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respect ignored fields for mutatable structs #3

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respect ignored fields for mutatable structs #3

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9 changes: 6 additions & 3 deletions lain_derive/src/mutations.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -271,13 +271,16 @@ fn mutatable_enum_visitor(variants: &[Variant], cont_ident: &syn::Ident) -> Vec<
fn mutatable_struct_visitor(fields: &[Field]) -> Vec<TokenStream> {
fields
.iter()
.map(|field| {
.filter_map(|field| {
if field.attrs.ignore() {
return None;
}
let (_field_ident, _field_ident_string, initializer) =
field_mutator(field, "self.", false);

quote! {
Some(quote! {
#initializer
}
})
})
.collect()
}
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7 changes: 5 additions & 2 deletions testsuite/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -169,17 +169,20 @@ mod test {

#[test]
fn test_ignored_fields() {
#[derive(NewFuzzed, BinarySerialize, Clone)]
#[derive(NewFuzzed, BinarySerialize, Clone, Mutatable)]
struct IgnoredFieldsStruct {
#[lain(ignore)]
ignored: u8,
}

let mut mutator = get_mutator();

let initialized_struct = IgnoredFieldsStruct::new_fuzzed(&mut mutator, None);
let mut initialized_struct = IgnoredFieldsStruct::new_fuzzed(&mut mutator, None);

assert_eq!(initialized_struct.ignored, 0);

initialized_struct.mutate(&mut mutator, None);
assert_eq!(initialized_struct.ignored, 0);
}

#[test]
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