74 lines
1.6 KiB
Rust
74 lines
1.6 KiB
Rust
//! Test that skipped fields are not read into structs when they appear in input.
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use darling::{FromDeriveInput, FromMeta};
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use syn::parse_quote;
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#[derive(Debug, PartialEq, Eq, FromDeriveInput)]
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#[darling(attributes(skip_test))]
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pub struct Lorem {
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ipsum: String,
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#[darling(skip)]
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dolor: u8,
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}
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/// Verify variant-level and field-level skip work correctly for enums.
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#[derive(Debug, FromMeta)]
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pub enum Sit {
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Amet(bool),
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#[darling(skip)]
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Foo {
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hello: bool,
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},
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Bar {
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hello: bool,
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#[darling(skip)]
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world: u8,
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},
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}
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#[test]
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fn verify_skipped_field_not_required() {
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let di = parse_quote! {
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#[skip_test(ipsum = "Hello")]
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struct Baz;
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};
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assert_eq!(
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Lorem::from_derive_input(&di).unwrap(),
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Lorem {
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ipsum: "Hello".to_string(),
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dolor: 0,
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}
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);
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}
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/// This test verifies that a skipped field will still prefer an explicit default
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/// over the default that would come from its field type. It would be incorrect for
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/// `Defaulting::from_derive_input` to fail here, and it would be wrong for the value
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/// of `dolor` to be `None`.
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#[test]
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fn verify_default_supersedes_from_none() {
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fn default_dolor() -> Option<u8> {
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Some(2)
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}
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#[derive(Debug, PartialEq, Eq, FromDeriveInput)]
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#[darling(attributes(skip_test))]
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pub struct Defaulting {
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#[darling(skip, default = "default_dolor")]
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dolor: Option<u8>,
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}
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let di = parse_quote! {
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#[skip_test]
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struct Baz;
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};
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assert_eq!(
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Defaulting::from_derive_input(&di).unwrap(),
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Defaulting { dolor: Some(2) }
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)
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}
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