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34 lines
883 B
Rust
34 lines
883 B
Rust
// run-pass
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use std::mem::size_of;
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#[derive(PartialEq, Debug)]
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enum Either<T, U> { Left(T), Right(U) }
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macro_rules! check {
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($t:ty, $sz:expr, $($e:expr, $s:expr),*) => {{
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assert_eq!(size_of::<$t>(), $sz);
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$({
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static S: $t = $e;
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let v: $t = $e;
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assert_eq!(S, v);
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assert_eq!(format!("{:?}", v), $s);
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assert_eq!(format!("{:?}", S), $s);
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});*
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}}
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}
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pub fn main() {
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check!(Option<u8>, 2,
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None, "None",
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Some(129), "Some(129)");
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check!(Option<i16>, 4,
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None, "None",
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Some(-20000), "Some(-20000)");
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check!(Either<u8, i8>, 2,
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Either::Left(132), "Left(132)",
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Either::Right(-32), "Right(-32)");
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check!(Either<u8, i16>, 4,
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Either::Left(132), "Left(132)",
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Either::Right(-20000), "Right(-20000)");
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}
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