laarmen / macrotest

Test harness for declarative and procedural macros expansion via `cargo-expand`

macrotest

Similar to trybuild, but allows you to test how declarative or procedural macros are expanded.

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Documentation

Please refer to the documentation.

Example

Install nightly rust, cargo expand and rustfmt.

Add to your crate's Cargo.toml:

[dev-dependencies]
macrotest = "0.1"

Under your crate's tests/ directory, create tests.rs file containing the following code:

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

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

See test-project and test-procmacro-project for the reference.