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" Tests for :unlet
func Test_read_only()
try
" this caused a crash
unlet v:count
catch
call assert_true(v:exception =~ ':E795:')
endtry
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
try
unlet does_not_exist
catch
call assert_true(v:exception =~ ':E108:')
endtry
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
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