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" 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('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_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:')
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_1()
const l = [1, 2, 3]
const d = {'foo': 10}
" Modify list
call add(l, 4)
let l[0] = 42
" Modify dict
let d['bar'] = 'hello'
let d.foo = 44
endfunc
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