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Add test for function strwidth() #2931

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Add test for function strwidth() #2931

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24 changes: 24 additions & 0 deletions src/testdir/test_functions.vim
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Expand Up @@ -96,6 +96,30 @@ func Test_min()
call assert_fails('call min(v:none)', 'E712:')
endfunc

func Test_strwidth()
for aw in ['single', 'double']
exe 'set ambiwidth=' . aw
call assert_equal(0, strwidth(''))
call assert_equal(1, strwidth("\t"))
call assert_equal(3, strwidth('Vim'))
call assert_equal(4, strwidth(1234))
call assert_equal(5, strwidth(-1234))

if has('multi_byte')
call assert_equal(2, strwidth('😉'))
call assert_equal(17, strwidth('Eĥoŝanĝo ĉiuĵaŭde'))
call assert_equal((aw == 'single') ? 6 : 7, strwidth('Straße'))
endif

call assert_fails('call strwidth({->0})', 'E729:')
call assert_fails('call strwidth([])', 'E730:')
call assert_fails('call strwidth({})', 'E731:')
call assert_fails('call strwidth(1.2)', 'E806:')
endfor

set ambiwidth&
endfunc

func Test_str2nr()
call assert_equal(0, str2nr(''))
call assert_equal(1, str2nr('1'))
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