xref: /vim-8.2.3635/src/testdir/test_lua.vim (revision ce7be3a0) 
1" Tests for Lua.
2
3source check.vim
4
5" This test also works without the lua feature.
6func Test_skip_lua()
7  if 0
8    lua print("Not executed")
9  endif
10endfunc
11
12CheckFeature lua
13CheckFeature float
14
15let s:luaver = split(split(luaeval('_VERSION'), ' ')[1], '\.')
16let s:major = str2nr(s:luaver[0])
17let s:minor = str2nr(s:luaver[1])
18if s:major < 5 || (s:major == 5 && s:minor < 3)
19  let s:lua_53_or_later = 0
20else
21  let s:lua_53_or_later = 1
22endif
23
24func TearDown()
25  " Run garbage collection after each test to exercise luaV_setref().
26  call test_garbagecollect_now()
27endfunc
28
29" Check that switching to another buffer does not trigger ml_get error.
30func Test_lua_command_new_no_ml_get_error()
31  new
32  let wincount = winnr('$')
33  call setline(1, ['one', 'two', 'three'])
34  luado vim.command("new")
35  call assert_equal(wincount + 1, winnr('$'))
36  %bwipe!
37endfunc
38
39" Test vim.command()
40func Test_lua_command()
41  new
42  call setline(1, ['one', 'two', 'three'])
43  luado vim.command("1,2d_")
44  call assert_equal(['three'], getline(1, '$'))
45  bwipe!
46endfunc
47
48func Test_lua_luado()
49  new
50  call setline(1, ['one', 'two'])
51  luado return(linenr)
52  call assert_equal(['1', '2'], getline(1, '$'))
53  close!
54
55  " Error cases
56  call assert_fails('luado string.format()',
57        \ "[string \"vim chunk\"]:1: bad argument #1 to 'format' (string expected, got no value)")
58  call assert_fails('luado func()',
59        \ s:lua_53_or_later
60        \ ? "[string \"vim chunk\"]:1: attempt to call a nil value (global 'func')"
61        \ : "[string \"vim chunk\"]:1: attempt to call global 'func' (a nil value)")
62  call assert_fails('luado error("failed")', "[string \"vim chunk\"]:1: failed")
63endfunc
64
65" Test vim.eval()
66func Test_lua_eval()
67  " lua.eval with a number
68  lua v = vim.eval('123')
69  call assert_equal('number', luaeval('vim.type(v)'))
70  call assert_equal(123, luaeval('v'))
71
72  " lua.eval with a string
73  lua v = vim.eval('"abc"')
74  call assert_equal('string', 'vim.type(v)'->luaeval())
75  call assert_equal('abc', luaeval('v'))
76
77  " lua.eval with a list
78  lua v = vim.eval("['a']")
79  call assert_equal('list', luaeval('vim.type(v)'))
80  call assert_equal(['a'], luaeval('v'))
81
82  " lua.eval with a dict
83  lua v = vim.eval("{'a':'b'}")
84  call assert_equal('dict', luaeval('vim.type(v)'))
85  call assert_equal({'a':'b'}, luaeval('v'))
86
87  " lua.eval with a blob
88  lua v = vim.eval("0z00112233.deadbeef")
89  call assert_equal('blob', luaeval('vim.type(v)'))
90  call assert_equal(0z00112233.deadbeef, luaeval('v'))
91
92  " lua.eval with a float
93  lua v = vim.eval('3.14')
94  call assert_equal('number', luaeval('vim.type(v)'))
95  call assert_equal(3.14, luaeval('v'))
96
97  " lua.eval with a bool
98  lua v = vim.eval('v:true')
99  call assert_equal('number', luaeval('vim.type(v)'))
100  call assert_equal(1, luaeval('v'))
101  lua v = vim.eval('v:false')
102  call assert_equal('number', luaeval('vim.type(v)'))
103  call assert_equal(0, luaeval('v'))
104
105  " lua.eval with a null
106  lua v = vim.eval('v:null')
107  call assert_equal('nil', luaeval('vim.type(v)'))
108  call assert_equal(v:null, luaeval('v'))
109
110  call assert_fails('lua v = vim.eval(nil)',
111        \ "[string \"vim chunk\"]:1: bad argument #1 to 'eval' (string expected, got nil)")
112  call assert_fails('lua v = vim.eval(true)',
113        \ "[string \"vim chunk\"]:1: bad argument #1 to 'eval' (string expected, got boolean)")
114  call assert_fails('lua v = vim.eval({})',
115        \ "[string \"vim chunk\"]:1: bad argument #1 to 'eval' (string expected, got table)")
116  call assert_fails('lua v = vim.eval(print)',
117        \ "[string \"vim chunk\"]:1: bad argument #1 to 'eval' (string expected, got function)")
118  call assert_fails('lua v = vim.eval(vim.buffer())',
119        \ "[string \"vim chunk\"]:1: bad argument #1 to 'eval' (string expected, got userdata)")
120
121  lua v = nil
122endfunc
123
124" Test vim.window()
125func Test_lua_window()
126  e Xfoo2
127  new Xfoo1
128
129  " Window 1 (top window) contains Xfoo1
130  " Window 2 (bottom window) contains Xfoo2
131  call assert_equal('Xfoo1', luaeval('vim.window(1):buffer().name'))
132  call assert_equal('Xfoo2', luaeval('vim.window(2):buffer().name'))
133
134  " Window 3 does not exist so vim.window(3) should return nil
135  call assert_equal('nil', luaeval('tostring(vim.window(3))'))
136
137  call assert_fails("let n = luaeval('vim.window().xyz()')",
138        \ s:lua_53_or_later
139        \ ? "[string \"luaeval\"]:1: attempt to call a nil value (field 'xyz')"
140        \ : "[string \"luaeval\"]:1: attempt to call field 'xyz' (a nil value)")
141  call assert_fails('lua vim.window().xyz = 1',
142        \ "[string \"vim chunk\"]:1: invalid window property: `xyz'")
143
144  %bwipe!
145endfunc
146
147" Test vim.window().height
148func Test_lua_window_height()
149  new
150  lua vim.window().height = 2
151  call assert_equal(2, winheight(0))
152  lua vim.window().height = vim.window().height + 1
153  call assert_equal(3, winheight(0))
154  bwipe!
155endfunc
156
157" Test vim.window().width
158func Test_lua_window_width()
159  vert new
160  lua vim.window().width = 2
161  call assert_equal(2, winwidth(0))
162  lua vim.window().width = vim.window().width + 1
163  call assert_equal(3, winwidth(0))
164  bwipe!
165endfunc
166
167" Test vim.window().line and vim.window.col
168func Test_lua_window_line_col()
169  new
170  call setline(1, ['line1', 'line2', 'line3'])
171  lua vim.window().line = 2
172  lua vim.window().col = 4
173  call assert_equal([0, 2, 4, 0], getpos('.'))
174  lua vim.window().line = vim.window().line + 1
175  lua vim.window().col = vim.window().col - 1
176  call assert_equal([0, 3, 3, 0], getpos('.'))
177
178  call assert_fails('lua vim.window().line = 10',
179        \           '[string "vim chunk"]:1: line out of range')
180  bwipe!
181endfunc
182
183" Test vim.call
184func Test_lua_call()
185  call assert_equal(has('lua'), luaeval('vim.call("has", "lua")'))
186  call assert_equal(printf("Hello %s", "vim"), luaeval('vim.call("printf", "Hello %s", "vim")'))
187
188  " Error cases
189  call assert_fails("call luaeval('vim.call(\"min\", 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)')",
190        \ s:lua_53_or_later
191        \ ? '[string "luaeval"]:1: Function called with too many arguments'
192        \ : 'Function called with too many arguments')
193  lua co = coroutine.create(function () print("hi") end)
194  call assert_fails("call luaeval('vim.call(\"type\", co)')",
195        \ s:lua_53_or_later
196        \ ? '[string "luaeval"]:1: lua: cannot convert value'
197        \ : 'lua: cannot convert value')
198  lua co = nil
199  call assert_fails("call luaeval('vim.call(\"abc\")')",
200        \ ['E117:', s:lua_53_or_later ? '\[string "luaeval"]:1: lua: call_vim_function failed'
201        \                             : 'lua: call_vim_function failed'])
202endfunc
203
204" Test vim.fn.*
205func Test_lua_fn()
206  call assert_equal(has('lua'), luaeval('vim.fn.has("lua")'))
207  call assert_equal(printf("Hello %s", "vim"), luaeval('vim.fn.printf("Hello %s", "vim")'))
208endfunc
209
210" Test setting the current window
211func Test_lua_window_set_current()
212  new Xfoo1
213  lua w1 = vim.window()
214  new Xfoo2
215  lua w2 = vim.window()
216
217  call assert_equal('Xfoo2', bufname('%'))
218  lua w1()
219  call assert_equal('Xfoo1', bufname('%'))
220  lua w2()
221  call assert_equal('Xfoo2', bufname('%'))
222
223  lua w1, w2 = nil
224  %bwipe!
225endfunc
226
227" Test vim.window().buffer
228func Test_lua_window_buffer()
229  new Xfoo1
230  lua w1 = vim.window()
231  lua b1 = w1.buffer()
232  new Xfoo2
233  lua w2 = vim.window()
234  lua b2 = w2.buffer()
235
236  lua b1()
237  call assert_equal('Xfoo1', bufname('%'))
238  lua b2()
239  call assert_equal('Xfoo2', bufname('%'))
240
241  lua b1, b2, w1, w2 = nil
242  %bwipe!
243endfunc
244
245" Test vim.window():previous() and vim.window():next()
246func Test_lua_window_next_previous()
247  new Xfoo1
248  new Xfoo2
249  new Xfoo3
250  wincmd j
251
252  call assert_equal('Xfoo2', luaeval('vim.window().buffer().name'))
253  call assert_equal('Xfoo1', luaeval('vim.window():next():buffer().name'))
254  call assert_equal('Xfoo3', luaeval('vim.window():previous():buffer().name'))
255
256  %bwipe!
257endfunc
258
259" Test vim.window():isvalid()
260func Test_lua_window_isvalid()
261  new Xfoo
262  lua w = vim.window()
263  call assert_true(luaeval('w:isvalid()'))
264
265  " FIXME: how to test the case when isvalid() returns v:false?
266  " isvalid() gives errors when the window is deleted. Is it a bug?
267
268  lua w = nil
269  bwipe!
270endfunc
271
272" Test vim.buffer() with and without argument
273func Test_lua_buffer()
274  new Xfoo1
275  let bn1 = bufnr('%')
276  new Xfoo2
277  let bn2 = bufnr('%')
278
279  " Test vim.buffer() without argument.
280  call assert_equal('Xfoo2', luaeval("vim.buffer().name"))
281
282  " Test vim.buffer() with string argument.
283  call assert_equal('Xfoo1', luaeval("vim.buffer('Xfoo1').name"))
284  call assert_equal('Xfoo2', luaeval("vim.buffer('Xfoo2').name"))
285
286  " Test vim.buffer() with integer argument.
287  call assert_equal('Xfoo1', luaeval("vim.buffer(" . bn1 . ").name"))
288  call assert_equal('Xfoo2', luaeval("vim.buffer(" . bn2 . ").name"))
289
290  lua bn1, bn2 = nil
291  %bwipe!
292endfunc
293
294" Test vim.buffer().name and vim.buffer().fname
295func Test_lua_buffer_name()
296  new
297  call assert_equal('', luaeval('vim.buffer().name'))
298  call assert_equal('', luaeval('vim.buffer().fname'))
299  bwipe!
300
301  new Xfoo
302  call assert_equal('Xfoo', luaeval('vim.buffer().name'))
303  call assert_equal(expand('%:p'), luaeval('vim.buffer().fname'))
304  bwipe!
305endfunc
306
307" Test vim.buffer().number
308func Test_lua_buffer_number()
309  " All numbers in Lua are floating points number (no integers).
310  call assert_equal(bufnr('%'), float2nr(luaeval('vim.buffer().number')))
311endfunc
312
313" Test inserting lines in buffer.
314func Test_lua_buffer_insert()
315  new
316  lua vim.buffer()[1] = '3'
317  lua vim.buffer():insert('1', 0)
318  lua vim.buffer():insert('2', 1)
319  lua vim.buffer():insert('4', 10)
320
321  call assert_equal(['1', '2', '3', '4'], getline(1, '$'))
322  call assert_equal('4', luaeval('vim.buffer()[4]'))
323  call assert_equal(v:null, luaeval('vim.buffer()[5]'))
324  call assert_equal(v:null, luaeval('vim.buffer()[{}]'))
325  call assert_fails('lua vim.buffer():xyz()',
326        \ s:lua_53_or_later
327        \ ? "[string \"vim chunk\"]:1: attempt to call a nil value (method 'xyz')"
328        \ : "[string \"vim chunk\"]:1: attempt to call method 'xyz' (a nil value)")
329  call assert_fails('lua vim.buffer()[1] = {}',
330        \ '[string "vim chunk"]:1: wrong argument to change')
331  bwipe!
332endfunc
333
334" Test deleting line in buffer
335func Test_lua_buffer_delete()
336  new
337  call setline(1, ['1', '2', '3'])
338  call cursor(3, 1)
339  lua vim.buffer()[2] = nil
340  call assert_equal(['1', '3'], getline(1, '$'))
341
342  call assert_fails('lua vim.buffer()[3] = nil',
343        \           '[string "vim chunk"]:1: invalid line number')
344  bwipe!
345endfunc
346
347" Test #vim.buffer() i.e. number of lines in buffer
348func Test_lua_buffer_number_lines()
349  new
350  call setline(1, ['a', 'b', 'c'])
351  call assert_equal(3, luaeval('#vim.buffer()'))
352  bwipe!
353endfunc
354
355" Test vim.buffer():next() and vim.buffer():previous()
356" Note that these functions get the next or previous buffers
357" but do not switch buffer.
358func Test_lua_buffer_next_previous()
359  new Xfoo1
360  new Xfoo2
361  new Xfoo3
362  b Xfoo2
363
364  lua bn = vim.buffer():next()
365  lua bp = vim.buffer():previous()
366
367  call assert_equal('Xfoo2', luaeval('vim.buffer().name'))
368  call assert_equal('Xfoo1', luaeval('bp.name'))
369  call assert_equal('Xfoo3', luaeval('bn.name'))
370
371  call assert_equal('Xfoo2', bufname('%'))
372
373  lua bn()
374  call assert_equal('Xfoo3', luaeval('vim.buffer().name'))
375  call assert_equal('Xfoo3', bufname('%'))
376
377  lua bp()
378  call assert_equal('Xfoo1', luaeval('vim.buffer().name'))
379  call assert_equal('Xfoo1', bufname('%'))
380
381  lua bn, bp = nil
382  %bwipe!
383endfunc
384
385" Test vim.buffer():isvalid()
386func Test_lua_buffer_isvalid()
387  new Xfoo
388  lua b = vim.buffer()
389  call assert_true(luaeval('b:isvalid()'))
390
391  " FIXME: how to test the case when isvalid() returns v:false?
392  " isvalid() gives errors when the buffer is wiped. Is it a bug?
393
394  lua b = nil
395  bwipe!
396endfunc
397
398func Test_lua_list()
399  call assert_equal([], luaeval('vim.list()'))
400
401  let l = []
402  lua l = vim.eval('l')
403  lua l:add(123)
404  lua l:add('abc')
405  lua l:add(true)
406  lua l:add(false)
407  lua l:add(nil)
408  lua l:add(vim.eval("[1, 2, 3]"))
409  lua l:add(vim.eval("{'a':1, 'b':2, 'c':3}"))
410  call assert_equal([123, 'abc', v:true, v:false, v:null, [1, 2, 3], {'a': 1, 'b': 2, 'c': 3}], l)
411  call assert_equal(7, luaeval('#l'))
412  call assert_match('^list: \%(0x\)\?\x\+$', luaeval('tostring(l)'))
413
414  lua l[1] = 124
415  lua l[6] = nil
416  lua l:insert('first')
417  lua l:insert('xx', 3)
418  call assert_fails('lua l:insert("xx", -20)',
419        \ '[string "vim chunk"]:1: invalid position')
420  call assert_equal(['first', 124, 'abc', 'xx', v:true, v:false, v:null, {'a': 1, 'b': 2, 'c': 3}], l)
421
422  lockvar 1 l
423  call assert_fails('lua l:add("x")', '[string "vim chunk"]:1: list is locked')
424  call assert_fails('lua l:insert(2)', '[string "vim chunk"]:1: list is locked')
425  call assert_fails('lua l[9] = 1', '[string "vim chunk"]:1: list is locked')
426
427  unlockvar l
428  let l = [1, 2]
429  lua ll = vim.eval('l')
430  let x = luaeval("ll[3]")
431  call assert_equal(v:null, x)
432  call assert_fails('let x = luaeval("ll:xyz(3)")',
433        \ s:lua_53_or_later
434        \ ? "[string \"luaeval\"]:1: attempt to call a nil value (method 'xyz')"
435        \ : "[string \"luaeval\"]:1: attempt to call method 'xyz' (a nil value)")
436  let y = luaeval("ll[{}]")
437  call assert_equal(v:null, y)
438
439  lua l = nil
440endfunc
441
442func Test_lua_list_table()
443  " See :help lua-vim
444  " Non-numeric keys should not be used to initialize the list
445  " so say = 'hi' should be ignored.
446  lua t = {3.14, 'hello', false, true, say = 'hi'}
447  call assert_equal([3.14, 'hello', v:false, v:true], luaeval('vim.list(t)'))
448  lua t = nil
449
450  call assert_fails('lua vim.list(1)', '[string "vim chunk"]:1: table expected, got number')
451  call assert_fails('lua vim.list("x")', '[string "vim chunk"]:1: table expected, got string')
452  call assert_fails('lua vim.list(print)', '[string "vim chunk"]:1: table expected, got function')
453  call assert_fails('lua vim.list(true)', '[string "vim chunk"]:1: table expected, got boolean')
454endfunc
455
456func Test_lua_list_table_insert_remove()
457  if !s:lua_53_or_later
458    throw 'Skipped: Lua version < 5.3'
459  endif
460
461  let l = [1, 2]
462  lua t = vim.eval('l')
463  lua table.insert(t, 10)
464  lua t[#t + 1] = 20
465  lua table.insert(t, 2, 30)
466  call assert_equal(l, [1, 30, 2, 10, 20])
467  lua table.remove(t, 2)
468  call assert_equal(l, [1, 2, 10, 20])
469  lua t[3] = nil
470  call assert_equal(l, [1, 2, 20])
471  lua removed_value = table.remove(t, 3)
472  call assert_equal(luaeval('removed_value'), 20)
473  lua t = nil
474  lua removed_value = nil
475  unlet l
476endfunc
477
478" Test l() i.e. iterator on list
479func Test_lua_list_iter()
480  lua l = vim.list():add('foo'):add('bar')
481  lua str = ''
482  lua for v in l() do str = str .. v end
483  call assert_equal('foobar', luaeval('str'))
484
485  lua str, l = nil
486endfunc
487
488func Test_lua_recursive_list()
489  lua l = vim.list():add(1):add(2)
490  lua l = l:add(l)
491
492  call assert_equal(1, luaeval('l[1]'))
493  call assert_equal(2, luaeval('l[2]'))
494
495  call assert_equal(1, luaeval('l[3][1]'))
496  call assert_equal(2, luaeval('l[3][2]'))
497
498  call assert_equal(1, luaeval('l[3][3][1]'))
499  call assert_equal(2, luaeval('l[3][3][2]'))
500
501  call assert_equal('[1, 2, [...]]', string(luaeval('l')))
502
503  call assert_match('^list: \%(0x\)\?\x\+$', luaeval('tostring(l)'))
504  call assert_equal(luaeval('tostring(l)'), luaeval('tostring(l[3])'))
505
506  call assert_equal(luaeval('l'), luaeval('l[3]'))
507  call assert_equal(luaeval('l'), luaeval('l[3][3]'))
508
509  lua l = nil
510endfunc
511
512func Test_lua_dict()
513  call assert_equal({}, luaeval('vim.dict()'))
514
515  let d = {}
516  lua d = vim.eval('d')
517  lua d[0] = 123
518  lua d[1] = "abc"
519  lua d[2] = true
520  lua d[3] = false
521  lua d[4] = vim.eval("[1, 2, 3]")
522  lua d[5] = vim.eval("{'a':1, 'b':2, 'c':3}")
523  call assert_equal({'0':123, '1':'abc', '2':v:true, '3':v:false, '4': [1, 2, 3], '5': {'a':1, 'b':2, 'c':3}}, d)
524  call assert_equal(6, luaeval('#d'))
525  call assert_match('^dict: \%(0x\)\?\x\+$', luaeval('tostring(d)'))
526
527  call assert_equal('abc', luaeval('d[1]'))
528  call assert_equal(v:null, luaeval('d[22]'))
529
530  lua d[0] = 124
531  lua d[4] = nil
532  call assert_equal({'0':124, '1':'abc', '2':v:true, '3':v:false, '5': {'a':1, 'b':2, 'c':3}}, d)
533
534  lockvar 1 d
535  call assert_fails('lua d[6] = 1', '[string "vim chunk"]:1: dict is locked')
536  unlockvar d
537
538  " Error case
539  lua d = {}
540  lua d[''] = 10
541  call assert_fails("let t = luaeval('vim.dict(d)')",
542        \ s:lua_53_or_later
543        \ ? '[string "luaeval"]:1: table has empty key'
544        \ : 'table has empty key')
545  let d = {}
546  lua x = vim.eval('d')
547  call assert_fails("lua x[''] = 10", '[string "vim chunk"]:1: empty key')
548  lua x['a'] = nil
549  call assert_equal({}, d)
550
551  " cannot assign funcrefs in the global scope
552  lua x = vim.eval('g:')
553  call assert_fails("lua x['min'] = vim.funcref('max')",
554        \ '[string "vim chunk"]:1: cannot assign funcref to builtin scope')
555
556  lua d = nil
557endfunc
558
559func Test_lua_dict_table()
560  lua t = {key1 = 'x', key2 = 3.14, key3 = true, key4 = false}
561  call assert_equal({'key1': 'x', 'key2': 3.14, 'key3': v:true, 'key4': v:false},
562        \           luaeval('vim.dict(t)'))
563
564  " Same example as in :help lua-vim.
565  lua t = {math.pi, false, say = 'hi'}
566  " FIXME: commented out as it currently does not work as documented:
567  " Expected {'say': 'hi'}
568  " but got {'1': 3.141593, '2': v:false, 'say': 'hi'}
569  " Is the documentation or the code wrong?
570  "call assert_equal({'say' : 'hi'}, luaeval('vim.dict(t)'))
571  lua t = nil
572
573  call assert_fails('lua vim.dict(1)', '[string "vim chunk"]:1: table expected, got number')
574  call assert_fails('lua vim.dict("x")', '[string "vim chunk"]:1: table expected, got string')
575  call assert_fails('lua vim.dict(print)', '[string "vim chunk"]:1: table expected, got function')
576  call assert_fails('lua vim.dict(true)', '[string "vim chunk"]:1: table expected, got boolean')
577endfunc
578
579" Test d() i.e. iterator on dictionary
580func Test_lua_dict_iter()
581  let d = {'a': 1, 'b':2}
582  lua d = vim.eval('d')
583  lua str = ''
584  lua for k,v in d() do str = str .. k ..':' .. v .. ',' end
585  call assert_equal('a:1,b:2,', luaeval('str'))
586
587  lua str, d = nil
588endfunc
589
590func Test_lua_blob()
591  call assert_equal(0z, luaeval('vim.blob("")'))
592  call assert_equal(0z31326162, luaeval('vim.blob("12ab")'))
593  call assert_equal(0z00010203, luaeval('vim.blob("\x00\x01\x02\x03")'))
594  call assert_equal(0z8081FEFF, luaeval('vim.blob("\x80\x81\xfe\xff")'))
595
596  lua b = vim.blob("\x00\x00\x00\x00")
597  call assert_equal(0z00000000, luaeval('b'))
598  call assert_equal(4, luaeval('#b'))
599  lua b[0], b[1], b[2], b[3] = 1, 32, 256, 0xff
600  call assert_equal(0z012000ff, luaeval('b'))
601  lua b[4] = string.byte("z", 1)
602  call assert_equal(0z012000ff.7a, luaeval('b'))
603  call assert_equal(5, luaeval('#b'))
604  call assert_fails('lua b[#b+1] = 0x80', '[string "vim chunk"]:1: index out of range')
605  lua b:add("12ab")
606  call assert_equal(0z012000ff.7a313261.62, luaeval('b'))
607  call assert_equal(9, luaeval('#b'))
608  call assert_fails('lua b:add(nil)', '[string "vim chunk"]:1: string expected, got nil')
609  call assert_fails('lua b:add(true)', '[string "vim chunk"]:1: string expected, got boolean')
610  call assert_fails('lua b:add({})', '[string "vim chunk"]:1: string expected, got table')
611  lua b = nil
612
613  let b = 0z0102
614  lua lb = vim.eval('b')
615  let n = luaeval('lb[1]')
616  call assert_equal(2, n)
617  let n = luaeval('lb[6]')
618  call assert_equal(v:null, n)
619  call assert_fails('let x = luaeval("lb:xyz(3)")',
620        \ s:lua_53_or_later
621        \ ? "[string \"luaeval\"]:1: attempt to call a nil value (method 'xyz')"
622        \ : "[string \"luaeval\"]:1: attempt to call method 'xyz' (a nil value)")
623  let y = luaeval("lb[{}]")
624  call assert_equal(v:null, y)
625
626  lockvar b
627  call assert_fails('lua lb[1] = 2', '[string "vim chunk"]:1: blob is locked')
628  call assert_fails('lua lb:add("12")', '[string "vim chunk"]:1: blob is locked')
629
630  " Error cases
631  lua t = {}
632  call assert_fails('lua b = vim.blob(t)',
633        \ '[string "vim chunk"]:1: string expected, got table')
634endfunc
635
636func Test_lua_funcref()
637  function I(x)
638    return a:x
639  endfunction
640  let R = function('I')
641  lua i1 = vim.funcref"I"
642  lua i2 = vim.eval"R"
643  lua msg = "funcref|test|" .. (#i2(i1) == #i1(i2) and "OK" or "FAIL")
644  lua msg = vim.funcref"tr"(msg, "|", " ")
645  call assert_equal("funcref test OK", luaeval('msg'))
646
647  " Error cases
648  call assert_fails('lua f1 = vim.funcref("")',
649        \ '[string "vim chunk"]:1: invalid function name: ')
650  call assert_fails('lua f1 = vim.funcref("10")',
651        \ '[string "vim chunk"]:1: invalid function name: 10')
652  let fname = test_null_string()
653  call assert_fails('lua f1 = vim.funcref(fname)',
654        \ "[string \"vim chunk\"]:1: bad argument #1 to 'funcref' (string expected, got nil)")
655  call assert_fails('lua vim.funcref("abc")()',
656        \ ['E117:', '\[string "vim chunk"]:1: cannot call funcref'])
657
658  " dict funcref
659  function Mylen() dict
660    return len(self.data)
661  endfunction
662  let l = [0, 1, 2, 3]
663  let mydict = {'data': l}
664  lua d = vim.eval"mydict"
665  lua d.len = vim.funcref"Mylen" -- assign d as 'self'
666  lua res = (d.len() == vim.funcref"len"(vim.eval"l")) and "OK" or "FAIL"
667  call assert_equal("OK", luaeval('res'))
668  call assert_equal(function('Mylen', {'data': l, 'len': function('Mylen')}), mydict.len)
669
670  lua i1, i2, msg, d, res = nil
671endfunc
672
673" Test vim.type()
674func Test_lua_type()
675  " The following values are identical to Lua's type function.
676  call assert_equal('string',   luaeval('vim.type("foo")'))
677  call assert_equal('number',   luaeval('vim.type(1)'))
678  call assert_equal('number',   luaeval('vim.type(1.2)'))
679  call assert_equal('function', luaeval('vim.type(print)'))
680  call assert_equal('table',    luaeval('vim.type({})'))
681  call assert_equal('boolean',  luaeval('vim.type(true)'))
682  call assert_equal('boolean',  luaeval('vim.type(false)'))
683  call assert_equal('nil',      luaeval('vim.type(nil)'))
684
685  " The following values are specific to Vim.
686  call assert_equal('window',   luaeval('vim.type(vim.window())'))
687  call assert_equal('buffer',   luaeval('vim.type(vim.buffer())'))
688  call assert_equal('list',     luaeval('vim.type(vim.list())'))
689  call assert_equal('dict',     luaeval('vim.type(vim.dict())'))
690  call assert_equal('funcref',  luaeval('vim.type(vim.funcref("Test_type"))'))
691endfunc
692
693" Test vim.open()
694func Test_lua_open()
695  call assert_notmatch('XOpen', execute('ls'))
696
697  " Open a buffer XOpen1, but do not jump to it.
698  lua b = vim.open('XOpen1')
699  call assert_equal('XOpen1', luaeval('b.name'))
700  call assert_equal('', bufname('%'))
701
702  call assert_match('XOpen1', execute('ls'))
703  call assert_notequal('XOpen2', bufname('%'))
704
705  " Open a buffer XOpen2 and jump to it.
706  lua b = vim.open('XOpen2')()
707  call assert_equal('XOpen2', luaeval('b.name'))
708  call assert_equal('XOpen2', bufname('%'))
709
710  lua b = nil
711  %bwipe!
712endfunc
713
714func Test_update_package_paths()
715  set runtimepath+=./testluaplugin
716  call assert_equal("hello from lua", luaeval("require('testluaplugin').hello()"))
717endfunc
718
719func Vim_func_call_lua_callback(Concat, Cb)
720  let l:message = a:Concat("hello", "vim")
721  call a:Cb(l:message)
722endfunc
723
724func Test_pass_lua_callback_to_vim_from_lua()
725  lua pass_lua_callback_to_vim_from_lua_result = ""
726  call assert_equal("", luaeval("pass_lua_callback_to_vim_from_lua_result"))
727  lua <<EOF
728  vim.funcref('Vim_func_call_lua_callback')(
729    function(greeting, message)
730      return greeting .. " " .. message
731    end,
732    function(message)
733      pass_lua_callback_to_vim_from_lua_result = message
734    end)
735EOF
736  call assert_equal("hello vim", luaeval("pass_lua_callback_to_vim_from_lua_result"))
737endfunc
738
739func Vim_func_call_metatable_lua_callback(Greet)
740  return a:Greet("world")
741endfunc
742
743func Test_pass_lua_metatable_callback_to_vim_from_lua()
744  let result = luaeval("vim.funcref('Vim_func_call_metatable_lua_callback')(setmetatable({ space = ' '}, { __call = function(tbl, msg) return 'hello' .. tbl.space .. msg  end }) )")
745  call assert_equal("hello world", result)
746endfunc
747
748" Test vim.line()
749func Test_lua_line()
750  new
751  call setline(1, ['first line', 'second line'])
752  1
753  call assert_equal('first line', luaeval('vim.line()'))
754  2
755  call assert_equal('second line', luaeval('vim.line()'))
756  bwipe!
757endfunc
758
759" Test vim.beep()
760func Test_lua_beep()
761  call assert_beeps('lua vim.beep()')
762endfunc
763
764" Test errors in luaeval()
765func Test_luaeval_error()
766  " Compile error
767  call assert_fails("call luaeval('-nil')",
768  \ '[string "luaeval"]:1: attempt to perform arithmetic on a nil value')
769  call assert_fails("call luaeval(']')",
770  \ "[string \"luaeval\"]:1: unexpected symbol near ']'")
771  lua co = coroutine.create(function () print("hi") end)
772  call assert_fails('let i = luaeval("co")', 'luaeval: cannot convert value')
773  lua co = nil
774  call assert_fails('let m = luaeval("{}")', 'luaeval: cannot convert value')
775endfunc
776
777" Test :luafile foo.lua
778func Test_luafile()
779  call delete('Xlua_file')
780  call writefile(["str = 'hello'", "num = 123" ], 'Xlua_file')
781  call setfperm('Xlua_file', 'r-xr-xr-x')
782
783  luafile Xlua_file
784  call assert_equal('hello', luaeval('str'))
785  call assert_equal(123, luaeval('num'))
786
787  lua str, num = nil
788  call delete('Xlua_file')
789endfunc
790
791" Test :luafile %
792func Test_luafile_percent()
793  new Xlua_file
794  append
795    str, num = 'foo', 321.0
796    print(string.format('str=%s, num=%d', str, num))
797.
798  w!
799  luafile %
800  let msg = split(execute('message'), "\n")[-1]
801  call assert_equal('str=foo, num=321', msg)
802
803  lua str, num = nil
804  call delete('Xlua_file')
805  bwipe!
806endfunc
807
808" Test :luafile with syntax error
809func Test_luafile_error()
810  new Xlua_file
811  call writefile(['nil = 0' ], 'Xlua_file')
812  call setfperm('Xlua_file', 'r-xr-xr-x')
813
814  call assert_fails('luafile Xlua_file', "Xlua_file:1: unexpected symbol near 'nil'")
815
816  call delete('Xlua_file')
817  bwipe!
818endfunc
819
820" Test for dealing with strings containing newlines and null character
821func Test_lua_string_with_newline()
822  let x = execute('lua print("Hello\nWorld")')
823  call assert_equal("\nHello\nWorld", x)
824  new
825  lua k = vim.buffer(vim.eval('bufnr()'))
826  lua k:insert("Hello\0World", 0)
827  call assert_equal(["Hello\nWorld", ''], getline(1, '$'))
828  close!
829endfunc
830
831func Test_lua_set_cursor()
832  " Check that setting the cursor position works.
833  new
834  call setline(1, ['first line', 'second line'])
835  normal gg
836  lua << trim EOF
837    w = vim.window()
838    w.line = 1
839    w.col = 5
840  EOF
841  call assert_equal([1, 5], [line('.'), col('.')])
842
843  " Check that movement after setting cursor position keeps current column.
844  normal j
845  call assert_equal([2, 5], [line('.'), col('.')])
846endfunc
847
848" Test for various heredoc syntax
849func Test_lua_heredoc()
850  lua << END
851vim.command('let s = "A"')
852END
853  lua <<
854vim.command('let s ..= "B"')
855.
856  lua << trim END
857    vim.command('let s ..= "C"')
858  END
859  lua << trim
860    vim.command('let s ..= "D"')
861  .
862  lua << trim eof
863    vim.command('let s ..= "E"')
864  eof
865  call assert_equal('ABCDE', s)
866endfunc
867
868" vim: shiftwidth=2 sts=2 expandtab
869