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" Tests for :unlet
func Test_read_only()
" these caused a crash
call assert_fails('unlet count', 'E795:')
call assert_fails('unlet errmsg', 'E795:')
endfunc
func Test_existing()
let does_exist = 1
call assert_true(exists('does_exist'))
unlet does_exist
call assert_false(exists('does_exist'))
endfunc
func Test_not_existing()
unlet! does_not_exist
call assert_fails('unlet does_not_exist', 'E108:')
endfunc
func Test_unlet_fails()
call assert_fails('unlet v:["count"]', 'E46:')
endfunc
func Test_unlet_env()
let envcmd = has('win32') ? 'set' : 'env'
let $FOOBAR = 'test'
let found = 0
for kv in split(system(envcmd), "\r*\n")
if kv == 'FOOBAR=test'
let found = 1
endif
endfor
call assert_equal(1, found)
unlet $FOOBAR
let found = 0
for kv in split(system(envcmd), "\r*\n")
if kv == 'FOOBAR=test'
let found = 1
endif
endfor
call assert_equal(0, found)
unlet $MUST_NOT_BE_AN_ERROR
endfunc
func Test_unlet_complete()
let g:FOOBAR = 1
call feedkeys(":unlet g:FOO\t\n", 'tx')
call assert_true(!exists('g:FOOBAR'))
let $FOOBAR = 1
call feedkeys(":unlet $FOO\t\n", 'tx')
call assert_true(!exists('$FOOBAR') || empty($FOOBAR))
endfunc
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