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use darling::{Error, FromMeta};
use syn::parse_quote;
#[derive(Debug, FromMeta)]
struct Meta {
#[darling(default)]
meta1: Option<String>,
#[darling(default)]
meta2: bool,
}
#[test]
fn nested_meta_meta_value() {
let meta = Meta::from_list(&[parse_quote! {
meta1 = "thefeature"
}])
.unwrap();
assert_eq!(meta.meta1, Some("thefeature".to_string()));
assert!(!meta.meta2);
}
#[test]
fn nested_meta_meta_bool() {
let meta = Meta::from_list(&[parse_quote! {
meta2
}])
.unwrap();
assert_eq!(meta.meta1, None);
assert!(meta.meta2);
}
#[test]
fn nested_meta_lit_string_errors() {
let err = Meta::from_list(&[parse_quote! {
"meta2"
}])
.unwrap_err();
assert_eq!(
err.to_string(),
Error::unsupported_format("literal").to_string()
);
}
#[test]
fn nested_meta_lit_integer_errors() {
let err = Meta::from_list(&[parse_quote! {
2
}])
.unwrap_err();
assert_eq!(
err.to_string(),
Error::unsupported_format("literal").to_string()
);
}
#[test]
fn nested_meta_lit_bool_errors() {
let err = Meta::from_list(&[parse_quote! {
true
}])
.unwrap_err();
assert_eq!(
err.to_string(),
Error::unsupported_format("literal").to_string()
);
}
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