// run-rustfix #![warn(clippy::unwrap_or_else_default)] #![allow(dead_code)] #![allow(clippy::unnecessary_wraps)] /// Checks implementation of the `UNWRAP_OR_ELSE_DEFAULT` lint. fn unwrap_or_else_default() { struct Foo; impl Foo { fn new() -> Foo { Foo } // fake default, we should not trigger on this fn default() -> Foo { Foo } } struct HasDefaultAndDuplicate; impl HasDefaultAndDuplicate { fn default() -> Self { HasDefaultAndDuplicate } } impl Default for HasDefaultAndDuplicate { fn default() -> Self { HasDefaultAndDuplicate } } enum Enum { A(), } fn make(_: V) -> T { unimplemented!(); } let with_enum = Some(Enum::A()); with_enum.unwrap_or_else(Enum::A); let with_new = Some(vec![1]); with_new.unwrap_or_else(Vec::new); let with_err: Result<_, ()> = Ok(vec![1]); with_err.unwrap_or_else(make); // should not be changed let with_fake_default = None::; with_fake_default.unwrap_or_else(Foo::default); // should not be changed let with_fake_default2 = None::; with_fake_default2.unwrap_or_else(::default); let with_real_default = None::; with_real_default.unwrap_or_else(::default); let with_default_trait = Some(1); with_default_trait.unwrap_or_else(Default::default); let with_default_type = Some(1); with_default_type.unwrap_or_else(u64::default); } fn main() {}