1" Tests for the List and Dict types
2
3func TearDown()
4  " Run garbage collection after every test
5  call test_garbagecollect_now()
6endfunc
7
8" Tests for List type
9
10" List creation
11func Test_list_create()
12  " Creating List directly with different types
13  let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
14  call assert_equal("[1, 'as''d', [1, 2, function('strlen')], {'a': 1}]", string(l))
15  call assert_equal({'a' : 1}, l[-1])
16  call assert_equal(1, l[-4])
17  let x = 10
18  try
19    let x = l[-5]
20  catch
21    call assert_match('E684:', v:exception)
22  endtry
23  call assert_equal(10, x)
24endfunc
25
26" List slices
27func Test_list_slice()
28  let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
29  call assert_equal([1, 'as''d', [1, 2, function('strlen')], {'a': 1}], l[:])
30  call assert_equal(['as''d', [1, 2, function('strlen')], {'a': 1}], l[1:])
31  call assert_equal([1, 'as''d', [1, 2, function('strlen')]], l[:-2])
32  call assert_equal([1, 'as''d', [1, 2, function('strlen')], {'a': 1}], l[0:8])
33  call assert_equal([], l[8:-1])
34endfunc
35
36" List identity
37func Test_list_identity()
38  let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
39  let ll = l
40  let lx = copy(l)
41  call assert_true(l == ll)
42  call assert_false(l isnot ll)
43  call assert_true(l is ll)
44  call assert_true(l == lx)
45  call assert_false(l is lx)
46  call assert_true(l isnot lx)
47endfunc
48
49" removing items with :unlet
50func Test_list_unlet()
51  let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
52  unlet l[2]
53  call assert_equal([1, 'as''d', {'a': 1}], l)
54  let l = range(8)
55  unlet l[:3]
56  unlet l[1:]
57  call assert_equal([4], l)
58
59  " removing items out of range: silently skip items that don't exist
60  let l = [0, 1, 2, 3]
61  call assert_fails('unlet l[2:1]', 'E684')
62  let l = [0, 1, 2, 3]
63  unlet l[2:2]
64  call assert_equal([0, 1, 3], l)
65  let l = [0, 1, 2, 3]
66  unlet l[2:3]
67  call assert_equal([0, 1], l)
68  let l = [0, 1, 2, 3]
69  unlet l[2:4]
70  call assert_equal([0, 1], l)
71  let l = [0, 1, 2, 3]
72  unlet l[2:5]
73  call assert_equal([0, 1], l)
74  let l = [0, 1, 2, 3]
75  call assert_fails('unlet l[-1:2]', 'E684')
76  let l = [0, 1, 2, 3]
77  unlet l[-2:2]
78  call assert_equal([0, 1, 3], l)
79  let l = [0, 1, 2, 3]
80  unlet l[-3:2]
81  call assert_equal([0, 3], l)
82  let l = [0, 1, 2, 3]
83  unlet l[-4:2]
84  call assert_equal([3], l)
85  let l = [0, 1, 2, 3]
86  unlet l[-5:2]
87  call assert_equal([3], l)
88  let l = [0, 1, 2, 3]
89  unlet l[-6:2]
90  call assert_equal([3], l)
91endfunc
92
93" assignment to a list
94func Test_list_assign()
95  let l = [0, 1, 2, 3]
96  let [va, vb] = l[2:3]
97  call assert_equal([2, 3], [va, vb])
98  call assert_fails('let [va, vb] = l', 'E687')
99  call assert_fails('let [va, vb] = l[1:1]', 'E688')
100endfunc
101
102" test for range assign
103func Test_list_range_assign()
104  let l = [0]
105  let l[:] = [1, 2]
106  call assert_equal([1, 2], l)
107endfunc
108
109" Test removing items in list
110func Test_list_func_remove()
111  " Test removing 1 element
112  let l = [1, 2, 3, 4]
113  call assert_equal(1, remove(l, 0))
114  call assert_equal([2, 3, 4], l)
115
116  let l = [1, 2, 3, 4]
117  call assert_equal(2, remove(l, 1))
118  call assert_equal([1, 3, 4], l)
119
120  let l = [1, 2, 3, 4]
121  call assert_equal(4, remove(l, -1))
122  call assert_equal([1, 2, 3], l)
123
124  " Test removing range of element(s)
125  let l = [1, 2, 3, 4]
126  call assert_equal([3], remove(l, 2, 2))
127  call assert_equal([1, 2, 4], l)
128
129  let l = [1, 2, 3, 4]
130  call assert_equal([2, 3], remove(l, 1, 2))
131  call assert_equal([1, 4], l)
132
133  let l = [1, 2, 3, 4]
134  call assert_equal([2, 3], remove(l, -3, -2))
135  call assert_equal([1, 4], l)
136
137  " Test invalid cases
138  let l = [1, 2, 3, 4]
139  call assert_fails("call remove(l, 5)", 'E684:')
140  call assert_fails("call remove(l, 1, 5)", 'E684:')
141  call assert_fails("call remove(l, 3, 2)", 'E16:')
142  call assert_fails("call remove(1, 0)", 'E896:')
143  call assert_fails("call remove(l, l)", 'E745:')
144endfunc
145
146" Tests for Dictionary type
147
148func Test_dict()
149  " Creating Dictionary directly with different types
150  let d = {001: 'asd', 'b': [1, 2, function('strlen')], -1: {'a': 1},}
151  call assert_equal("{'1': 'asd', 'b': [1, 2, function('strlen')], '-1': {'a': 1}}", string(d))
152  call assert_equal('asd', d.1)
153  call assert_equal(['-1', '1', 'b'], sort(keys(d)))
154  call assert_equal(['asd', [1, 2, function('strlen')], {'a': 1}], values(d))
155  let v = []
156  for [key, val] in items(d)
157    call extend(v, [key, val])
158    unlet key val
159  endfor
160  call assert_equal(['1','asd','b',[1, 2, function('strlen')],'-1',{'a': 1}], v)
161
162  call extend(d, {3:33, 1:99})
163  call extend(d, {'b':'bbb', 'c':'ccc'}, "keep")
164  call assert_fails("call extend(d, {3:333,4:444}, 'error')", 'E737')
165  call assert_equal({'c': 'ccc', '1': 99, 'b': [1, 2, function('strlen')], '3': 33, '-1': {'a': 1}}, d)
166  call filter(d, 'v:key =~ ''[ac391]''')
167  call assert_equal({'c': 'ccc', '1': 99, '3': 33, '-1': {'a': 1}}, d)
168endfunc
169
170" Dictionary identity
171func Test_dict_identity()
172  let d = {001: 'asd', 'b': [1, 2, function('strlen')], -1: {'a': 1},}
173  let dd = d
174  let dx = copy(d)
175  call assert_true(d == dd)
176  call assert_false(d isnot dd)
177  call assert_true(d is dd)
178  call assert_true(d == dx)
179  call assert_false(d is dx)
180  call assert_true(d isnot dx)
181endfunc
182
183" removing items with :unlet
184func Test_dict_unlet()
185  let d = {'b':'bbb', '1': 99, '3': 33, '-1': {'a': 1}}
186  unlet d.b
187  unlet d[-1]
188  call assert_equal({'1': 99, '3': 33}, d)
189endfunc
190
191" manipulating a big Dictionary (hashtable.c has a border of 1000 entries)
192func Test_dict_big()
193  let d = {}
194  for i in range(1500)
195    let d[i] = 3000 - i
196  endfor
197  call assert_equal([3000, 2900, 2001, 1600, 1501], [d[0], d[100], d[999], d[1400], d[1499]])
198  let str = ''
199  try
200    let n = d[1500]
201  catch
202    let str=substitute(v:exception, '\v(.{14}).*( \d{4}).*', '\1\2', '')
203  endtry
204  call assert_equal('Vim(let):E716: 1500', str)
205
206  " lookup each items
207  for i in range(1500)
208    call assert_equal(3000 - i, d[i])
209  endfor
210  let i += 1
211
212  " delete even items
213  while i >= 2
214    let i -= 2
215    unlet d[i]
216  endwhile
217  call assert_equal('NONE', get(d, 1500 - 100, 'NONE'))
218  call assert_equal(2999, d[1])
219
220  " delete odd items, checking value, one intentionally wrong
221  let d[33] = 999
222  let i = 1
223  while i < 1500
224   if i != 33
225     call assert_equal(3000 - i, d[i])
226   else
227     call assert_equal(999, d[i])
228   endif
229   unlet d[i]
230   let i += 2
231  endwhile
232  call assert_equal({}, d)
233  unlet d
234endfunc
235
236" Dictionary function
237func Test_dict_func()
238  let d = {}
239  func d.func(a) dict
240    return a:a . len(self.data)
241  endfunc
242  let d.data = [1,2,3]
243  call assert_equal('len: 3', d.func('len: '))
244  let x = d.func('again: ')
245  call assert_equal('again: 3', x)
246  let Fn = d.func
247  call assert_equal('xxx3', Fn('xxx'))
248endfunc
249
250" Function in script-local List or Dict
251func Test_script_local_dict_func()
252  let g:dict = {}
253  function g:dict.func() dict
254    return 'g:dict.func' . self.foo[1] . self.foo[0]('asdf')
255  endfunc
256  let g:dict.foo = ['-', 2, 3]
257  call insert(g:dict.foo, function('strlen'))
258  call assert_equal('g:dict.func-4', g:dict.func())
259  unlet g:dict
260endfunc
261
262" Test removing items in la dictionary
263func Test_dict_func_remove()
264  let d = {1:'a', 2:'b', 3:'c'}
265  call assert_equal('b', remove(d, 2))
266  call assert_equal({1:'a', 3:'c'}, d)
267
268  call assert_fails("call remove(d, 1, 2)", 'E118:')
269  call assert_fails("call remove(d, 'a')", 'E716:')
270  call assert_fails("call remove(d, [])", 'E730:')
271endfunc
272
273" Nasty: remove func from Dict that's being called (works)
274func Test_dict_func_remove_in_use()
275  let d = {1:1}
276  func d.func(a)
277    return "a:" . a:a
278  endfunc
279  let expected = 'a:' . string(get(d, 'func'))
280  call assert_equal(expected, d.func(string(remove(d, 'func'))))
281endfunc
282
283" Nasty: deepcopy() dict that refers to itself (fails when noref used)
284func Test_dict_deepcopy()
285  let d = {1:1, 2:2}
286  let l = [4, d, 6]
287  let d[3] = l
288  let dc = deepcopy(d)
289  call assert_fails('call deepcopy(d, 1)', 'E698')
290  let l2 = [0, l, l, 3]
291  let l[1] = l2
292  let l3 = deepcopy(l2)
293  call assert_true(l3[1] is l3[2])
294endfunc
295
296" Locked variables
297func Test_list_locked_var()
298  let expected = [
299	      \ [['0000-000', 'ppppppp'],
300	      \  ['0000-000', 'ppppppp'],
301	      \  ['0000-000', 'ppppppp']],
302	      \ [['1000-000', 'ppppppF'],
303	      \  ['0000-000', 'ppppppp'],
304	      \  ['0000-000', 'ppppppp']],
305	      \ [['1100-100', 'ppFppFF'],
306	      \  ['0000-000', 'ppppppp'],
307	      \  ['0000-000', 'ppppppp']],
308	      \ [['1110-110', 'pFFpFFF'],
309	      \  ['0010-010', 'pFppFpp'],
310	      \  ['0000-000', 'ppppppp']],
311	      \ [['1111-111', 'FFFFFFF'],
312	      \  ['0011-011', 'FFpFFpp'],
313	      \  ['0000-000', 'ppppppp']]
314	      \ ]
315  for depth in range(5)
316    for u in range(3)
317      unlet! l
318      let l = [0, [1, [2, 3]], {4: 5, 6: {7: 8}}]
319      exe "lockvar " . depth . " l"
320      if u == 1
321        exe "unlockvar l"
322      elseif u == 2
323        exe "unlockvar " . depth . " l"
324      endif
325      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]")
326      call assert_equal(expected[depth][u][0], ps)
327      let ps = ''
328      try
329        let l[1][1][0] = 99
330        let ps .= 'p'
331      catch
332        let ps .= 'F'
333      endtry
334      try
335        let l[1][1] = [99]
336        let ps .= 'p'
337      catch
338        let ps .= 'F'
339      endtry
340      try
341        let l[1] = [99]
342        let ps .= 'p'
343      catch
344        let ps .= 'F'
345      endtry
346      try
347        let l[2]['6'][7] = 99
348        let ps .= 'p'
349      catch
350        let ps .= 'F'
351      endtry
352      try
353        let l[2][6] = {99: 99}
354        let ps .= 'p'
355      catch
356        let ps .= 'F'
357      endtry
358      try
359        let l[2] = {99: 99}
360        let ps .= 'p'
361      catch
362        let ps .= 'F'
363      endtry
364      try
365        let l = [99]
366        let ps .= 'p'
367      catch
368        let ps .= 'F'
369      endtry
370      call assert_equal(expected[depth][u][1], ps)
371    endfor
372  endfor
373endfunc
374
375" Unletting locked variables
376func Test_list_locked_var_unlet()
377  let expected = [
378	      \ [['0000-000', 'ppppppp'],
379	      \  ['0000-000', 'ppppppp'],
380	      \  ['0000-000', 'ppppppp']],
381	      \ [['1000-000', 'ppFppFp'],
382	      \  ['0000-000', 'ppppppp'],
383	      \  ['0000-000', 'ppppppp']],
384	      \ [['1100-100', 'pFFpFFp'],
385	      \  ['0000-000', 'ppppppp'],
386	      \  ['0000-000', 'ppppppp']],
387	      \ [['1110-110', 'FFFFFFp'],
388	      \  ['0010-010', 'FppFppp'],
389	      \  ['0000-000', 'ppppppp']],
390	      \ [['1111-111', 'FFFFFFp'],
391	      \  ['0011-011', 'FppFppp'],
392	      \  ['0000-000', 'ppppppp']]
393	      \ ]
394
395  for depth in range(5)
396    for u in range(3)
397      unlet! l
398      let l = [0, [1, [2, 3]], {4: 5, 6: {7: 8}}]
399      exe "lockvar " . depth . " l"
400      if u == 1
401        exe "unlockvar l"
402      elseif u == 2
403        exe "unlockvar " . depth . " l"
404      endif
405      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]")
406      call assert_equal(expected[depth][u][0], ps)
407      let ps = ''
408      try
409        unlet l[2]['6'][7]
410        let ps .= 'p'
411      catch
412        let ps .= 'F'
413      endtry
414      try
415        unlet l[2][6]
416        let ps .= 'p'
417      catch
418        let ps .= 'F'
419      endtry
420      try
421        unlet l[2]
422        let ps .= 'p'
423      catch
424        let ps .= 'F'
425      endtry
426      try
427        unlet l[1][1][0]
428        let ps .= 'p'
429      catch
430        let ps .= 'F'
431      endtry
432      try
433        unlet l[1][1]
434        let ps .= 'p'
435      catch
436        let ps .= 'F'
437      endtry
438      try
439        unlet l[1]
440        let ps .= 'p'
441      catch
442        let ps .= 'F'
443      endtry
444      try
445        unlet l
446        let ps .= 'p'
447      catch
448        let ps .= 'F'
449      endtry
450      call assert_equal(expected[depth][u][1], ps)
451    endfor
452  endfor
453endfunc
454
455" Locked variables and :unlet or list / dict functions
456
457" No :unlet after lock on dict:
458func Test_dict_lock_unlet()
459  unlet! d
460  let d = {'a': 99, 'b': 100}
461  lockvar 1 d
462  call assert_fails('unlet d.a', 'E741')
463endfunc
464
465" unlet after lock on dict item
466func Test_dict_item_lock_unlet()
467  unlet! d
468  let d = {'a': 99, 'b': 100}
469  lockvar d.a
470  unlet d.a
471  call assert_equal({'b' : 100}, d)
472endfunc
473
474" filter() after lock on dict item
475func Test_dict_lock_filter()
476  unlet! d
477  let d = {'a': 99, 'b': 100}
478  lockvar d.a
479  call filter(d, 'v:key != "a"')
480  call assert_equal({'b' : 100}, d)
481endfunc
482
483" map() after lock on dict
484func Test_dict_lock_map()
485  unlet! d
486  let d = {'a': 99, 'b': 100}
487  lockvar 1 d
488  call map(d, 'v:val + 200')
489  call assert_equal({'a' : 299, 'b' : 300}, d)
490endfunc
491
492" No extend() after lock on dict item
493func Test_dict_lock_extend()
494  unlet! d
495  let d = {'a': 99, 'b': 100}
496  lockvar d.a
497  call assert_fails("call extend(d, {'a' : 123})", 'E741')
498  call assert_equal({'a': 99, 'b': 100}, d)
499endfunc
500
501" No remove() of write-protected scope-level variable
502func Tfunc1(this_is_a_long_parameter_name)
503  call assert_fails("call remove(a:, 'this_is_a_long_parameter_name')", 'E795')
504endfunc
505func Test_dict_scope_var_remove()
506  call Tfunc1('testval')
507endfunc
508
509" No extend() of write-protected scope-level variable
510func Tfunc2(this_is_a_long_parameter_name)
511  call assert_fails("call extend(a:, {'this_is_a_long_parameter_name': 1234})", 'E742')
512endfunc
513func Test_dict_scope_var_extend()
514  call Tfunc2('testval')
515endfunc
516
517" No :unlet of variable in locked scope
518func Test_lock_var_unlet()
519  let b:testvar = 123
520  lockvar 1 b:
521  call assert_fails('unlet b:testvar', 'E741:')
522  unlockvar 1 b:
523  unlet! b:testvar
524endfunc
525
526" No :let += of locked list variable
527func Test_let_lock_list()
528  let l = ['a', 'b', 3]
529  lockvar 1 l
530  call assert_fails("let l += ['x']", 'E741:')
531  call assert_equal(['a', 'b', 3], l)
532
533  unlet l
534  let l = [1, 2, 3, 4]
535  lockvar! l
536  call assert_equal([1, 2, 3, 4], l)
537  unlockvar l[1]
538  call assert_fails('unlet l[0:1]', 'E741:')
539  call assert_equal([1, 2, 3, 4], l)
540  call assert_fails('unlet l[1:2]', 'E741:')
541  call assert_equal([1, 2, 3, 4], l)
542  unlockvar l[1]
543  call assert_fails('let l[0:1] = [0, 1]', 'E741:')
544  call assert_equal([1, 2, 3, 4], l)
545  call assert_fails('let l[1:2] = [0, 1]', 'E741:')
546  call assert_equal([1, 2, 3, 4], l)
547  unlet l
548endfunc
549
550" lockvar/islocked() triggering script autoloading
551func Test_lockvar_script_autoload()
552  let old_rtp = &rtp
553  set rtp+=./sautest
554  lockvar g:footest#x
555  unlockvar g:footest#x
556  call assert_equal(-1, islocked('g:footest#x'))
557  call assert_equal(0, exists('g:footest#x'))
558  call assert_equal(1, g:footest#x)
559  let &rtp = old_rtp
560endfunc
561
562" a:000 function argument test
563func s:arg_list_test(...)
564  call assert_fails('let a:000 = [1, 2]', 'E46:')
565  call assert_fails('let a:000[0] = 9', 'E742:')
566  call assert_fails('let a:000[2] = [9, 10]', 'E742:')
567  call assert_fails('let a:000[3] = {9 : 10}', 'E742:')
568
569  " now the tests that should pass
570  let a:000[2][1] = 9
571  call extend(a:000[2], [5, 6])
572  let a:000[3][5] = 8
573  let a:000[3]['a'] = 12
574  call assert_equal([1, 2, [3, 9, 5, 6], {'a': 12, '5': 8}], a:000)
575endfunc
576
577func Test_func_arg_list()
578  call s:arg_list_test(1, 2, [3, 4], {5: 6})
579endfunc
580
581" Tests for reverse(), sort(), uniq()
582func Test_reverse_sort_uniq()
583  let l = ['-0', 'A11', 2, 2, 'xaaa', 4, 'foo', 'foo6', 'foo', [0, 1, 2], 'x8', [0, 1, 2], 1.5]
584  call assert_equal(['-0', 'A11', 2, 'xaaa', 4, 'foo', 'foo6', 'foo', [0, 1, 2], 'x8', [0, 1, 2], 1.5], uniq(copy(l)))
585  call assert_equal([1.5, [0, 1, 2], 'x8', [0, 1, 2], 'foo', 'foo6', 'foo', 4, 'xaaa', 2, 2, 'A11', '-0'], reverse(l))
586  call assert_equal([1.5, [0, 1, 2], 'x8', [0, 1, 2], 'foo', 'foo6', 'foo', 4, 'xaaa', 2, 2, 'A11', '-0'], reverse(reverse(l)))
587  call assert_equal(['-0', 'A11', 'foo', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 2, 4, [0, 1, 2], [0, 1, 2]], sort(l))
588  call assert_equal([[0, 1, 2], [0, 1, 2], 4, 2, 2, 1.5, 'xaaa', 'x8', 'foo6', 'foo', 'foo', 'A11', '-0'], reverse(sort(l)))
589  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))))
590  call assert_equal(['-0', 'A11', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 4, [0, 1, 2]], uniq(sort(l)))
591
592  let l=[7, 9, 'one', 18, 12, 22, 'two', 10.0e-16, -1, 'three', 0xff, 0.22, 'four']
593  call assert_equal([-1, 'one', 'two', 'three', 'four', 1.0e-15, 0.22, 7, 9, 12, 18, 22, 255], sort(copy(l), 'n'))
594
595  let l=[7, 9, 18, 12, 22, 10.0e-16, -1, 0xff, 0, -0, 0.22, 'bar', 'BAR', 'Bar', 'Foo', 'FOO', 'foo', 'FOOBAR', {}, []]
596  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), 1))
597  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'))
598  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)))
599
600  call assert_fails('call reverse("")', 'E899:')
601endfunc
602
603" splitting a string to a List
604func Test_str_split()
605  call assert_equal(['aa', 'bb'], split('  aa  bb '))
606  call assert_equal(['aa', 'bb'], split('  aa  bb  ', '\W\+', 0))
607  call assert_equal(['', 'aa', 'bb', ''], split('  aa  bb  ', '\W\+', 1))
608  call assert_equal(['', '', 'aa', '', 'bb', '', ''], split('  aa  bb  ', '\W', 1))
609  call assert_equal(['aa', '', 'bb'], split(':aa::bb:', ':', 0))
610  call assert_equal(['', 'aa', '', 'bb', ''], split(':aa::bb:', ':', 1))
611  call assert_equal(['aa', '', 'bb', 'cc', ''], split('aa,,bb, cc,', ',\s*', 1))
612  call assert_equal(['a', 'b', 'c'], split('abc', '\zs'))
613  call assert_equal(['', 'a', '', 'b', '', 'c', ''], split('abc', '\zs', 1))
614endfunc
615
616" compare recursively linked list and dict
617func Test_listdict_compare()
618  let l = [1, 2, 3, 4]
619  let d = {'1': 1, '2': l, '3': 3}
620  let l[1] = d
621  call assert_true(l == l)
622  call assert_true(d == d)
623  call assert_false(l != deepcopy(l))
624  call assert_false(d != deepcopy(d))
625endfunc
626
627  " compare complex recursively linked list and dict
628func Test_listdict_compare_complex()
629  let l = []
630  call add(l, l)
631  let dict4 = {"l": l}
632  call add(dict4.l, dict4)
633  let lcopy = deepcopy(l)
634  let dict4copy = deepcopy(dict4)
635  call assert_true(l == lcopy)
636  call assert_true(dict4 == dict4copy)
637endfunc
638
639func Test_listdict_extend()
640  " Pass the same List to extend()
641  let l = [1, 2, 3, 4, 5]
642  call extend(l, l)
643  call assert_equal([1, 2, 3, 4, 5, 1, 2, 3, 4, 5], l)
644
645  " Pass the same Dict to extend()
646  let d = { 'a': {'b': 'B'}}
647  call extend(d, d)
648  call assert_equal({'a': {'b': 'B'}}, d)
649
650  " Pass the same Dict to extend() with "error"
651  call assert_fails("call extend(d, d, 'error')", 'E737:')
652  call assert_equal({'a': {'b': 'B'}}, d)
653endfunc
654