Macro conformance_tests 

macro_rules! conformance_tests {
    (@emit [$($counter:tt)*] $type:ty, $n_cases:expr) => { ... };
    (@internal [$($counter:tt)*]) => { ... };
    (@internal [$($counter:tt)*] $type:ty => $n_cases:expr, $($rest:tt)*) => { ... };
    (@internal [$($counter:tt)*] $type:ty => $n_cases:expr) => { ... };
    (@internal [$($counter:tt)*] $type:ty, $($rest:tt)*) => { ... };
    (@internal [$($counter:tt)*] $type:ty) => { ... };
    ($($input:tt)*) => { ... };
}

Define conformance tests for Conformance types.

This macro generates test functions that verify encodings match expected hash values stored in conformance.toml.

Usage

conformance_tests! {
    Vec<u8>,                       // Uses default (65536 cases)
    Vec<u16> => 100,               // Explicit case count
    BTreeMap<u32, String> => 100,
}

Test names are auto-generated. The type name is used as the key in the TOML file.

Regeneration Mode

When cfg(generate_conformance_tests) is set, tests regenerate their expected values in the TOML file (useful for intentional format changes):

RUSTFLAGS="--cfg generate_conformance_tests" cargo test -p my_crate conformance