cynic-codegen 3.13.2

Procedural macro code generation for cynic - a code first GraphQL client for Rust
Documentation 
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use std::{io::Write, process::Stdio};

use insta::assert_snapshot;
use rstest::rstest;
use syn::parse_quote;

use super::scalar_derive;

#[rstest(input => [
    parse_quote!(
        #[derive(Scalar)]
        struct DateTime(String);
    ),
])]
fn snapshot_scalar_derive(input: syn::DeriveInput) {
    let tokens = scalar_derive(&input).unwrap();

    assert_snapshot!(format_code(format!("{}", tokens)));
}

fn format_code(input: String) -> String {
    let mut cmd = std::process::Command::new("rustfmt")
        .stdin(Stdio::piped())
        .stdout(Stdio::piped())
        .stderr(Stdio::inherit())
        .spawn()
        .expect("failed to execute rustfmt");

    write!(cmd.stdin.as_mut().unwrap(), "{}", input).unwrap();

    std::str::from_utf8(&cmd.wait_with_output().unwrap().stdout)
        .unwrap()
        .to_owned()
}