#[macro_export]
macro_rules! assert_ready_err {
($cond:expr $(,)?) => {
match $cond {
core::task::Poll::Ready(Err(err)) => err,
poll => $crate::assert_failed!(
$crate::panicking::Msg("`Ready(Err(..))`"),
$crate::panicking::Ref(&poll),
),
}
};
($cond:expr, $($arg:tt)+) => {
match $cond {
core::task::Poll::Ready(Err(err)) => err,
poll => $crate::assert_failed!(
$crate::panicking::Msg("`Ready(Err(..))`"),
$crate::panicking::Ref(&poll),
$($arg)+
),
}
};
}
#[macro_export]
macro_rules! debug_assert_ready_err {
($($arg:tt)*) => {
if cfg!(debug_assertions) {
$crate::assert_ready_err!($($arg)*);
}
}
}
#[cfg(test)]
mod tests {
use core::task::Poll;
#[test]
#[should_panic(expected = "assertion failed: expected `Ready(Err(..))`, got `Ready(Ok(true))`")]
fn check_assert_ready_err_panic() {
assert_ready_err!(Poll::Ready(Ok(true)));
}
#[test]
#[should_panic(
expected = "assertion failed: expected `Ready(Err(..))`, got `Ready(Ok(true))`\ni'm confused"
)]
fn check_assert_ready_panic_with_message() {
assert_ready_err!(Poll::Ready(Ok(true)), "i'm confused");
}
#[test]
fn check_assert_ready_err_pass() {
assert_ready_err!(Poll::Ready(Result::<bool, _>::Err(())));
}
}