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v/vlib/builtin/utf8_test.v

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fn test_utf8_char_len() {
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assert utf8_char_len(`a`) == 1
println(utf8_char_len(`a`))
s := 'п'
assert utf8_char_len(s[0]) == 2
}
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fn test_utf8_wide_char() {
$if msvc {
// TODO: make this test pass msvc too
return
}
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r := ``
s := ''
println('r: $r')
println('s: $s')
rstr := r.str()
println('rstr: $rstr')
assert utf8_char_len(r) == 1
assert utf8_char_len(s[0]) == 3
assert s == rstr
val := rstr.str
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unsafe {
assert val[0].hex() == 'e2'
assert val[1].hex() == '9c'
assert val[2].hex() == '94'
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}
}
fn test_to_wide_latin() {
s := 'abc 123'
w := s.to_wide()
unsafe {
assert w[0] == 97
assert w[1] == 98
assert w[2] == 99
assert w[3] == 32
assert w[4] == 49
assert w[5] == 50
assert w[6] == 51
assert w[7] == 0
}
}
fn test_to_wide_cyrillic() {
s := 'Проба'
w := s.to_wide()
unsafe {
assert w[0] == 1055
assert w[1] == 1088
assert w[2] == 1086
assert w[3] == 1073
assert w[4] == 1072
assert w[5] == 0
}
}