1" Test various aspects of the Vim script language.
2" Most of this was formerly in test49.
3
4source check.vim
5source shared.vim
6
7"-------------------------------------------------------------------------------
8" Test environment							    {{{1
9"-------------------------------------------------------------------------------
10
11com!		   XpathINIT  let g:Xpath = ''
12com! -nargs=1 -bar Xpath      let g:Xpath = g:Xpath . <args>
13
14" Append a message to the "messages" file
15func Xout(text)
16    split messages
17    $put =a:text
18    wq
19endfunc
20
21com! -nargs=1	     Xout     call Xout(<args>)
22
23" MakeScript() - Make a script file from a function.			    {{{2
24"
25" Create a script that consists of the body of the function a:funcname.
26" Replace any ":return" by a ":finish", any argument variable by a global
27" variable, and every ":call" by a ":source" for the next following argument
28" in the variable argument list.  This function is useful if similar tests are
29" to be made for a ":return" from a function call or a ":finish" in a script
30" file.
31func MakeScript(funcname, ...)
32    let script = tempname()
33    execute "redir! >" . script
34    execute "function" a:funcname
35    redir END
36    execute "edit" script
37    " Delete the "function" and the "endfunction" lines.  Do not include the
38    " word "function" in the pattern since it might be translated if LANG is
39    " set.  When MakeScript() is being debugged, this deletes also the debugging
40    " output of its line 3 and 4.
41    exec '1,/.*' . a:funcname . '(.*)/d'
42    /^\d*\s*endfunction\>/,$d
43    %s/^\d*//e
44    %s/return/finish/e
45    %s/\<a:\(\h\w*\)/g:\1/ge
46    normal gg0
47    let cnt = 0
48    while search('\<call\s*\%(\u\|s:\)\w*\s*(.*)', 'W') > 0
49	let cnt = cnt + 1
50	s/\<call\s*\%(\u\|s:\)\w*\s*(.*)/\='source ' . a:{cnt}/
51    endwhile
52    g/^\s*$/d
53    write
54    bwipeout
55    return script
56endfunc
57
58" ExecAsScript - Source a temporary script made from a function.	    {{{2
59"
60" Make a temporary script file from the function a:funcname, ":source" it, and
61" delete it afterwards.  However, if an exception is thrown the file may remain,
62" the caller should call DeleteTheScript() afterwards.
63let s:script_name = ''
64function! ExecAsScript(funcname)
65    " Make a script from the function passed as argument.
66    let s:script_name = MakeScript(a:funcname)
67
68    " Source and delete the script.
69    exec "source" s:script_name
70    call delete(s:script_name)
71    let s:script_name = ''
72endfunction
73
74function! DeleteTheScript()
75    if s:script_name
76	call delete(s:script_name)
77	let s:script_name = ''
78    endif
79endfunc
80
81com! -nargs=1 -bar ExecAsScript call ExecAsScript(<f-args>)
82
83
84"-------------------------------------------------------------------------------
85" Test 1:   :endwhile in function					    {{{1
86"
87"	    Detect if a broken loop is (incorrectly) reactivated by the
88"	    :endwhile.  Use a :return to prevent an endless loop, and make
89"	    this test first to get a meaningful result on an error before other
90"	    tests will hang.
91"-------------------------------------------------------------------------------
92
93function! T1_F()
94    Xpath 'a'
95    let first = 1
96    while 1
97	Xpath 'b'
98	if first
99	    Xpath 'c'
100	    let first = 0
101	    break
102	else
103	    Xpath 'd'
104	    return
105	endif
106    endwhile
107endfunction
108
109function! T1_G()
110    Xpath 'h'
111    let first = 1
112    while 1
113	Xpath 'i'
114	if first
115	    Xpath 'j'
116	    let first = 0
117	    break
118	else
119	    Xpath 'k'
120	    return
121	endif
122	if 1	" unmatched :if
123    endwhile
124endfunction
125
126func Test_endwhile_function()
127  XpathINIT
128  call T1_F()
129  Xpath 'F'
130
131  try
132    call T1_G()
133  catch
134    " Catch missing :endif
135    call assert_true(v:exception =~ 'E171')
136    Xpath 'x'
137  endtry
138  Xpath 'G'
139
140  call assert_equal('abcFhijxG', g:Xpath)
141endfunc
142
143"-------------------------------------------------------------------------------
144" Test 2:   :endwhile in script						    {{{1
145"
146"	    Detect if a broken loop is (incorrectly) reactivated by the
147"	    :endwhile.  Use a :finish to prevent an endless loop, and place
148"	    this test before others that might hang to get a meaningful result
149"	    on an error.
150"
151"	    This test executes the bodies of the functions T1_F and T1_G from
152"	    the previous test as script files (:return replaced by :finish).
153"-------------------------------------------------------------------------------
154
155func Test_endwhile_script()
156  XpathINIT
157  ExecAsScript T1_F
158  Xpath 'F'
159  call DeleteTheScript()
160
161  try
162    ExecAsScript T1_G
163  catch
164    " Catch missing :endif
165    call assert_true(v:exception =~ 'E171')
166    Xpath 'x'
167  endtry
168  Xpath 'G'
169  call DeleteTheScript()
170
171  call assert_equal('abcFhijxG', g:Xpath)
172endfunc
173
174"-------------------------------------------------------------------------------
175" Test 3:   :if, :elseif, :while, :continue, :break			    {{{1
176"-------------------------------------------------------------------------------
177
178function Test_if_while()
179    XpathINIT
180    if 1
181	Xpath 'a'
182	let loops = 3
183	while loops > -1	    " main loop: loops == 3, 2, 1 (which breaks)
184	    if loops <= 0
185		let break_err = 1
186		let loops = -1
187	    else
188		Xpath 'b' . loops
189	    endif
190	    if (loops == 2)
191		while loops == 2 " dummy loop
192		    Xpath 'c' . loops
193		    let loops = loops - 1
194		    continue    " stop dummy loop
195		    Xpath 'd' . loops
196		endwhile
197		continue	    " continue main loop
198		Xpath 'e' . loops
199	    elseif (loops == 1)
200		let p = 1
201		while p	    " dummy loop
202		    Xpath 'f' . loops
203		    let p = 0
204		    break	    " break dummy loop
205		    Xpath 'g' . loops
206		endwhile
207		Xpath 'h' . loops
208		unlet p
209		break	    " break main loop
210		Xpath 'i' . loops
211	    endif
212	    if (loops > 0)
213		Xpath 'j' . loops
214	    endif
215	    while loops == 3    " dummy loop
216		let loops = loops - 1
217	    endwhile	    " end dummy loop
218	endwhile		    " end main loop
219	Xpath 'k'
220    else
221	Xpath 'l'
222    endif
223    Xpath 'm'
224    if exists("break_err")
225	Xpath 'm'
226	unlet break_err
227    endif
228
229    unlet loops
230
231    call assert_equal('ab3j3b2c2b1f1h1km', g:Xpath)
232endfunc
233
234"-------------------------------------------------------------------------------
235" Test 4:   :return							    {{{1
236"-------------------------------------------------------------------------------
237
238function! T4_F()
239    if 1
240	Xpath 'a'
241	let loops = 3
242	while loops > 0				"    3:  2:     1:
243	    Xpath 'b' . loops
244	    if (loops == 2)
245		Xpath 'c' . loops
246		return
247		Xpath 'd' . loops
248	    endif
249	    Xpath 'e' . loops
250	    let loops = loops - 1
251	endwhile
252	Xpath 'f'
253    else
254	Xpath 'g'
255    endif
256endfunction
257
258function Test_return()
259    XpathINIT
260    call T4_F()
261    Xpath '4'
262
263    call assert_equal('ab3e3b2c24', g:Xpath)
264endfunction
265
266
267"-------------------------------------------------------------------------------
268" Test 5:   :finish							    {{{1
269"
270"	    This test executes the body of the function T4_F from the previous
271"	    test as a script file (:return replaced by :finish).
272"-------------------------------------------------------------------------------
273
274function Test_finish()
275    XpathINIT
276    ExecAsScript T4_F
277    Xpath '5'
278    call DeleteTheScript()
279
280    call assert_equal('ab3e3b2c25', g:Xpath)
281endfunction
282
283
284
285"-------------------------------------------------------------------------------
286" Test 6:   Defining functions in :while loops				    {{{1
287"
288"	     Functions can be defined inside other functions.  An inner function
289"	     gets defined when the outer function is executed.  Functions may
290"	     also be defined inside while loops.  Expressions in braces for
291"	     defining the function name are allowed.
292"
293"	     The functions are defined when sourcing the script, only the
294"	     resulting path is checked in the test function.
295"-------------------------------------------------------------------------------
296
297XpathINIT
298
299" The command CALL collects the argument of all its invocations in "calls"
300" when used from a function (that is, when the global variable "calls" needs
301" the "g:" prefix).  This is to check that the function code is skipped when
302" the function is defined.  For inner functions, do so only if the outer
303" function is not being executed.
304"
305let calls = ""
306com! -nargs=1 CALL
307	    \ if !exists("calls") && !exists("outer") |
308	    \ let g:calls = g:calls . <args> |
309	    \ endif
310
311let i = 0
312while i < 3
313    let i = i + 1
314    if i == 1
315	Xpath 'a'
316	function! F1(arg)
317	    CALL a:arg
318	    let outer = 1
319
320	    let j = 0
321	    while j < 1
322		Xpath 'b'
323		let j = j + 1
324		function! G1(arg)
325		    CALL a:arg
326		endfunction
327		Xpath 'c'
328	    endwhile
329	endfunction
330	Xpath 'd'
331
332	continue
333    endif
334
335    Xpath 'e' . i
336    function! F{i}(i, arg)
337	CALL a:arg
338	let outer = 1
339
340	if a:i == 3
341	    Xpath 'f'
342	endif
343	let k = 0
344	while k < 3
345	    Xpath 'g' . k
346	    let k = k + 1
347	    function! G{a:i}{k}(arg)
348		CALL a:arg
349	    endfunction
350	    Xpath 'h' . k
351	endwhile
352    endfunction
353    Xpath 'i'
354
355endwhile
356
357if exists("*G1")
358    Xpath 'j'
359endif
360if exists("*F1")
361    call F1("F1")
362    if exists("*G1")
363       call G1("G1")
364    endif
365endif
366
367if exists("G21") || exists("G22") || exists("G23")
368    Xpath 'k'
369endif
370if exists("*F2")
371    call F2(2, "F2")
372    if exists("*G21")
373       call G21("G21")
374    endif
375    if exists("*G22")
376       call G22("G22")
377    endif
378    if exists("*G23")
379       call G23("G23")
380    endif
381endif
382
383if exists("G31") || exists("G32") || exists("G33")
384    Xpath 'l'
385endif
386if exists("*F3")
387    call F3(3, "F3")
388    if exists("*G31")
389       call G31("G31")
390    endif
391    if exists("*G32")
392       call G32("G32")
393    endif
394    if exists("*G33")
395       call G33("G33")
396    endif
397endif
398
399Xpath 'm'
400
401let g:test6_result = g:Xpath
402let g:test6_calls = calls
403
404unlet calls
405delfunction F1
406delfunction G1
407delfunction F2
408delfunction G21
409delfunction G22
410delfunction G23
411delfunction G31
412delfunction G32
413delfunction G33
414
415function Test_defining_functions()
416    call assert_equal('ade2ie3ibcg0h1g1h2g2h3fg0h1g1h2g2h3m', g:test6_result)
417    call assert_equal('F1G1F2G21G22G23F3G31G32G33', g:test6_calls)
418endfunc
419
420"-------------------------------------------------------------------------------
421" Test 7:   Continuing on errors outside functions			    {{{1
422"
423"	    On an error outside a function, the script processing continues
424"	    at the line following the outermost :endif or :endwhile.  When not
425"	    inside an :if or :while, the script processing continues at the next
426"	    line.
427"-------------------------------------------------------------------------------
428
429XpathINIT
430
431if 1
432    Xpath 'a'
433    while 1
434	Xpath 'b'
435	asdf
436	Xpath 'c'
437	break
438    endwhile | Xpath 'd'
439    Xpath 'e'
440endif | Xpath 'f'
441Xpath 'g'
442
443while 1
444    Xpath 'h'
445    if 1
446	Xpath 'i'
447	asdf
448	Xpath 'j'
449    endif | Xpath 'k'
450    Xpath 'l'
451    break
452endwhile | Xpath 'm'
453Xpath 'n'
454
455asdf
456Xpath 'o'
457
458asdf | Xpath 'p'
459Xpath 'q'
460
461let g:test7_result = g:Xpath
462
463func Test_error_in_script()
464    call assert_equal('abghinoq', g:test7_result)
465endfunc
466
467"-------------------------------------------------------------------------------
468" Test 8:   Aborting and continuing on errors inside functions		    {{{1
469"
470"	    On an error inside a function without the "abort" attribute, the
471"	    script processing continues at the next line (unless the error was
472"	    in a :return command).  On an error inside a function with the
473"	    "abort" attribute, the function is aborted and the script processing
474"	    continues after the function call; the value -1 is returned then.
475"-------------------------------------------------------------------------------
476
477XpathINIT
478
479function! T8_F()
480    if 1
481	Xpath 'a'
482	while 1
483	    Xpath 'b'
484	    asdf
485	    Xpath 'c'
486	    asdf | Xpath 'd'
487	    Xpath 'e'
488	    break
489	endwhile
490	Xpath 'f'
491    endif | Xpath 'g'
492    Xpath 'h'
493
494    while 1
495	Xpath 'i'
496	if 1
497	    Xpath 'j'
498	    asdf
499	    Xpath 'k'
500	    asdf | Xpath 'l'
501	    Xpath 'm'
502	endif
503	Xpath 'n'
504	break
505    endwhile | Xpath 'o'
506    Xpath 'p'
507
508    return novar		" returns (default return value 0)
509    Xpath 'q'
510    return 1			" not reached
511endfunction
512
513function! T8_G() abort
514    if 1
515	Xpath 'r'
516	while 1
517	    Xpath 's'
518	    asdf		" returns -1
519	    Xpath 't'
520	    break
521	endwhile
522	Xpath 'v'
523    endif | Xpath 'w'
524    Xpath 'x'
525
526    return -4			" not reached
527endfunction
528
529function! T8_H() abort
530    while 1
531	Xpath 'A'
532	if 1
533	    Xpath 'B'
534	    asdf		" returns -1
535	    Xpath 'C'
536	endif
537	Xpath 'D'
538	break
539    endwhile | Xpath 'E'
540    Xpath 'F'
541
542    return -4			" not reached
543endfunction
544
545" Aborted functions (T8_G and T8_H) return -1.
546let g:test8_sum = (T8_F() + 1) - 4 * T8_G() - 8 * T8_H()
547Xpath 'X'
548let g:test8_result = g:Xpath
549
550func Test_error_in_function()
551    call assert_equal(13, g:test8_sum)
552    call assert_equal('abcefghijkmnoprsABX', g:test8_result)
553
554    delfunction T8_F
555    delfunction T8_G
556    delfunction T8_H
557endfunc
558
559
560"-------------------------------------------------------------------------------
561" Test 9:   Continuing after aborted functions				    {{{1
562"
563"	    When a function with the "abort" attribute is aborted due to an
564"	    error, the next function back in the call hierarchy without an
565"	    "abort" attribute continues; the value -1 is returned then.
566"-------------------------------------------------------------------------------
567
568XpathINIT
569
570function! F() abort
571    Xpath 'a'
572    let result = G()	" not aborted
573    Xpath 'b'
574    if result != 2
575	Xpath 'c'
576    endif
577    return 1
578endfunction
579
580function! G()		" no abort attribute
581    Xpath 'd'
582    if H() != -1	" aborted
583	Xpath 'e'
584    endif
585    Xpath 'f'
586    return 2
587endfunction
588
589function! H() abort
590    Xpath 'g'
591    call I()		" aborted
592    Xpath 'h'
593    return 4
594endfunction
595
596function! I() abort
597    Xpath 'i'
598    asdf		" error
599    Xpath 'j'
600    return 8
601endfunction
602
603if F() != 1
604    Xpath 'k'
605endif
606
607let g:test9_result = g:Xpath
608
609delfunction F
610delfunction G
611delfunction H
612delfunction I
613
614func Test_func_abort()
615    call assert_equal('adgifb', g:test9_result)
616endfunc
617
618
619"-------------------------------------------------------------------------------
620" Test 10:  :if, :elseif, :while argument parsing			    {{{1
621"
622"	    A '"' or '|' in an argument expression must not be mixed up with
623"	    a comment or a next command after a bar.  Parsing errors should
624"	    be recognized.
625"-------------------------------------------------------------------------------
626
627XpathINIT
628
629function! MSG(enr, emsg)
630    let english = v:lang == "C" || v:lang =~ '^[Ee]n'
631    if a:enr == ""
632	Xout "TODO: Add message number for:" a:emsg
633	let v:errmsg = ":" . v:errmsg
634    endif
635    let match = 1
636    if v:errmsg !~ '^'.a:enr.':' || (english && v:errmsg !~ a:emsg)
637	let match = 0
638	if v:errmsg == ""
639	    Xout "Message missing."
640	else
641	    let v:errmsg = v:errmsg->escape('"')
642	    Xout "Unexpected message:" v:errmsg
643	endif
644    endif
645    return match
646endfunc
647
648if 1 || strlen("\"") | Xpath 'a'
649    Xpath 'b'
650endif
651Xpath 'c'
652
653if 0
654elseif 1 || strlen("\"") | Xpath 'd'
655    Xpath 'e'
656endif
657Xpath 'f'
658
659while 1 || strlen("\"") | Xpath 'g'
660    Xpath 'h'
661    break
662endwhile
663Xpath 'i'
664
665let v:errmsg = ""
666if 1 ||| strlen("\"") | Xpath 'j'
667    Xpath 'k'
668endif
669Xpath 'l'
670if !MSG('E15', "Invalid expression")
671    Xpath 'm'
672endif
673
674let v:errmsg = ""
675if 0
676elseif 1 ||| strlen("\"") | Xpath 'n'
677    Xpath 'o'
678endif
679Xpath 'p'
680if !MSG('E15', "Invalid expression")
681    Xpath 'q'
682endif
683
684let v:errmsg = ""
685while 1 ||| strlen("\"") | Xpath 'r'
686    Xpath 's'
687    break
688endwhile
689Xpath 't'
690if !MSG('E15', "Invalid expression")
691    Xpath 'u'
692endif
693
694let g:test10_result = g:Xpath
695delfunction MSG
696
697func Test_expr_parsing()
698    call assert_equal('abcdefghilpt', g:test10_result)
699endfunc
700
701
702"-------------------------------------------------------------------------------
703" Test 11:  :if, :elseif, :while argument evaluation after abort	    {{{1
704"
705"	    When code is skipped over due to an error, the boolean argument to
706"	    an :if, :elseif, or :while must not be evaluated.
707"-------------------------------------------------------------------------------
708
709XpathINIT
710
711let calls = 0
712
713function! P(num)
714    let g:calls = g:calls + a:num   " side effect on call
715    return 0
716endfunction
717
718if 1
719    Xpath 'a'
720    asdf		" error
721    Xpath 'b'
722    if P(1)		" should not be called
723	Xpath 'c'
724    elseif !P(2)	" should not be called
725	Xpath 'd'
726    else
727	Xpath 'e'
728    endif
729    Xpath 'f'
730    while P(4)		" should not be called
731	Xpath 'g'
732    endwhile
733    Xpath 'h'
734endif
735Xpath 'x'
736
737let g:test11_calls = calls
738let g:test11_result = g:Xpath
739
740unlet calls
741delfunction P
742
743func Test_arg_abort()
744    call assert_equal(0, g:test11_calls)
745    call assert_equal('ax', g:test11_result)
746endfunc
747
748
749"-------------------------------------------------------------------------------
750" Test 12:  Expressions in braces in skipped code			    {{{1
751"
752"	    In code skipped over due to an error or inactive conditional,
753"	    an expression in braces as part of a variable or function name
754"	    should not be evaluated.
755"-------------------------------------------------------------------------------
756
757XpathINIT
758
759function! NULL()
760    Xpath 'a'
761    return 0
762endfunction
763
764function! ZERO()
765    Xpath 'b'
766    return 0
767endfunction
768
769function! F0()
770    Xpath 'c'
771endfunction
772
773function! F1(arg)
774    Xpath 'e'
775endfunction
776
777let V0 = 1
778
779Xpath 'f'
780echo 0 ? F{NULL() + V{ZERO()}}() : 1
781
782Xpath 'g'
783if 0
784    Xpath 'h'
785    call F{NULL() + V{ZERO()}}()
786endif
787
788Xpath 'i'
789if 1
790    asdf		" error
791    Xpath 'j'
792    call F1(F{NULL() + V{ZERO()}}())
793endif
794
795Xpath 'k'
796if 1
797    asdf		" error
798    Xpath 'l'
799    call F{NULL() + V{ZERO()}}()
800endif
801
802let g:test12_result = g:Xpath
803
804func Test_braces_skipped()
805    call assert_equal('fgik', g:test12_result)
806endfunc
807
808
809"-------------------------------------------------------------------------------
810" Test 13:  Failure in argument evaluation for :while			    {{{1
811"
812"	    A failure in the expression evaluation for the condition of a :while
813"	    causes the whole :while loop until the matching :endwhile being
814"	    ignored.  Continuation is at the next following line.
815"-------------------------------------------------------------------------------
816
817XpathINIT
818
819Xpath 'a'
820while asdf
821    Xpath 'b'
822    while 1
823	Xpath 'c'
824	break
825    endwhile
826    Xpath 'd'
827    break
828endwhile
829Xpath 'e'
830
831while asdf | Xpath 'f' | endwhile | Xpath 'g'
832Xpath 'h'
833let g:test13_result = g:Xpath
834
835func Test_while_fail()
836    call assert_equal('aeh', g:test13_result)
837endfunc
838
839
840"-------------------------------------------------------------------------------
841" Test 14:  Failure in argument evaluation for :if			    {{{1
842"
843"	    A failure in the expression evaluation for the condition of an :if
844"	    does not cause the corresponding :else or :endif being matched to
845"	    a previous :if/:elseif.  Neither of both branches of the failed :if
846"	    are executed.
847"-------------------------------------------------------------------------------
848
849XpathINIT
850
851function! F()
852    Xpath 'a'
853    let x = 0
854    if x		" false
855	Xpath 'b'
856    elseif !x		" always true
857	Xpath 'c'
858	let x = 1
859	if g:boolvar	" possibly undefined
860	    Xpath 'd'
861	else
862	    Xpath 'e'
863	endif
864	Xpath 'f'
865    elseif x		" never executed
866	Xpath 'g'
867    endif
868    Xpath 'h'
869endfunction
870
871let boolvar = 1
872call F()
873Xpath '-'
874
875unlet boolvar
876call F()
877let g:test14_result = g:Xpath
878
879delfunction F
880
881func Test_if_fail()
882    call assert_equal('acdfh-acfh', g:test14_result)
883endfunc
884
885
886"-------------------------------------------------------------------------------
887" Test 15:  Failure in argument evaluation for :if (bar)		    {{{1
888"
889"	    Like previous test, except that the failing :if ... | ... | :endif
890"	    is in a single line.
891"-------------------------------------------------------------------------------
892
893XpathINIT
894
895function! F()
896    Xpath 'a'
897    let x = 0
898    if x		" false
899	Xpath 'b'
900    elseif !x		" always true
901	Xpath 'c'
902	let x = 1
903	if g:boolvar | Xpath 'd' | else | Xpath 'e' | endif
904	Xpath 'f'
905    elseif x		" never executed
906	Xpath 'g'
907    endif
908    Xpath 'h'
909endfunction
910
911let boolvar = 1
912call F()
913Xpath '-'
914
915unlet boolvar
916call F()
917let g:test15_result = g:Xpath
918
919delfunction F
920
921func Test_if_bar_fail()
922    call assert_equal('acdfh-acfh', g:test15_result)
923endfunc
924
925"-------------------------------------------------------------------------------
926" Test 16:  Double :else or :elseif after :else				    {{{1
927"
928"	    Multiple :elses or an :elseif after an :else are forbidden.
929"-------------------------------------------------------------------------------
930
931func T16_F() abort
932  if 0
933    Xpath 'a'
934  else
935    Xpath 'b'
936  else		" aborts function
937    Xpath 'c'
938  endif
939  Xpath 'd'
940endfunc
941
942func T16_G() abort
943  if 0
944    Xpath 'a'
945  else
946    Xpath 'b'
947  elseif 1		" aborts function
948    Xpath 'c'
949  else
950    Xpath 'd'
951  endif
952  Xpath 'e'
953endfunc
954
955func T16_H() abort
956  if 0
957    Xpath 'a'
958  elseif 0
959    Xpath 'b'
960  else
961    Xpath 'c'
962  else		" aborts function
963    Xpath 'd'
964  endif
965  Xpath 'e'
966endfunc
967
968func T16_I() abort
969  if 0
970    Xpath 'a'
971  elseif 0
972    Xpath 'b'
973  else
974    Xpath 'c'
975  elseif 1		" aborts function
976    Xpath 'd'
977  else
978    Xpath 'e'
979  endif
980  Xpath 'f'
981endfunc
982
983func Test_Multi_Else()
984  XpathINIT
985  try
986    call T16_F()
987  catch /E583:/
988    Xpath 'e'
989  endtry
990  call assert_equal('be', g:Xpath)
991
992  XpathINIT
993  try
994    call T16_G()
995  catch /E584:/
996    Xpath 'f'
997  endtry
998  call assert_equal('bf', g:Xpath)
999
1000  XpathINIT
1001  try
1002    call T16_H()
1003  catch /E583:/
1004    Xpath 'f'
1005  endtry
1006  call assert_equal('cf', g:Xpath)
1007
1008  XpathINIT
1009  try
1010    call T16_I()
1011  catch /E584:/
1012    Xpath 'g'
1013  endtry
1014  call assert_equal('cg', g:Xpath)
1015endfunc
1016
1017"-------------------------------------------------------------------------------
1018" Test 17:  Nesting of unmatched :if or :endif inside a :while		    {{{1
1019"
1020"	    The :while/:endwhile takes precedence in nesting over an unclosed
1021"	    :if or an unopened :endif.
1022"-------------------------------------------------------------------------------
1023
1024" While loops inside a function are continued on error.
1025func T17_F()
1026  let loops = 3
1027  while loops > 0
1028    let loops -= 1
1029    Xpath 'a' . loops
1030    if (loops == 1)
1031      Xpath 'b' . loops
1032      continue
1033    elseif (loops == 0)
1034      Xpath 'c' . loops
1035      break
1036    elseif 1
1037      Xpath 'd' . loops
1038    " endif missing!
1039  endwhile	" :endwhile after :if 1
1040  Xpath 'e'
1041endfunc
1042
1043func T17_G()
1044  let loops = 2
1045  while loops > 0
1046    let loops -= 1
1047    Xpath 'a' . loops
1048    if 0
1049      Xpath 'b' . loops
1050    " endif missing
1051  endwhile	" :endwhile after :if 0
1052endfunc
1053
1054func T17_H()
1055  let loops = 2
1056  while loops > 0
1057    let loops -= 1
1058    Xpath 'a' . loops
1059    " if missing!
1060    endif	" :endif without :if in while
1061    Xpath 'b' . loops
1062  endwhile
1063endfunc
1064
1065" Error continuation outside a function is at the outermost :endwhile or :endif.
1066XpathINIT
1067let v:errmsg = ''
1068let loops = 2
1069while loops > 0
1070    let loops -= 1
1071    Xpath 'a' . loops
1072    if 0
1073	Xpath 'b' . loops
1074    " endif missing! Following :endwhile fails.
1075endwhile | Xpath 'c'
1076Xpath 'd'
1077call assert_match('E171:', v:errmsg)
1078call assert_equal('a1d', g:Xpath)
1079
1080func Test_unmatched_if_in_while()
1081  XpathINIT
1082  call assert_fails('call T17_F()', 'E171:')
1083  call assert_equal('a2d2a1b1a0c0e', g:Xpath)
1084
1085  XpathINIT
1086  call assert_fails('call T17_G()', 'E171:')
1087  call assert_equal('a1a0', g:Xpath)
1088
1089  XpathINIT
1090  call assert_fails('call T17_H()', 'E580:')
1091  call assert_equal('a1b1a0b0', g:Xpath)
1092endfunc
1093
1094"-------------------------------------------------------------------------------
1095"-------------------------------------------------------------------------------
1096"-------------------------------------------------------------------------------
1097" Test 87   using (expr) ? funcref : funcref				    {{{1
1098"
1099"	    Vim needs to correctly parse the funcref and even when it does
1100"	    not execute the funcref, it needs to consume the trailing ()
1101"-------------------------------------------------------------------------------
1102
1103func Add2(x1, x2)
1104  return a:x1 + a:x2
1105endfu
1106
1107func GetStr()
1108  return "abcdefghijklmnopqrstuvwxyp"
1109endfu
1110
1111func Test_funcref_with_condexpr()
1112  call assert_equal(5, function('Add2')(2,3))
1113
1114  call assert_equal(3, 1 ? function('Add2')(1,2) : function('Add2')(2,3))
1115  call assert_equal(5, 0 ? function('Add2')(1,2) : function('Add2')(2,3))
1116  " Make sure, GetStr() still works.
1117  call assert_equal('abcdefghijk', GetStr()[0:10])
1118endfunc
1119
1120" Test 90:  Recognizing {} in variable name.			    {{{1
1121"-------------------------------------------------------------------------------
1122
1123func Test_curlies()
1124    let s:var = 66
1125    let ns = 's'
1126    call assert_equal(66, {ns}:var)
1127
1128    let g:a = {}
1129    let g:b = 't'
1130    let g:a[g:b] = 77
1131    call assert_equal(77, g:a['t'])
1132endfunc
1133
1134"-------------------------------------------------------------------------------
1135" Test 91:  using type().					    {{{1
1136"-------------------------------------------------------------------------------
1137
1138func Test_type()
1139    call assert_equal(0, type(0))
1140    call assert_equal(1, type(""))
1141    call assert_equal(2, type(function("tr")))
1142    call assert_equal(2, type(function("tr", [8])))
1143    call assert_equal(3, type([]))
1144    call assert_equal(4, type({}))
1145    if has('float')
1146      call assert_equal(5, type(0.0))
1147    endif
1148    call assert_equal(6, type(v:false))
1149    call assert_equal(6, type(v:true))
1150    call assert_equal(7, type(v:none))
1151    call assert_equal(7, type(v:null))
1152    call assert_equal(8, v:t_job)
1153    call assert_equal(9, v:t_channel)
1154    call assert_equal(v:t_number, type(0))
1155    call assert_equal(v:t_string, type(""))
1156    call assert_equal(v:t_func, type(function("tr")))
1157    call assert_equal(v:t_func, type(function("tr", [8])))
1158    call assert_equal(v:t_list, type([]))
1159    call assert_equal(v:t_dict, type({}))
1160    if has('float')
1161      call assert_equal(v:t_float, type(0.0))
1162    endif
1163    call assert_equal(v:t_bool, type(v:false))
1164    call assert_equal(v:t_bool, type(v:true))
1165    call assert_equal(v:t_none, type(v:none))
1166    call assert_equal(v:t_none, type(v:null))
1167
1168    call assert_fails("call type(test_void())", 'E685:')
1169    call assert_fails("call type(test_unknown())", 'E685:')
1170
1171    call assert_equal(0, 0 + v:false)
1172    call assert_equal(1, 0 + v:true)
1173    call assert_equal(0, 0 + v:none)
1174    call assert_equal(0, 0 + v:null)
1175
1176    call assert_equal('v:false', '' . v:false)
1177    call assert_equal('v:true', '' . v:true)
1178    call assert_equal('v:none', '' . v:none)
1179    call assert_equal('v:null', '' . v:null)
1180
1181    call assert_true(v:false == 0)
1182    call assert_false(v:false != 0)
1183    call assert_true(v:true == 1)
1184    call assert_false(v:true != 1)
1185    call assert_false(v:true == v:false)
1186    call assert_true(v:true != v:false)
1187
1188    call assert_true(v:null == 0)
1189    call assert_false(v:null != 0)
1190    call assert_true(v:none == 0)
1191    call assert_false(v:none != 0)
1192
1193    call assert_true(v:false is v:false)
1194    call assert_true(v:true is v:true)
1195    call assert_true(v:none is v:none)
1196    call assert_true(v:null is v:null)
1197
1198    call assert_false(v:false isnot v:false)
1199    call assert_false(v:true isnot v:true)
1200    call assert_false(v:none isnot v:none)
1201    call assert_false(v:null isnot v:null)
1202
1203    call assert_false(v:false is 0)
1204    call assert_false(v:true is 1)
1205    call assert_false(v:true is v:false)
1206    call assert_false(v:none is 0)
1207    call assert_false(v:null is 0)
1208    call assert_false(v:null is v:none)
1209
1210    call assert_true(v:false isnot 0)
1211    call assert_true(v:true isnot 1)
1212    call assert_true(v:true isnot v:false)
1213    call assert_true(v:none isnot 0)
1214    call assert_true(v:null isnot 0)
1215    call assert_true(v:null isnot v:none)
1216
1217    call assert_equal(v:false, eval(string(v:false)))
1218    call assert_equal(v:true, eval(string(v:true)))
1219    call assert_equal(v:none, eval(string(v:none)))
1220    call assert_equal(v:null, eval(string(v:null)))
1221
1222    call assert_equal(v:false, copy(v:false))
1223    call assert_equal(v:true, copy(v:true))
1224    call assert_equal(v:none, copy(v:none))
1225    call assert_equal(v:null, copy(v:null))
1226
1227    call assert_equal([v:false], deepcopy([v:false]))
1228    call assert_equal([v:true], deepcopy([v:true]))
1229    call assert_equal([v:none], deepcopy([v:none]))
1230    call assert_equal([v:null], deepcopy([v:null]))
1231
1232    call assert_true(empty(v:false))
1233    call assert_false(empty(v:true))
1234    call assert_true(empty(v:null))
1235    call assert_true(empty(v:none))
1236
1237    func ChangeYourMind()
1238	try
1239	    return v:true
1240	finally
1241	    return 'something else'
1242	endtry
1243    endfunc
1244
1245    call ChangeYourMind()
1246endfunc
1247
1248"-------------------------------------------------------------------------------
1249" Test 92:  skipping code					    {{{1
1250"-------------------------------------------------------------------------------
1251
1252func Test_skip()
1253    let Fn = function('Test_type')
1254    call assert_false(0 && Fn[1])
1255    call assert_false(0 && string(Fn))
1256    call assert_false(0 && len(Fn))
1257    let l = []
1258    call assert_false(0 && l[1])
1259    call assert_false(0 && string(l))
1260    call assert_false(0 && len(l))
1261    let f = 1.0
1262    call assert_false(0 && f[1])
1263    call assert_false(0 && string(f))
1264    call assert_false(0 && len(f))
1265    let sp = v:null
1266    call assert_false(0 && sp[1])
1267    call assert_false(0 && string(sp))
1268    call assert_false(0 && len(sp))
1269
1270endfunc
1271
1272"-------------------------------------------------------------------------------
1273" Test 93:  :echo and string()					    {{{1
1274"-------------------------------------------------------------------------------
1275
1276func Test_echo_and_string()
1277    " String
1278    let a = 'foo bar'
1279    redir => result
1280    echo a
1281    echo string(a)
1282    redir END
1283    let l = split(result, "\n")
1284    call assert_equal(["foo bar",
1285		     \ "'foo bar'"], l)
1286
1287    " Float
1288    if has('float')
1289	let a = -1.2e0
1290	redir => result
1291	echo a
1292	echo string(a)
1293	redir END
1294	let l = split(result, "\n")
1295	call assert_equal(["-1.2",
1296			 \ "-1.2"], l)
1297    endif
1298
1299    " Funcref
1300    redir => result
1301    echo function('string')
1302    echo string(function('string'))
1303    redir END
1304    let l = split(result, "\n")
1305    call assert_equal(["string",
1306		     \ "function('string')"], l)
1307
1308    " Recursive dictionary
1309    let a = {}
1310    let a["a"] = a
1311    redir => result
1312    echo a
1313    echo string(a)
1314    redir END
1315    let l = split(result, "\n")
1316    call assert_equal(["{'a': {...}}",
1317		     \ "{'a': {...}}"], l)
1318
1319    " Recursive list
1320    let a = [0]
1321    let a[0] = a
1322    redir => result
1323    echo a
1324    echo string(a)
1325    redir END
1326    let l = split(result, "\n")
1327    call assert_equal(["[[...]]",
1328		     \ "[[...]]"], l)
1329
1330    " Empty dictionaries in a list
1331    let a = {}
1332    redir => result
1333    echo [a, a, a]
1334    echo string([a, a, a])
1335    redir END
1336    let l = split(result, "\n")
1337    call assert_equal(["[{}, {}, {}]",
1338		     \ "[{}, {}, {}]"], l)
1339
1340    " Empty dictionaries in a dictionary
1341    let a = {}
1342    let b = {"a": a, "b": a}
1343    redir => result
1344    echo b
1345    echo string(b)
1346    redir END
1347    let l = split(result, "\n")
1348    call assert_equal(["{'a': {}, 'b': {}}",
1349		     \ "{'a': {}, 'b': {}}"], l)
1350
1351    " Empty lists in a list
1352    let a = []
1353    redir => result
1354    echo [a, a, a]
1355    echo string([a, a, a])
1356    redir END
1357    let l = split(result, "\n")
1358    call assert_equal(["[[], [], []]",
1359		     \ "[[], [], []]"], l)
1360
1361    " Empty lists in a dictionary
1362    let a = []
1363    let b = {"a": a, "b": a}
1364    redir => result
1365    echo b
1366    echo string(b)
1367    redir END
1368    let l = split(result, "\n")
1369    call assert_equal(["{'a': [], 'b': []}",
1370		     \ "{'a': [], 'b': []}"], l)
1371
1372    " Dictionaries in a list
1373    let a = {"one": "yes", "two": "yes", "three": "yes"}
1374    redir => result
1375    echo [a, a, a]
1376    echo string([a, a, a])
1377    redir END
1378    let l = split(result, "\n")
1379    call assert_equal(["[{'one': 'yes', 'two': 'yes', 'three': 'yes'}, {...}, {...}]",
1380		     \ "[{'one': 'yes', 'two': 'yes', 'three': 'yes'}, {'one': 'yes', 'two': 'yes', 'three': 'yes'}, {'one': 'yes', 'two': 'yes', 'three': 'yes'}]"], l)
1381
1382    " Dictionaries in a dictionary
1383    let a = {"one": "yes", "two": "yes", "three": "yes"}
1384    let b = {"a": a, "b": a}
1385    redir => result
1386    echo b
1387    echo string(b)
1388    redir END
1389    let l = split(result, "\n")
1390    call assert_equal(["{'a': {'one': 'yes', 'two': 'yes', 'three': 'yes'}, 'b': {...}}",
1391		     \ "{'a': {'one': 'yes', 'two': 'yes', 'three': 'yes'}, 'b': {'one': 'yes', 'two': 'yes', 'three': 'yes'}}"], l)
1392
1393    " Lists in a list
1394    let a = [1, 2, 3]
1395    redir => result
1396    echo [a, a, a]
1397    echo string([a, a, a])
1398    redir END
1399    let l = split(result, "\n")
1400    call assert_equal(["[[1, 2, 3], [...], [...]]",
1401		     \ "[[1, 2, 3], [1, 2, 3], [1, 2, 3]]"], l)
1402
1403    " Lists in a dictionary
1404    let a = [1, 2, 3]
1405    let b = {"a": a, "b": a}
1406    redir => result
1407    echo b
1408    echo string(b)
1409    redir END
1410    let l = split(result, "\n")
1411    call assert_equal(["{'a': [1, 2, 3], 'b': [...]}",
1412		     \ "{'a': [1, 2, 3], 'b': [1, 2, 3]}"], l)
1413
1414    call assert_fails('echo &:', 'E112:')
1415    call assert_fails('echo &g:', 'E112:')
1416    call assert_fails('echo &l:', 'E112:')
1417
1418endfunc
1419
1420"-------------------------------------------------------------------------------
1421" Test 94:  64-bit Numbers					    {{{1
1422"-------------------------------------------------------------------------------
1423
1424func Test_num64()
1425    call assert_notequal( 4294967296, 0)
1426    call assert_notequal(-4294967296, 0)
1427    call assert_equal( 4294967296,  0xFFFFffff + 1)
1428    call assert_equal(-4294967296, -0xFFFFffff - 1)
1429
1430    call assert_equal( 9223372036854775807,  1 / 0)
1431    call assert_equal(-9223372036854775807, -1 / 0)
1432    call assert_equal(-9223372036854775807 - 1,  0 / 0)
1433
1434    if has('float')
1435      call assert_equal( 0x7FFFffffFFFFffff, float2nr( 1.0e150))
1436      call assert_equal(-0x7FFFffffFFFFffff, float2nr(-1.0e150))
1437    endif
1438
1439    let rng = range(0xFFFFffff, 0x100000001)
1440    call assert_equal([0xFFFFffff, 0x100000000, 0x100000001], rng)
1441    call assert_equal(0x100000001, max(rng))
1442    call assert_equal(0xFFFFffff, min(rng))
1443    call assert_equal(rng, sort(range(0x100000001, 0xFFFFffff, -1), 'N'))
1444endfunc
1445
1446"-------------------------------------------------------------------------------
1447" Test 95:  lines of :append, :change, :insert			    {{{1
1448"-------------------------------------------------------------------------------
1449
1450function! DefineFunction(name, body)
1451    let func = join(['function! ' . a:name . '()'] + a:body + ['endfunction'], "\n")
1452    exec func
1453endfunction
1454
1455func Test_script_lines()
1456    " :append
1457    try
1458	call DefineFunction('T_Append', [
1459		    \ 'append',
1460		    \ 'py <<EOS',
1461		    \ '.',
1462		    \ ])
1463    catch
1464	call assert_report("Can't define function")
1465    endtry
1466    try
1467	call DefineFunction('T_Append', [
1468		    \ 'append',
1469		    \ 'abc',
1470		    \ ])
1471	call assert_report("Shouldn't be able to define function")
1472    catch
1473	call assert_exception('Vim(function):E126: Missing :endfunction')
1474    endtry
1475
1476    " :change
1477    try
1478	call DefineFunction('T_Change', [
1479		    \ 'change',
1480		    \ 'py <<EOS',
1481		    \ '.',
1482		    \ ])
1483    catch
1484	call assert_report("Can't define function")
1485    endtry
1486    try
1487	call DefineFunction('T_Change', [
1488		    \ 'change',
1489		    \ 'abc',
1490		    \ ])
1491	call assert_report("Shouldn't be able to define function")
1492    catch
1493	call assert_exception('Vim(function):E126: Missing :endfunction')
1494    endtry
1495
1496    " :insert
1497    try
1498	call DefineFunction('T_Insert', [
1499		    \ 'insert',
1500		    \ 'py <<EOS',
1501		    \ '.',
1502		    \ ])
1503    catch
1504	call assert_report("Can't define function")
1505    endtry
1506    try
1507	call DefineFunction('T_Insert', [
1508		    \ 'insert',
1509		    \ 'abc',
1510		    \ ])
1511	call assert_report("Shouldn't be able to define function")
1512    catch
1513	call assert_exception('Vim(function):E126: Missing :endfunction')
1514    endtry
1515endfunc
1516
1517"-------------------------------------------------------------------------------
1518" Test 96:  line continuation						    {{{1
1519"
1520"	    Undefined behavior was detected by ubsan with line continuation
1521"	    after an empty line.
1522"-------------------------------------------------------------------------------
1523func Test_script_emty_line_continuation()
1524
1525    \
1526endfunc
1527
1528"-------------------------------------------------------------------------------
1529" Test 97:  bitwise functions						    {{{1
1530"-------------------------------------------------------------------------------
1531func Test_bitwise_functions()
1532    " and
1533    call assert_equal(127, and(127, 127))
1534    call assert_equal(16, and(127, 16))
1535    eval 127->and(16)->assert_equal(16)
1536    call assert_equal(0, and(127, 128))
1537    call assert_fails("call and([], 1)", 'E745:')
1538    call assert_fails("call and({}, 1)", 'E728:')
1539    if has('float')
1540      call assert_fails("call and(1.0, 1)", 'E805:')
1541      call assert_fails("call and(1, 1.0)", 'E805:')
1542    endif
1543    call assert_fails("call and(1, [])", 'E745:')
1544    call assert_fails("call and(1, {})", 'E728:')
1545    " or
1546    call assert_equal(23, or(16, 7))
1547    call assert_equal(15, or(8, 7))
1548    eval 8->or(7)->assert_equal(15)
1549    call assert_equal(123, or(0, 123))
1550    call assert_fails("call or([], 1)", 'E745:')
1551    call assert_fails("call or({}, 1)", 'E728:')
1552    if has('float')
1553      call assert_fails("call or(1.0, 1)", 'E805:')
1554      call assert_fails("call or(1, 1.0)", 'E805:')
1555    endif
1556    call assert_fails("call or(1, [])", 'E745:')
1557    call assert_fails("call or(1, {})", 'E728:')
1558    " xor
1559    call assert_equal(0, xor(127, 127))
1560    call assert_equal(111, xor(127, 16))
1561    eval 127->xor(16)->assert_equal(111)
1562    call assert_equal(255, xor(127, 128))
1563    if has('float')
1564      call assert_fails("call xor(1.0, 1)", 'E805:')
1565      call assert_fails("call xor(1, 1.0)", 'E805:')
1566    endif
1567    call assert_fails("call xor([], 1)", 'E745:')
1568    call assert_fails("call xor({}, 1)", 'E728:')
1569    call assert_fails("call xor(1, [])", 'E745:')
1570    call assert_fails("call xor(1, {})", 'E728:')
1571    " invert
1572    call assert_equal(65408, and(invert(127), 65535))
1573    eval 127->invert()->and(65535)->assert_equal(65408)
1574    call assert_equal(65519, and(invert(16), 65535))
1575    call assert_equal(65407, and(invert(128), 65535))
1576    if has('float')
1577      call assert_fails("call invert(1.0)", 'E805:')
1578    endif
1579    call assert_fails("call invert([])", 'E745:')
1580    call assert_fails("call invert({})", 'E728:')
1581endfunc
1582
1583" Test using bang after user command				    {{{1
1584func Test_user_command_with_bang()
1585    command -bang Nieuw let nieuw = 1
1586    Ni!
1587    call assert_equal(1, nieuw)
1588    unlet nieuw
1589    delcommand Nieuw
1590endfunc
1591
1592func Test_script_expand_sfile()
1593  let lines =<< trim END
1594    func s:snr()
1595      return expand('<sfile>')
1596    endfunc
1597    let g:result = s:snr()
1598  END
1599  call writefile(lines, 'Xexpand')
1600  source Xexpand
1601  call assert_match('<SNR>\d\+_snr', g:result)
1602  source Xexpand
1603  call assert_match('<SNR>\d\+_snr', g:result)
1604
1605  call delete('Xexpand')
1606  unlet g:result
1607endfunc
1608
1609func Test_compound_assignment_operators()
1610    " Test for number
1611    let x = 1
1612    let x += 10
1613    call assert_equal(11, x)
1614    let x -= 5
1615    call assert_equal(6, x)
1616    let x *= 4
1617    call assert_equal(24, x)
1618    let x /= 3
1619    call assert_equal(8, x)
1620    let x %= 3
1621    call assert_equal(2, x)
1622    let x .= 'n'
1623    call assert_equal('2n', x)
1624
1625    " Test special cases: division or modulus with 0.
1626    let x = 1
1627    let x /= 0
1628    call assert_equal(0x7FFFFFFFFFFFFFFF, x)
1629
1630    let x = -1
1631    let x /= 0
1632    call assert_equal(-0x7FFFFFFFFFFFFFFF, x)
1633
1634    let x = 0
1635    let x /= 0
1636    call assert_equal(-0x7FFFFFFFFFFFFFFF - 1, x)
1637
1638    let x = 1
1639    let x %= 0
1640    call assert_equal(0, x)
1641
1642    let x = -1
1643    let x %= 0
1644    call assert_equal(0, x)
1645
1646    let x = 0
1647    let x %= 0
1648    call assert_equal(0, x)
1649
1650    " Test for string
1651    let x = 'str'
1652    let x .= 'ing'
1653    call assert_equal('string', x)
1654    let x += 1
1655    call assert_equal(1, x)
1656
1657    if has('float')
1658      " Test for float
1659      let x -= 1.5
1660      call assert_equal(-0.5, x)
1661      let x = 0.5
1662      let x += 4.5
1663      call assert_equal(5.0, x)
1664      let x -= 1.5
1665      call assert_equal(3.5, x)
1666      let x *= 3.0
1667      call assert_equal(10.5, x)
1668      let x /= 2.5
1669      call assert_equal(4.2, x)
1670      call assert_fails('let x %= 0.5', 'E734')
1671      call assert_fails('let x .= "f"', 'E734')
1672      let x = !3.14
1673      call assert_equal(0.0, x)
1674    endif
1675
1676    " Test for environment variable
1677    let $FOO = 1
1678    call assert_fails('let $FOO += 1', 'E734')
1679    call assert_fails('let $FOO -= 1', 'E734')
1680    call assert_fails('let $FOO *= 1', 'E734')
1681    call assert_fails('let $FOO /= 1', 'E734')
1682    call assert_fails('let $FOO %= 1', 'E734')
1683    let $FOO .= 's'
1684    call assert_equal('1s', $FOO)
1685    unlet $FOO
1686
1687    " Test for option variable (type: number)
1688    let &scrolljump = 1
1689    let &scrolljump += 5
1690    call assert_equal(6, &scrolljump)
1691    let &scrolljump -= 2
1692    call assert_equal(4, &scrolljump)
1693    let &scrolljump *= 3
1694    call assert_equal(12, &scrolljump)
1695    let &scrolljump /= 2
1696    call assert_equal(6, &scrolljump)
1697    let &scrolljump %= 5
1698    call assert_equal(1, &scrolljump)
1699    call assert_fails('let &scrolljump .= "j"', 'E734')
1700    set scrolljump&vim
1701
1702    " Test for register
1703    let @/ = 1
1704    call assert_fails('let @/ += 1', 'E734')
1705    call assert_fails('let @/ -= 1', 'E734')
1706    call assert_fails('let @/ *= 1', 'E734')
1707    call assert_fails('let @/ /= 1', 'E734')
1708    call assert_fails('let @/ %= 1', 'E734')
1709    let @/ .= 's'
1710    call assert_equal('1s', @/)
1711    let @/ = ''
1712endfunc
1713
1714func Test_unlet_env()
1715  let $TESTVAR = 'yes'
1716  call assert_equal('yes', $TESTVAR)
1717  call assert_fails('lockvar $TESTVAR', 'E940')
1718  call assert_fails('unlockvar $TESTVAR', 'E940')
1719  call assert_equal('yes', $TESTVAR)
1720  if 0
1721    unlet $TESTVAR
1722  endif
1723  call assert_equal('yes', $TESTVAR)
1724  unlet $TESTVAR
1725  call assert_equal('', $TESTVAR)
1726endfunc
1727
1728func Test_refcount()
1729    " Immediate values
1730    call assert_equal(-1, test_refcount(1))
1731    call assert_equal(-1, test_refcount('s'))
1732    call assert_equal(-1, test_refcount(v:true))
1733    call assert_equal(0, test_refcount([]))
1734    call assert_equal(0, test_refcount({}))
1735    call assert_equal(0, test_refcount(0zff))
1736    call assert_equal(0, test_refcount({-> line('.')}))
1737    if has('float')
1738        call assert_equal(-1, test_refcount(0.1))
1739    endif
1740    if has('job')
1741        call assert_equal(0, test_refcount(job_start([&shell, &shellcmdflag, 'echo .'])))
1742    endif
1743
1744    " No refcount types
1745    let x = 1
1746    call assert_equal(-1, test_refcount(x))
1747    let x = 's'
1748    call assert_equal(-1, test_refcount(x))
1749    let x = v:true
1750    call assert_equal(-1, test_refcount(x))
1751    if has('float')
1752        let x = 0.1
1753        call assert_equal(-1, test_refcount(x))
1754    endif
1755
1756    " Check refcount
1757    let x = []
1758    call assert_equal(1, test_refcount(x))
1759
1760    let x = {}
1761    call assert_equal(1, x->test_refcount())
1762
1763    let x = 0zff
1764    call assert_equal(1, test_refcount(x))
1765
1766    let X = {-> line('.')}
1767    call assert_equal(1, test_refcount(X))
1768    let Y = X
1769    call assert_equal(2, test_refcount(X))
1770
1771    if has('job')
1772        let job = job_start([&shell, &shellcmdflag, 'echo .'])
1773        call assert_equal(1, test_refcount(job))
1774        call assert_equal(1, test_refcount(job_getchannel(job)))
1775        call assert_equal(1, test_refcount(job))
1776    endif
1777
1778    " Function arguments, copying and unassigning
1779    func ExprCheck(x, i)
1780        let i = a:i + 1
1781        call assert_equal(i, test_refcount(a:x))
1782        let Y = a:x
1783        call assert_equal(i + 1, test_refcount(a:x))
1784        call assert_equal(test_refcount(a:x), test_refcount(Y))
1785        let Y = 0
1786        call assert_equal(i, test_refcount(a:x))
1787    endfunc
1788    call ExprCheck([], 0)
1789    call ExprCheck({}, 0)
1790    call ExprCheck(0zff, 0)
1791    call ExprCheck({-> line('.')}, 0)
1792    if has('job')
1793	call ExprCheck(job, 1)
1794	call ExprCheck(job_getchannel(job), 1)
1795	call job_stop(job)
1796    endif
1797    delfunc ExprCheck
1798
1799    " Regarding function
1800    func Func(x) abort
1801        call assert_equal(2, test_refcount(function('Func')))
1802        call assert_equal(0, test_refcount(funcref('Func')))
1803    endfunc
1804    call assert_equal(1, test_refcount(function('Func')))
1805    call assert_equal(0, test_refcount(function('Func', [1])))
1806    call assert_equal(0, test_refcount(funcref('Func')))
1807    call assert_equal(0, test_refcount(funcref('Func', [1])))
1808    let X = function('Func')
1809    let Y = X
1810    call assert_equal(1, test_refcount(X))
1811    let X = function('Func', [1])
1812    let Y = X
1813    call assert_equal(2, test_refcount(X))
1814    let X = funcref('Func')
1815    let Y = X
1816    call assert_equal(2, test_refcount(X))
1817    let X = funcref('Func', [1])
1818    let Y = X
1819    call assert_equal(2, test_refcount(X))
1820    unlet X
1821    unlet Y
1822    call Func(1)
1823    delfunc Func
1824
1825    " Function with dict
1826    func DictFunc() dict
1827        call assert_equal(3, test_refcount(self))
1828    endfunc
1829    let d = {'Func': function('DictFunc')}
1830    call assert_equal(1, test_refcount(d))
1831    call assert_equal(0, test_refcount(d.Func))
1832    call d.Func()
1833    unlet d
1834    delfunc DictFunc
1835endfunc
1836
1837" Test for missing :endif, :endfor, :endwhile and :endtry           {{{1
1838func Test_missing_end()
1839  call writefile(['if 2 > 1', 'echo ">"'], 'Xscript')
1840  call assert_fails('source Xscript', 'E171:')
1841  call writefile(['for i in range(5)', 'echo i'], 'Xscript')
1842  call assert_fails('source Xscript', 'E170:')
1843  call writefile(['while v:true', 'echo "."'], 'Xscript')
1844  call assert_fails('source Xscript', 'E170:')
1845  call writefile(['try', 'echo "."'], 'Xscript')
1846  call assert_fails('source Xscript', 'E600:')
1847  call delete('Xscript')
1848
1849  " Using endfor with :while
1850  let caught_e732 = 0
1851  try
1852    while v:true
1853    endfor
1854  catch /E732:/
1855    let caught_e732 = 1
1856  endtry
1857  call assert_equal(1, caught_e732)
1858
1859  " Using endwhile with :for
1860  let caught_e733 = 0
1861  try
1862    for i in range(1)
1863    endwhile
1864  catch /E733:/
1865    let caught_e733 = 1
1866  endtry
1867  call assert_equal(1, caught_e733)
1868
1869  " Using endfunc with :if
1870  call assert_fails('exe "if 1 | endfunc | endif"', 'E193:')
1871
1872  " Missing 'in' in a :for statement
1873  call assert_fails('for i range(1) | endfor', 'E690:')
1874endfunc
1875
1876" Test for deep nesting of if/for/while/try statements              {{{1
1877func Test_deep_nest()
1878  if !CanRunVimInTerminal()
1879    throw 'Skipped: cannot run vim in terminal'
1880  endif
1881
1882  let lines =<< trim [SCRIPT]
1883    " Deep nesting of if ... endif
1884    func Test1()
1885      let @a = join(repeat(['if v:true'], 51), "\n")
1886      let @a ..= "\n"
1887      let @a ..= join(repeat(['endif'], 51), "\n")
1888      @a
1889      let @a = ''
1890    endfunc
1891
1892    " Deep nesting of for ... endfor
1893    func Test2()
1894      let @a = join(repeat(['for i in [1]'], 51), "\n")
1895      let @a ..= "\n"
1896      let @a ..= join(repeat(['endfor'], 51), "\n")
1897      @a
1898      let @a = ''
1899    endfunc
1900
1901    " Deep nesting of while ... endwhile
1902    func Test3()
1903      let @a = join(repeat(['while v:true'], 51), "\n")
1904      let @a ..= "\n"
1905      let @a ..= join(repeat(['endwhile'], 51), "\n")
1906      @a
1907      let @a = ''
1908    endfunc
1909
1910    " Deep nesting of try ... endtry
1911    func Test4()
1912      let @a = join(repeat(['try'], 51), "\n")
1913      let @a ..= "\necho v:true\n"
1914      let @a ..= join(repeat(['endtry'], 51), "\n")
1915      @a
1916      let @a = ''
1917    endfunc
1918
1919    " Deep nesting of function ... endfunction
1920    func Test5()
1921      let @a = join(repeat(['function X()'], 51), "\n")
1922      let @a ..= "\necho v:true\n"
1923      let @a ..= join(repeat(['endfunction'], 51), "\n")
1924      @a
1925      let @a = ''
1926    endfunc
1927  [SCRIPT]
1928  call writefile(lines, 'Xscript')
1929
1930  let buf = RunVimInTerminal('-S Xscript', {'rows': 6})
1931
1932  " Deep nesting of if ... endif
1933  call term_sendkeys(buf, ":call Test1()\n")
1934  call TermWait(buf)
1935  call WaitForAssert({-> assert_match('^E579:', term_getline(buf, 5))})
1936
1937  " Deep nesting of for ... endfor
1938  call term_sendkeys(buf, ":call Test2()\n")
1939  call TermWait(buf)
1940  call WaitForAssert({-> assert_match('^E585:', term_getline(buf, 5))})
1941
1942  " Deep nesting of while ... endwhile
1943  call term_sendkeys(buf, ":call Test3()\n")
1944  call TermWait(buf)
1945  call WaitForAssert({-> assert_match('^E585:', term_getline(buf, 5))})
1946
1947  " Deep nesting of try ... endtry
1948  call term_sendkeys(buf, ":call Test4()\n")
1949  call TermWait(buf)
1950  call WaitForAssert({-> assert_match('^E601:', term_getline(buf, 5))})
1951
1952  " Deep nesting of function ... endfunction
1953  call term_sendkeys(buf, ":call Test5()\n")
1954  call TermWait(buf)
1955  call WaitForAssert({-> assert_match('^E1058:', term_getline(buf, 4))})
1956  call term_sendkeys(buf, "\<C-C>\n")
1957  call TermWait(buf)
1958
1959  "let l = ''
1960  "for i in range(1, 6)
1961  "  let l ..= term_getline(buf, i) . "\n"
1962  "endfor
1963  "call assert_report(l)
1964
1965  call StopVimInTerminal(buf)
1966  call delete('Xscript')
1967endfunc
1968
1969" Test for errors in converting to float from various types         {{{1
1970func Test_float_conversion_errors()
1971  if has('float')
1972    call assert_fails('let x = 4.0 % 2.0', 'E804')
1973    call assert_fails('echo 1.1[0]', 'E806')
1974    call assert_fails('echo sort([function("min"), 1], "f")', 'E891:')
1975    call assert_fails('echo 3.2 == "vim"', 'E892:')
1976    call assert_fails('echo sort([[], 1], "f")', 'E893:')
1977    call assert_fails('echo sort([{}, 1], "f")', 'E894:')
1978    call assert_fails('echo 3.2 == v:true', 'E362:')
1979    call assert_fails('echo 3.2 == v:none', 'E907:')
1980  endif
1981endfunc
1982
1983"-------------------------------------------------------------------------------
1984" Modelines								    {{{1
1985" vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker
1986"-------------------------------------------------------------------------------
1987