Checkout calculates totals (Rust)

Generated output

### ✅ Checkout calculates totals

- **Given** the cart has 2 items
- **When** the user proceeds to checkout
- **Then** the subtotal should be $40.00
- **And** the tax should be $4.00
- **And** the total should be $44.00

Rust code

use executable_stories::Story;

#[test]
fn test_checkout_calculates_totals() {
    let mut s = Story::new("Checkout calculates totals");
    s.given("the cart has 2 items");
    s.when("the user proceeds to checkout");
    s.then("the subtotal should be $40.00");
    s.then("the tax should be $4.00");
    s.then("the total should be $44.00");
    s.pass();
}