Replace match/panic!() boilerplate in codec.rs unit tests with assert_err!() macro.
For context, both of these approaches are superior to using assert!(matches!(_, _)) because it prints the actual value in the cargo test error message if the assertion fails. This new macro simply hides the boilerplate away.
Changed
match/panic!()boilerplate incodec.rsunit tests withassert_err!()macro.For context, both of these approaches are superior to using
assert!(matches!(_, _))because it prints the actual value in thecargo testerror message if the assertion fails. This new macro simply hides the boilerplate away.