macrotest

Similar to trybuild, but allows you to write tests on how macros are expanded.

Documentation

Please refer to the documentation.

Example

Install nightly rust, cargo expand and rustfmt.

A minimal macrotest setup looks like this:

In project's Cargo.toml:

[dev-dependencies]
macrotest = "0.1"

Under project's tests/ directory create tests.rs:

#[test]
pub fn pass() {
    macrotest::expand("tests/expand/*.rs");
}

Populate the /tests/expand directory with rust source files. Each file is a macro expansion test case.