macro_rules! expect_variant { ($var:expr => $variant:path, $error_msg:expr) => { ... }; ($var:expr => $variant:path) => { ... }; }
Expand description
Expect that an enum matches a variant and panic if it doesn’t.
macro_rules! expect_variant { ($var:expr => $variant:path, $error_msg:expr) => { ... }; ($var:expr => $variant:path) => { ... }; }
Expect that an enum matches a variant and panic if it doesn’t.