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" Tests for expressions.
func Test_strgetchar()
call assert_equal(char2nr('a'), strgetchar('axb', 0))
call assert_equal(char2nr('x'), strgetchar('axb', 1))
call assert_equal(char2nr('b'), strgetchar('axb', 2))
call assert_equal(-1, strgetchar('axb', -1))
call assert_equal(-1, strgetchar('axb', 3))
call assert_equal(-1, strgetchar('', 0))
if !has('multi_byte')
return
endif
call assert_equal(char2nr('á'), strgetchar('áxb', 0))
call assert_equal(char2nr('x'), strgetchar('áxb', 1))
call assert_equal(char2nr('a'), strgetchar('àxb', 0))
call assert_equal(char2nr(''), strgetchar('àxb', 1))
call assert_equal(char2nr('x'), strgetchar('àxb', 2))
endfunc
func Test_strcharpart()
call assert_equal('a', strcharpart('axb', 0, 1))
call assert_equal('x', strcharpart('axb', 1, 1))
call assert_equal('b', strcharpart('axb', 2, 1))
call assert_equal('xb', strcharpart('axb', 1))
call assert_equal('', strcharpart('axb', 1, 0))
call assert_equal('', strcharpart('axb', 1, -1))
call assert_equal('', strcharpart('axb', -1, 1))
call assert_equal('', strcharpart('axb', -2, 2))
call assert_equal('a', strcharpart('axb', -1, 2))
if !has('multi_byte')
return
endif
call assert_equal('áxb', strcharpart('áxb', 0))
call assert_equal('á', strcharpart('áxb', 0, 1))
call assert_equal('x', strcharpart('áxb', 1, 1))
call assert_equal('a', strcharpart('àxb', 0, 1))
call assert_equal('', strcharpart('àxb', 1, 1))
call assert_equal('x', strcharpart('àxb', 2, 1))
endfunc
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