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use darling::FromMeta;
use proc_macro2::TokenStream;
use quote::{ToTokens, quote};
use crate::utils::quote_option;
#[derive(Debug, FromMeta, PartialEq)]
pub(super) struct ExternalDocs {
url: String,
#[darling(default)]
description: Option<String>,
}
impl ToTokens for ExternalDocs {
fn to_tokens(&self, tokens: &mut TokenStream) {
let url = &self.url;
let description = quote_option(&self.description);
tokens.extend(quote! {
okapi::openapi3::ExternalDocs {
url: #url.into(),
description: #description,
..Default::default()
}
})
}
}
#[cfg(test)]
mod tests {
use syn::{Meta, parse_quote};
use super::*;
#[test]
fn parse() {
let url = "test_url".to_string();
let description = "test_description".to_string();
let input: Meta = parse_quote! { external_docs(url = #url, description = #description) };
assert_eq!(
ExternalDocs::from_meta(&input).expect("Successfullt parsed"),
ExternalDocs {
url,
description: Some(description)
}
);
}
// NOTE: codegen test is kinda useless by itself, better to test expectations
// in some kind of integration tests. But I will leave it here as reference in case
// they needed.
// #[test]
// fn codegen() {
// let url = "test_url".to_string();
// let description = "test_description".to_string();
// let test_value = ExternalDocs {
// url: url.clone(),
// description: Some(description.clone()),
// };
// let expected_output = quote! {
// okapi::openapi3::ExternalDocs {
// url: #url.into(),
// description: Some(#description.into()),
// ..Default::default()
// }
// };
// assert_eq_tokens::<ExprStruct>(&test_value, &expected_output);
// }
// pub fn assert_eq_tokens<T>(actual: &impl ToTokens, expected: &TokenStream)
// where
// T: Parse + Debug + PartialEq,
// {
// let actual: T =
// syn::parse2(actual.to_token_stream()).expect("Failed to parse actual value");
// let expected: T = syn::parse2(expected.clone()).expect("Failed to parse expected value");
// assert_eq!(actual, expected);
// }
}