echo reduce([1], test_null_partial())', 'E1132:')
endfunc

" splitting a string to a List using split()
func Test_str_split()
 let lines =<< trim END
     call assert_equal(['aa', 'bb'], split('  aa  bb '))
     call assert_equal(['aa', 'bb'], split('  aa  bb  ', '\W\+', 0))
     call assert_equal(['', 'aa', 'bb', ''], split('  aa  bb  ', '\W\+', 1))
     call assert_equal(['', '', 'aa', '', 'bb', '', ''], split('  aa  bb  ', '\W', 1))
     call assert_equal(['aa', '', 'bb'], split(':aa::bb:', ':', 0))
     call assert_equal(['', 'aa', '', 'bb', ''], split(':aa::bb:', ':', 1))
     call assert_equal(['aa', '', 'bb', 'cc', ''], split('aa,,bb, cc,', ',\s*', 1))
     call assert_equal(['a', 'b', 'c'], split('abc', '\zs'))
     call assert_equal(['', 'a', '', 'b', '', 'c', ''], split('abc', '\zs', 1))
     call assert_equal(['abc'], split('abc', '\\%('))
 END
 call CheckLegacyAndVim9Success(lines)

 call assert_fails("call split('abc', [])", 'E730:')
 call assert_fails("call split('abc', 'b', [])", 'E745:')
endfunc

" compare recursively linked list and dict
func Test_listdict_compare()
 let lines =<< trim END
     VAR l = [1, 2, 3, '4']
     VAR d = {'1': 1, '2': l, '3': 3}
     LET l[1] = d
     call assert_true(l == l)
     call assert_true(d == d)
     call assert_false(l != deepcopy(l))
     call assert_false(d != deepcopy(d))
 END
 call CheckLegacyAndVim9Success(lines)

 " comparison errors
 call assert_fails('echo [1, 2] =~ {}', 'E691:')
 call assert_fails('echo [1, 2] =~ [1, 2]', 'E692:')
 call assert_fails('echo {} =~ 5', 'E735:')
 call assert_fails('echo {} =~ {}', 'E736:')
endfunc

func Test_recursive_listdict_compare()
 let l1 = [0, 1]
 let l1[0] = l1
 let l2 = [0, 1]
 let l2[0] = l2
 call assert_true(l1 == l2)
 let d1 = {0: 0, 1: 1}
 let d1[0] = d1
 let d2 = {0: 0, 1: 1}
 let d2[0] = d2
 call assert_true(d1 == d2)
endfunc

 " compare complex recursively linked list and dict
func Test_listdict_compare_complex()
 let lines =<< trim END
     VAR l = []
     call add(l, l)
     VAR dict4 = {"l": l}
     call add(dict4.l, dict4)
     VAR lcopy = deepcopy(l)
     VAR dict4copy = deepcopy(dict4)
     call assert_true(l == lcopy)
     call assert_true(dict4 == dict4copy)
 END
 call CheckLegacyAndVim9Success(lines)
endfunc

" Test for extending lists and dictionaries
func Test_listdict_extend()
 " Test extend() with lists

 " Pass the same List to extend()
 let lines =<< trim END
     VAR l = [1, 2, 3]
     call assert_equal([1, 2, 3, 1, 2, 3], extend(l, l))
     call assert_equal([1, 2, 3, 1, 2, 3], l)

     LET l = [1, 2, 3]
     call assert_equal([1, 2, 3, 4, 5, 6], extend(l, [4, 5, 6]))
     call assert_equal([1, 2, 3, 4, 5, 6], l)

     LET l = [1, 2, 3]
     call extend(l, [4, 5, 6], 0)
     call assert_equal([4, 5, 6, 1, 2, 3], l)

     LET l = [1, 2, 3]
     call extend(l, [4, 5, 6], 1)
     call assert_equal([1, 4, 5, 6, 2, 3], l)

     LET l = [1, 2, 3]
     call extend(l, [4, 5, 6], 3)
     call assert_equal([1, 2, 3, 4, 5, 6], l)

     LET l = [1, 2, 3]
     call extend(l, [4, 5, 6], -1)
     call assert_equal([1, 2, 4, 5, 6, 3], l)

     LET l = [1, 2, 3]
     call extend(l, [4, 5, 6], -3)
     call assert_equal([4, 5, 6, 1, 2,  3], l)
 END
 call CheckLegacyAndVim9Success(lines)

 let l = [1, 2, 3]
 call assert_fails("call extend(l, [4, 5, 6], 4)", 'E684:')
 call assert_fails("call extend(l, [4, 5, 6], -4)", 'E684:')
 if has('float')
   call assert_fails("call extend(l, [4, 5, 6], 1.2)", 'E805:')
 endif

 " Test extend() with dictionaries.

 " Pass the same Dict to extend()
 let lines =<< trim END
     VAR d = {'a': {'b': 'B'}, 'x': 9}
     call extend(d, d)
     call assert_equal({'a': {'b': 'B'}, 'x': 9}, d)

     LET d = {'a': 'A', 'b': 9}
     call assert_equal({'a': 'A', 'b': 0, 'c': 'C'}, extend(d, {'b': 0, 'c': 'C'}))
     call assert_equal({'a': 'A', 'b': 0, 'c': 'C'}, d)

     LET d = {'a': 'A', 'b': 9}
     call extend(d, {'a': 'A', 'b': 0, 'c': 'C'}, "force")
     call assert_equal({'a': 'A', 'b': 0, 'c': 'C'}, d)

     LET d = {'a': 'A', 'b': 9}
     call extend(d, {'b': 0, 'c': 'C'}, "keep")
     call assert_equal({'a': 'A', 'b': 9, 'c': 'C'}, d)
 END
 call CheckLegacyAndVim9Success(lines)

 let d = {'a': 'A', 'b': 'B'}
 call assert_fails("call extend(d, {'b': 0, 'c':'C'}, 'error')", 'E737:')
 call assert_fails("call extend(d, {'b': 0}, [])", 'E730:')
 call assert_fails("call extend(d, {'b': 0, 'c':'C'}, 'xxx')", 'E475:')
 if has('float')
   call assert_fails("call extend(d, {'b': 0, 'c':'C'}, 1.2)", 'E475:')
 endif
 call assert_equal({'a': 'A', 'b': 'B'}, d)

 call assert_fails("call extend([1, 2], 1)", 'E712:')
 call assert_fails("call extend([1, 2], {})", 'E712:')

 " Extend g: dictionary with an invalid variable name
 call assert_fails("call extend(g:, {'-!' : 10})", 'E461:')

 " Extend a list with itself.
 let lines =<< trim END
     VAR l = [1, 5, 7]
     call extend(l, l, 0)
     call assert_equal([1, 5, 7, 1, 5, 7], l)
     LET l = [1, 5, 7]
     call extend(l, l, 1)
     call assert_equal([1, 1, 5, 7, 5, 7], l)
     LET l = [1, 5, 7]
     call extend(l, l, 2)
     call assert_equal([1, 5, 1, 5, 7, 7], l)
     LET l = [1, 5, 7]
     call extend(l, l, 3)
     call assert_equal([1, 5, 7, 1, 5, 7], l)
 END
 call CheckLegacyAndVim9Success(lines)
endfunc

func Test_listdict_extendnew()
 " Test extendnew() with lists
 let l = [1, 2, 3]
 call assert_equal([1, 2, 3, 4, 5], extendnew(l, [4, 5]))
 call assert_equal([1, 2, 3], l)
 lockvar l
 call assert_equal([1, 2, 3, 4, 5], extendnew(l, [4, 5]))

 " Test extendnew() with dictionaries.
 let d = {'a': {'b': 'B'}}
 call assert_equal({'a': {'b': 'B'}, 'c': 'cc'}, extendnew(d, {'c': 'cc'}))
 call assert_equal({'a': {'b': 'B'}}, d)
 lockvar d
 call assert_equal({'a': {'b': 'B'}, 'c': 'cc'}, extendnew(d, {'c': 'cc'}))
endfunc

func s:check_scope_dict(x, fixed)
 func s:gen_cmd(cmd, x)
   return substitute(a:cmd, '\<x\ze:', a:x, 'g')
 endfunc

 let cmd = s:gen_cmd('let x:foo = 1', a:x)
 if a:fixed
   call assert_fails(cmd, 'E461')
 else
   exe cmd
   exe s:gen_cmd('call assert_equal(1, x:foo)', a:x)
 endif

 let cmd = s:gen_cmd('let x:["bar"] = 2', a:x)
 if a:fixed
   call assert_fails(cmd, 'E461')
 else
   exe cmd
   exe s:gen_cmd('call assert_equal(2, x:bar)', a:x)
 endif

 let cmd = s:gen_cmd('call extend(x:, {"baz": 3})', a:x)
 if a:fixed
   call assert_fails(cmd, 'E742')
 else
   exe cmd
   exe s:gen_cmd('call assert_equal(3, x:baz)', a:x)
 endif

 if a:fixed
   if a:x ==# 'a'
     call assert_fails('unlet a:x', 'E795')
     call assert_fails('call remove(a:, "x")', 'E742')
   elseif a:x ==# 'v'
     call assert_fails('unlet v:count', 'E795')
     call assert_fails('call remove(v:, "count")', 'E742')
   endif
 else
   exe s:gen_cmd('unlet x:foo', a:x)
   exe s:gen_cmd('unlet x:bar', a:x)
   exe s:gen_cmd('call remove(x:, "baz")', a:x)
 endif

 delfunc s:gen_cmd
endfunc

func Test_scope_dict()
 " Test for g:
 call s:check_scope_dict('g', v:false)

 " Test for s:
 call s:check_scope_dict('s', v:false)

 " Test for l:
 call s:check_scope_dict('l', v:false)

 " Test for a:
 call s:check_scope_dict('a', v:true)

 " Test for b:
 call s:check_scope_dict('b', v:false)

 " Test for w:
 call s:check_scope_dict('w', v:false)

 " Test for t:
 call s:check_scope_dict('t', v:false)

 " Test for v:
 call s:check_scope_dict('v', v:true)
endfunc

" Test for deep nesting of lists (> 100)
func Test_deep_nested_list()
 let deep_list = []
 let l = deep_list
 for i in range(102)
   let newlist = []
   call add(l, newlist)
   let l = newlist
 endfor
 call add(l, 102)

 call assert_fails('let m = deepcopy(deep_list)', 'E698:')
 call assert_fails('lockvar 110 deep_list', 'E743:')
 call assert_fails('unlockvar 110 deep_list', 'E743:')
 " Nvim implements :echo very differently
 " call assert_fails('let x = execute("echo deep_list")', 'E724:')
 call test_garbagecollect_now()
 unlet deep_list
endfunc

" Test for deep nesting of dicts (> 100)
func Test_deep_nested_dict()
 let deep_dict = {}
 let d = deep_dict
 for i in range(102)
   let newdict = {}
   let d.k = newdict
   let d = newdict
 endfor
 let d.k = 'v'

 call assert_fails('let m = deepcopy(deep_dict)', 'E698:')
 call assert_fails('lockvar 110 deep_dict', 'E743:')
 call assert_fails('unlockvar 110 deep_dict', 'E743:')
 " Nvim implements :echo very differently
 " call assert_fails('let x = execute("echo deep_dict")', 'E724:')
 call test_garbagecollect_now()
 unlet deep_dict
endfunc

" List and dict indexing tests
func Test_listdict_index()
 call CheckLegacyAndVim9Failure(['echo function("min")[0]'], 'E695:')
 call CheckLegacyAndVim9Failure(['echo v:true[0]'], 'E909:')
 call CheckLegacyAndVim9Failure(['echo v:null[0]'], 'E909:')
 call CheckLegacyAndVim9Failure(['VAR d = {"k": 10}', 'echo d.'], ['E15:', 'E1127:', 'E15:'])
 call CheckLegacyAndVim9Failure(['VAR d = {"k": 10}', 'echo d[1 : 2]'], 'E719:')

 call assert_fails("let v = [4, 6][{-> 1}]", 'E729:')
 call CheckDefAndScriptFailure(['var v = [4, 6][() => 1]'], ['E1012:', 'E703:'])

 call CheckLegacyAndVim9Failure(['VAR v = range(5)[2 : []]'], ['E730:', 'E1012:', 'E730:'])

 call assert_fails("let v = range(5)[2:{-> 2}(]", ['E15:', 'E116:'])
 call CheckDefAndScriptFailure(['var v = range(5)[2 : () => 2(]'], 'E15:')

 call CheckLegacyAndVim9Failure(['VAR v = range(5)[2 : 3'], ['E111:', 'E1097:', 'E111:'])
 call CheckLegacyAndVim9Failure(['VAR l = insert([1, 2, 3], 4, 10)'], 'E684:')
 call CheckLegacyAndVim9Failure(['VAR l = insert([1, 2, 3], 4, -10)'], 'E684:')
 call CheckLegacyAndVim9Failure(['VAR l = insert([1, 2, 3], 4, [])'], ['E745:', 'E1013:', 'E1210:'])

 call CheckLegacyAndVim9Failure(['VAR l = [1, 2, 3]', 'LET l[i] = 3'], ['E121:', 'E1001:', 'E121:'])
 call CheckLegacyAndVim9Failure(['VAR l = [1, 2, 3]', 'LET l[1.1] = 4'], ['E805:', 'E1012:', 'E805:'])
 call CheckLegacyAndVim9Failure(['VAR l = [1, 2, 3]', 'LET l[: i] = [4, 5]'], ['E121:', 'E1001:', 'E121:'])
 call CheckLegacyAndVim9Failure(['VAR l = [1, 2, 3]', 'LET l[: 3.2] = [4, 5]'], ['E805:', 'E1012:', 'E805:'])
 " call CheckLegacyAndVim9Failure(['VAR t = test_unknown()', 'echo t[0]'], ['E685:', 'E909:', 'E685:'])
endfunc

" Test for a null list
func Test_null_list()
 let l = v:_null_list
 call assert_equal('', join(l))
 call assert_equal(0, len(l))
 call assert_equal(1, empty(l))
 call assert_fails('let s = join([1, 2], [])', 'E730:')
 call assert_equal([], split(v:_null_string))
 call assert_equal([], l[:2])
 call assert_true([] == l)
 call assert_equal('[]', string(l))
 " call assert_equal(0, sort(l))
 " call assert_equal(0, sort(l))
 " call assert_equal(0, uniq(l))
 let k = [] + l
 call assert_equal([], k)
 let k = l + []
 call assert_equal([], k)
 call assert_equal(0, len(copy(l)))
 call assert_equal(0, count(l, 5))
 call assert_equal([], deepcopy(l))
 call assert_equal(5, get(l, 2, 5))
 call assert_equal(-1, index(l, 2, 5))
 " call assert_equal(0, insert(l, 2, -1))
 call assert_equal(0, min(l))
 call assert_equal(0, max(l))
 " call assert_equal(0, remove(l, 0, 2))
 call assert_equal([], repeat(l, 2))
 " call assert_equal(0, reverse(l))
 " call assert_equal(0, sort(l))
 call assert_equal('[]', string(l))
 " call assert_equal(0, extend(l, l, 0))
 lockvar l
 call assert_equal(1, islocked('l'))
 unlockvar l
endfunc

" Test for a null dict
func Test_null_dict()
 call assert_equal(v:_null_dict, v:_null_dict)
 let d = v:_null_dict
 call assert_equal({}, d)
 call assert_equal(0, len(d))
 call assert_equal(1, empty(d))
 call assert_equal([], items(d))
 call assert_equal([], keys(d))
 call assert_equal([], values(d))
 call assert_false(has_key(d, 'k'))
 call assert_equal('{}', string(d))
 call assert_fails('let x = d[10]')
 call assert_equal({}, {})
 call assert_equal(0, len(copy(d)))
 call assert_equal(0, count(d, 'k'))
 call assert_equal({}, deepcopy(d))
 call assert_equal(20, get(d, 'k', 20))
 call assert_equal(0, min(d))
 call assert_equal(0, max(d))
 call assert_equal(0, remove(d, 'k'))
 call assert_equal('{}', string(d))
 " call assert_equal(0, extend(d, d, 0))
 lockvar d
 call assert_equal(1, islocked('d'))
 unlockvar d
endfunc

" Test for the indexof() function
func Test_indexof()
 let l = [#{color: 'red'}, #{color: 'blue'}, #{color: 'green'}]
 call assert_equal(0, indexof(l, {i, v -> v.color == 'red'}))
 call assert_equal(2, indexof(l, {i, v -> v.color == 'green'}))
 call assert_equal(-1, indexof(l, {i, v -> v.color == 'grey'}))
 call assert_equal(1, indexof(l, "v:val.color == 'blue'"))
 call assert_equal(-1, indexof(l, "v:val.color == 'cyan'"))

 let l = [#{n: 10}, #{n: 10}, #{n: 20}]
 call assert_equal(0, indexof(l, "v:val.n == 10", #{startidx: 0}))
 call assert_equal(1, indexof(l, "v:val.n == 10", #{startidx: -2}))
 call assert_equal(-1, indexof(l, "v:val.n == 10", #{startidx: 4}))
 call assert_equal(-1, indexof(l, "v:val.n == 10", #{startidx: -4}))
 call assert_equal(0, indexof(l, "v:val.n == 10", v:_null_dict))

 let s = ["a", "b", "c"]
 call assert_equal(2, indexof(s, {_, v -> v == 'c'}))
 call assert_equal(-1, indexof(s, {_, v -> v == 'd'}))
 call assert_equal(-1, indexof(s, {_, v -> "v == 'd'"}))

 call assert_equal(-1, indexof([], {i, v -> v == 'a'}))
 call assert_equal(-1, indexof([1, 2, 3], {_, v -> "v == 2"}))
 call assert_equal(-1, indexof(v:_null_list, {i, v -> v == 'a'}))
 call assert_equal(-1, indexof(l, v:_null_string))
 " Nvim doesn't have null functions
 " call assert_equal(-1, indexof(l, test_null_function()))
 call assert_equal(-1, indexof(l, ""))
 call assert_fails('let i = indexof(l, " ")', 'E15:')

 " failure cases
 call assert_fails('let i = indexof(l, "v:val == ''cyan''")', 'E735:')
 call assert_fails('let i = indexof(l, "color == ''cyan''")', 'E121:')
 call assert_fails('let i = indexof(l, {})', 'E1256:')
 call assert_fails('let i = indexof({}, "v:val == 2")', 'E1226:')
 call assert_fails('let i = indexof([], "v:val == 2", [])', 'E1206:')

 func TestIdx(k, v)
   return a:v.n == 20
 endfunc
 call assert_equal(2, indexof(l, function("TestIdx")))
 delfunc TestIdx
 func TestIdx(k, v)
   return {}
 endfunc
 call assert_fails('let i = indexof(l, function("TestIdx"))', 'E728:')
 delfunc TestIdx
 func TestIdx(k, v)
   throw "IdxError"
 endfunc
 call assert_fails('let i = indexof(l, function("TestIdx"))', 'E605:')
 delfunc TestIdx
endfunc

func Test_extendnew_leak()
 " This used to leak memory
 for i in range(100) | silent! call extendnew([], [], []) | endfor
 for i in range(100) | silent! call extendnew({}, {}, {}) | endfor
endfunc

" Test for comparing deeply nested List/Dict values
func Test_deep_nested_listdict_compare()
 let lines =<< trim END
   func GetNestedList(sz)
     let l = []
     let x = l
     for i in range(a:sz)
       let y = [1]
       call add(x, y)
       let x = y
     endfor
     return l
   endfunc

   VAR l1 = GetNestedList(1000)
   VAR l2 = GetNestedList(999)
   call assert_false(l1 == l2)

   #" after 1000 nested items, the lists are considered to be equal
   VAR l3 = GetNestedList(1001)
   VAR l4 = GetNestedList(1002)
   call assert_true(l3 == l4)
 END
 call CheckLegacyAndVim9Success(lines)

 let lines =<< trim END
   func GetNestedDict(sz)
     let d = {}
     let x = d
     for i in range(a:sz)
       let y = {}
       let x['a'] = y
       let x = y
     endfor
     return d
   endfunc

   VAR d1 = GetNestedDict(1000)
   VAR d2 = GetNestedDict(999)
   call assert_false(d1 == d2)

   #" after 1000 nested items, the Dicts are considered to be equal
   VAR d3 = GetNestedDict(1001)
   VAR d4 = GetNestedDict(1002)
   call assert_true(d3 == d4)
 END
 call CheckLegacyAndVim9Success(lines)
endfunc

" vim: shiftwidth=2 sts=2 expandtab