add additional testcases; check doc comment not from expansion

Author: Jacherr

clippy_lints/src/doc/doc_comment_double_space_linebreak.rs

@@ -32,6 +32,7 @@ fn collect_doc_replacements(attrs: &[Attribute]) -> Vec<(Span, String)> {
         .iter()
         .filter_map(|attr| {
             if let AttrKind::DocComment(com_kind, sym) = attr.kind
+                && !attr.span.from_expansion()
                 && com_kind == CommentKind::Line
                 && let comment = sym.as_str()
                 && comment.ends_with("  ")

clippy_lints/src/doc/mod.rs

@@ -438,7 +438,7 @@ declare_clippy_lint! {
     /// fn add(l: i32, r: i32) -> i32 {
     ///     l + r
     /// }
-    /// ``````
+    /// ```
     ///
     /// Use instead:
     /// ```no_run
@@ -450,7 +450,7 @@ declare_clippy_lint! {
     /// ```
     #[clippy::version = "1.80.0"]
     pub DOC_COMMENT_DOUBLE_SPACE_LINEBREAK,
-    restriction,
+    pedantic,
     "double-space used for doc comment linebreak instead of `\\`"
 }
 

tests/ui/doc/doc_comment_double_space_linebreak.fixed

@@ -18,8 +18,9 @@ fn single_line_split() {}
 
 // note: cargo fmt can remove double spaces from normal and block comments
 // Should not warn on normal comments  
-// with double spaces at the end of a line
+// with double spaces at the end of a line  
 
+#[doc = "This is a doc attribute, which should not be linted"]
 fn normal_comment() {
     /*
        Should not warn on block comments
@@ -40,4 +41,21 @@ fn double_space_doc_comment() {}
 /// as a line-break
 fn back_slash_doc_comment() {}
 
+/// 🌹 are 🟥\
+/// 🌷 are 🟦\
+/// 📎 is 😎\
+/// and so are 🫵\
+/// (hopefully no formatting weirdness linting this)
+fn multi_byte_chars_tada() {}
+
+macro_rules! macro_that_makes_function {
+   () => {
+      /// Shouldn't lint on this!  
+      /// (hopefully)
+      fn my_macro_created_function() {}
+   }
+}
+
+macro_that_makes_function!();
+
 fn main() {}

tests/ui/doc/doc_comment_double_space_linebreak.rs

@@ -18,8 +18,9 @@ fn single_line_split() {}
 
 // note: cargo fmt can remove double spaces from normal and block comments
 // Should not warn on normal comments  
-// with double spaces at the end of a line
+// with double spaces at the end of a line  
 
+#[doc = "This is a doc attribute, which should not be linted"]
 fn normal_comment() {
     /*
        Should not warn on block comments
@@ -40,4 +41,21 @@ fn double_space_doc_comment() {}
 /// as a line-break
 fn back_slash_doc_comment() {}
 
+/// 🌹 are 🟥  
+/// 🌷 are 🟦  
+/// 📎 is 😎  
+/// and so are 🫵  
+/// (hopefully no formatting weirdness linting this)
+fn multi_byte_chars_tada() {}
+
+macro_rules! macro_that_makes_function {
+   () => {
+      /// Shouldn't lint on this!  
+      /// (hopefully)
+      fn my_macro_created_function() {}
+   }
+}
+
+macro_that_makes_function!();
+
 fn main() {}

tests/ui/doc/doc_comment_double_space_linebreak.stderr

@@ -8,7 +8,7 @@ LL | //! Should warn on double space linebreaks
    = help: to override `-D warnings` add `#[allow(clippy::doc_comment_double_space_linebreak)]`
 
 error: doc comments should use a back-slash (\) instead of a double space to indicate a linebreak
-  --> tests/ui/doc/doc_comment_double_space_linebreak.rs:34:1
+  --> tests/ui/doc/doc_comment_double_space_linebreak.rs:35:1
    |
 LL | / /// Should warn when doc comment uses double space  
 LL | | /// as a line-break, even when there are multiple  
@@ -20,5 +20,22 @@ LL + /// Should warn when doc comment uses double space\
 LL + /// as a line-break, even when there are multiple\
    |
 
-error: aborting due to 2 previous errors
+error: doc comments should use a back-slash (\) instead of a double space to indicate a linebreak
+  --> tests/ui/doc/doc_comment_double_space_linebreak.rs:44:1
+   |
+LL | / /// 🌹 are 🟥  
+LL | | /// 🌷 are 🟦  
+LL | | /// 📎 is 😎  
+LL | | /// and so are 🫵  
+   | |___________________^
+   |
+help: replace this double space with a back-slash
+   |
+LL ~ /// 🌹 are 🟥\
+LL ~ /// 🌷 are 🟦\
+LL ~ /// 📎 is 😎\
+LL ~ /// and so are 🫵\
+   |
+
+error: aborting due to 3 previous errors