Macro bdd 

bdd!() { /* proc-macro */ }

BDD test runner macro — generates a main() function with colored tree output.

Use this instead of suite! when your test target has harness = false.

Setup

In Cargo.toml:

[[test]]
name = "my_bdd_tests"
harness = false

In your test file:

rsspec::bdd! {
    describe "Calculator" {
        it "adds" { assert_eq!(2 + 3, 5); }
    }
}

Run with:

cargo test --test my_bdd_tests