1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
|
" Test for :const
func s:noop()
endfunc
func Test_define_var_with_lock()
const i = 1
const f = 1.1
const s = 'vim'
const F = funcref('s:noop')
const l = [1, 2, 3]
const d = {'foo': 10}
if has('channel')
const j = test_null_job()
const c = test_null_channel()
endif
const b = v:true
const n = v:null
const bl = 0zC0FFEE
const here =<< trim EOS
hello
EOS
call assert_true(exists('i'))
call assert_true(exists('f'))
call assert_true(exists('s'))
call assert_true(exists('F'))
call assert_true(exists('l'))
call assert_true(exists('d'))
if has('channel')
call assert_true(exists('j'))
call assert_true(exists('c'))
endif
call assert_true(exists('b'))
call assert_true(exists('n'))
call assert_true(exists('bl'))
call assert_true(exists('here'))
call assert_fails('let i = 1', 'E741:')
call assert_fails('let f = 1.1', 'E741:')
call assert_fails('let s = "vim"', 'E741:')
call assert_fails('let F = funcref("s:noop")', 'E741:')
call assert_fails('let l = [1, 2, 3]', 'E741:')
call assert_fails('call filter(l, "v:val % 2 == 0")', 'E741:')
call assert_fails('let d = {"foo": 10}', 'E741:')
if has('channel')
call assert_fails('let j = test_null_job()', 'E741:')
call assert_fails('let c = test_null_channel()', 'E741:')
endif
call assert_fails('let b = v:true', 'E741:')
call assert_fails('let n = v:null', 'E741:')
call assert_fails('let bl = 0zC0FFEE', 'E741:')
call assert_fails('let here = "xxx"', 'E741:')
" Unlet
unlet i
unlet f
unlet s
unlet F
unlet l
unlet d
if has('channel')
unlet j
unlet c
endif
unlet b
unlet n
unlet bl
unlet here
endfunc
func Test_define_l_var_with_lock()
" With l: prefix
const l:i = 1
const l:f = 1.1
const l:s = 'vim'
const l:F = funcref('s:noop')
const l:l = [1, 2, 3]
const l:d = {'foo': 10}
if has('channel')
const l:j = test_null_job()
const l:c = test_null_channel()
endif
const l:b = v:true
const l:n = v:null
const l:bl = 0zC0FFEE
const l:here =<< trim EOS
hello
EOS
call assert_fails('let l:i = 1', 'E741:')
call assert_fails('let l:f = 1.1', 'E741:')
call assert_fails('let l:s = "vim"', 'E741:')
call assert_fails('let l:F = funcref("s:noop")', 'E741:')
call assert_fails('let l:l = [1, 2, 3]', 'E741:')
call assert_fails('let l:d = {"foo": 10}', 'E741:')
if has('channel')
call assert_fails('let l:j = test_null_job()', 'E741:')
call assert_fails('let l:c = test_null_channel()', 'E741:')
endif
call assert_fails('let l:b = v:true', 'E741:')
call assert_fails('let l:n = v:null', 'E741:')
call assert_fails('let l:bl = 0zC0FFEE', 'E741:')
call assert_fails('let l:here = "xxx"', 'E741:')
" Unlet
unlet l:i
unlet l:f
unlet l:s
unlet l:F
unlet l:l
unlet l:d
if has('channel')
unlet l:j
unlet l:c
endif
unlet l:b
unlet l:n
unlet l:bl
unlet l:here
endfunc
func Test_define_script_var_with_lock()
const s:x = 0
call assert_fails('let s:x = 1', 'E741:')
unlet s:x
endfunc
func Test_destructuring_with_lock()
const [a, b, c] = [1, 1.1, 'vim']
call assert_fails('let a = 1', 'E741:')
call assert_fails('let b = 1.1', 'E741:')
call assert_fails('let c = "vim"', 'E741:')
const [d; e] = [1, 1.1, 'vim']
call assert_fails('let d = 1', 'E741:')
call assert_fails('let e = [2.2, "a"]', 'E741:')
endfunc
func Test_cannot_modify_existing_variable()
let i = 1
let f = 1.1
let s = 'vim'
let F = funcref('s:noop')
let l = [1, 2, 3]
let d = {'foo': 10}
if has('channel')
let j = test_null_job()
let c = test_null_channel()
endif
let b = v:true
let n = v:null
let bl = 0zC0FFEE
call assert_fails('const i = 1', 'E995:')
call assert_fails('const f = 1.1', 'E995:')
call assert_fails('const s = "vim"', 'E995:')
call assert_fails('const F = funcref("s:noop")', 'E995:')
call assert_fails('const l = [1, 2, 3]', 'E995:')
call assert_fails('const d = {"foo": 10}', 'E995:')
if has('channel')
call assert_fails('const j = test_null_job()', 'E995:')
call assert_fails('const c = test_null_channel()', 'E995:')
endif
call assert_fails('const b = v:true', 'E995:')
call assert_fails('const n = v:null', 'E995:')
call assert_fails('const bl = 0zC0FFEE', 'E995:')
call assert_fails('const [i, f, s] = [1, 1.1, "vim"]', 'E995:')
const i2 = 1
const f2 = 1.1
const s2 = 'vim'
const F2 = funcref('s:noop')
const l2 = [1, 2, 3]
const d2 = {'foo': 10}
if has('channel')
const j2 = test_null_job()
const c2 = test_null_channel()
endif
const b2 = v:true
const n2 = v:null
const bl2 = 0zC0FFEE
call assert_fails('const i2 = 1', 'E995:')
call assert_fails('const f2 = 1.1', 'E995:')
call assert_fails('const s2 = "vim"', 'E995:')
call assert_fails('const F2 = funcref("s:noop")', 'E995:')
call assert_fails('const l2 = [1, 2, 3]', 'E995:')
call assert_fails('const d2 = {"foo": 10}', 'E995:')
if has('channel')
call assert_fails('const j2 = test_null_job()', 'E995:')
call assert_fails('const c2 = test_null_channel()', 'E995:')
endif
call assert_fails('const b2 = v:true', 'E995:')
call assert_fails('const n2 = v:null', 'E995:')
call assert_fails('const bl2 = 0zC0FFEE', 'E995:')
call assert_fails('const [i2, f2, s2] = [1, 1.1, "vim"]', 'E995:')
endfunc
func Test_const_with_condition()
const x = 0
if 0 | const x = 1 | endif
call assert_equal(0, x)
endfunc
func Test_lockvar()
let x = 'hello'
lockvar x
call assert_fails('let x = "there"', 'E741:')
if 0 | unlockvar x | endif
call assert_fails('let x = "there"', 'E741:')
unlockvar x
let x = 'there'
if 0 | lockvar x | endif
let x = 'again'
endfunc
func Test_const_with_index_access()
let l = [1, 2, 3]
call assert_fails('const l[0] = 4', 'E996:')
call assert_fails('const l[0:1] = [1, 2]', 'E996:')
let d = {'aaa': 0}
call assert_fails("const d['aaa'] = 4", 'E996:')
call assert_fails("const d.aaa = 4", 'E996:')
endfunc
func Test_const_with_compound_assign()
let i = 0
call assert_fails('const i += 4', 'E995:')
call assert_fails('const i -= 4', 'E995:')
call assert_fails('const i *= 4', 'E995:')
call assert_fails('const i /= 4', 'E995:')
call assert_fails('const i %= 4', 'E995:')
let s = 'a'
call assert_fails('const s .= "b"', 'E995:')
let [a, b, c] = [1, 2, 3]
call assert_fails('const [a, b, c] += [4, 5, 6]', 'E995:')
let [d; e] = [1, 2, 3]
call assert_fails('const [d; e] += [4, 5, 6]', 'E995:')
endfunc
func Test_const_with_special_variables()
call assert_fails('const $FOO = "hello"', 'E996:')
call assert_fails('const @a = "hello"', 'E996:')
call assert_fails('const &filetype = "vim"', 'E996:')
call assert_fails('const &l:filetype = "vim"', 'E996:')
call assert_fails('const &g:encoding = "utf-8"', 'E996:')
call assert_fails('const [a, $CONST_FOO] = [369, "abc"]', 'E996:')
call assert_equal(369, a)
call assert_equal(v:null, getenv("CONST_FOO"))
call assert_fails('const [b; $CONST_FOO] = [246, 2, "abc"]', 'E996:')
call assert_equal(246, b)
call assert_equal(v:null, getenv("CONST_FOO"))
endfunc
func Test_const_with_eval_name()
let s = 'foo'
" eval name with :const should work
const abc_{s} = 1
const {s}{s} = 1
let s2 = 'abc_foo'
call assert_fails('const {s2} = "bar"', 'E995:')
endfunc
func Test_lock_depth_is_2()
" Modify list - error when changing item or adding/removing items
const l = [1, 2, [3, 4]]
call assert_fails('let l[0] = 42', 'E741:')
call assert_fails('let l[2][0] = 42', 'E741:')
call assert_fails('call add(l, 4)', 'E741:')
call assert_fails('unlet l[1]', 'E741:')
" Modify blob - error when changing
const b = 0z001122
call assert_fails('let b[0] = 42', 'E741:')
" Modify dict - error when changing item or adding/removing items
const d = {'foo': 10}
call assert_fails("let d['foo'] = 'hello'", 'E741:')
call assert_fails("let d.foo = 'hello'", 'E741:')
call assert_fails("let d['bar'] = 'hello'", 'E741:')
call assert_fails("unlet d['foo']", 'E741:')
" Modifying list or dict item contents is OK.
let lvar = ['a', 'b']
let bvar = 0z1122
const l2 = [0, lvar, bvar]
let l2[1][0] = 'c'
let l2[2][1] = 0x33
call assert_equal([0, ['c', 'b'], 0z1133], l2)
const d2 = #{a: 0, b: lvar, c: 4}
let d2.b[1] = 'd'
endfunc
" vim: shiftwidth=2 sts=2 expandtab
|
