Add test to ensure that the missing_doc_code_examples is not triggere…

…d on foreign trait implementations

src/test/rustdoc-ui/doc-without-codeblock.rs

@@ -11,3 +11,12 @@ pub mod foo {
  //~^ ERROR missing code example in this documentation
  pub fn bar() {}
 }
+
+// This impl is here to ensure the lint isn't emitted for foreign traits implementations.
+impl std::ops::Neg for Foo {
+ type Output = Self;
+
+ fn neg(self) -> Self::Output {
+ Self
+ }
+}

src/test/rustdoc-ui/doc-without-codeblock.stderr

@@ -6,7 +6,7 @@ LL | |
 LL | | /// Some docs.
 LL | |
 ... |
-LL | | pub fn bar() {}
+LL | | }
 LL | | }
  | |_^
  |