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// This file is part of ICU4X. For terms of use, please see the file
// called LICENSE at the top level of the ICU4X source tree
// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
use std::fmt;
use writeable::assert_writeable_eq;
use writeable::LengthHint;
use writeable::Writeable;
/// A sample type implementing Writeable
struct WriteableMessage<'s> {
message: &'s str,
}
impl Writeable for WriteableMessage<'_> {
fn write_to<W: fmt::Write + ?Sized>(&self, sink: &mut W) -> fmt::Result {
sink.write_str(self.message)
}
fn writeable_length_hint(&self) -> LengthHint {
LengthHint::exact(self.message.len())
}
}
writeable::impl_display_with_writeable!(WriteableMessage<'_>);
#[test]
fn test_basic() {
let input_string = "hello world";
let message = WriteableMessage {
message: input_string,
};
assert_writeable_eq!(&message, input_string);
}
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