Avoid adding dashed line outside of docstring (#3581)

crates/ruff/resources/test/fixtures/pydocstyle/sections.py

@@ -58,6 +58,15 @@ def no_underline_and_no_description():  # noqa: D416
     """
 
 
+@expect(_D213)
+@expect("D407: Missing dashed underline after section ('Returns')")
+@expect("D414: Section has no content ('Returns')")
+def no_underline_and_no_newline():  # noqa: D416
+    """Toggle the gizmo.
+
+    Returns"""
+
+
 @expect(_D213)
 @expect("D410: Missing blank line after section ('Returns')")
 @expect("D414: Section has no content ('Returns')")

crates/ruff/src/rules/pydocstyle/rules/sections.rs

@@ -365,15 +365,15 @@ fn blanks_and_section_underline(
                 // Add a dashed line (of the appropriate length) under the section header.
                 let content = format!(
                     "{}{}{}",
+                    checker.stylist.line_ending().as_str(),
                     whitespace::clean(docstring.indentation),
                     "-".repeat(context.section_name.len()),
-                    checker.stylist.line_ending().as_str()
                 );
                 diagnostic.amend(Fix::insertion(
                     content,
                     Location::new(
-                        docstring.expr.location.row() + context.original_index + 1,
-                        0,
+                        docstring.expr.location.row() + context.original_index,
+                        context.line.trim_end().chars().count(),
                     ),
                 ));
             }
@@ -595,15 +595,15 @@ fn blanks_and_section_underline(
                 // Add a dashed line (of the appropriate length) under the section header.
                 let content = format!(
                     "{}{}{}",
+                    checker.stylist.line_ending().as_str(),
                     whitespace::clean(docstring.indentation),
                     "-".repeat(context.section_name.len()),
-                    checker.stylist.line_ending().as_str()
                 );
                 diagnostic.amend(Fix::insertion(
                     content,
                     Location::new(
-                        docstring.expr.location.row() + context.original_index + 1,
-                        0,
+                        docstring.expr.location.row() + context.original_index,
+                        context.line.trim_end().chars().count(),
                     ),
                 ));
             }
@@ -721,14 +721,14 @@ fn common_section(checker: &mut Checker, docstring: &Docstring, context: &Sectio
                 );
                 if checker.patch(diagnostic.kind.rule()) {
                     // Add a newline after the section.
+                    let line = context.following_lines.last().unwrap_or(&context.line);
                     diagnostic.amend(Fix::insertion(
-                        line_end.to_string(),
+                        format!("{}{}", line_end, docstring.indentation),
                         Location::new(
                             docstring.expr.location.row()
                                 + context.original_index
-                                + 1
                                 + context.following_lines.len(),
-                            0,
+                            line.trim_end().chars().count(),
                         ),
                     ));
                 }
@@ -744,14 +744,14 @@ fn common_section(checker: &mut Checker, docstring: &Docstring, context: &Sectio
                 );
                 if checker.patch(diagnostic.kind.rule()) {
                     // Add a newline after the section.
+                    let line = context.following_lines.last().unwrap_or(&context.line);
                     diagnostic.amend(Fix::insertion(
                         line_end.to_string(),
                         Location::new(
                             docstring.expr.location.row()
                                 + context.original_index
-                                + 1
                                 + context.following_lines.len(),
-                            0,
+                            line.trim_end().chars().count(),
                         ),
                     ));
                 }

crates/ruff/src/rules/pydocstyle/snapshots/ruff__rules__pydocstyle__tests__D214_sections.py.snap

@@ -8,18 +8,18 @@ expression: diagnostics
     suggestion: "Remove over-indentation from \"Returns\""
     fixable: true
   location:
-    row: 135
+    row: 144
     column: 4
   end_location:
-    row: 141
+    row: 150
     column: 7
   fix:
     content: "    "
     location:
-      row: 137
+      row: 146
       column: 0
     end_location:
-      row: 137
+      row: 146
       column: 8
   parent: ~
 

crates/ruff/src/rules/pydocstyle/snapshots/ruff__rules__pydocstyle__tests__D215_sections.py.snap

@@ -8,18 +8,18 @@ expression: diagnostics
     suggestion: "Remove over-indentation from \"Returns\" underline"
     fixable: true
   location:
-    row: 147
+    row: 156
     column: 4
   end_location:
-    row: 153
+    row: 162
     column: 7
   fix:
     content: "    "
     location:
-      row: 150
+      row: 159
       column: 0
     end_location:
-      row: 150
+      row: 159
       column: 9
   parent: ~
 - kind:
@@ -28,18 +28,18 @@ expression: diagnostics
     suggestion: "Remove over-indentation from \"Returns\" underline"
     fixable: true
   location:
-    row: 161
+    row: 170
     column: 4
   end_location:
-    row: 165
+    row: 174
     column: 7
   fix:
     content: "    "
     location:
-      row: 164
+      row: 173
       column: 0
     end_location:
-      row: 164
+      row: 173
       column: 9
   parent: ~
 

crates/ruff/src/rules/pydocstyle/snapshots/ruff__rules__pydocstyle__tests__D405_sections.py.snap

@@ -28,18 +28,18 @@ expression: diagnostics
     suggestion: "Capitalize \"Short summary\""
     fixable: true
   location:
-    row: 207
+    row: 216
     column: 4
   end_location:
-    row: 221
+    row: 230
     column: 7
   fix:
     content: Short Summary
     location:
-      row: 209
+      row: 218
       column: 4
     end_location:
-      row: 209
+      row: 218
       column: 17
   parent: ~
 

crates/ruff/src/rules/pydocstyle/snapshots/ruff__rules__pydocstyle__tests__D406_sections.py.snap

@@ -28,18 +28,18 @@ expression: diagnostics
     suggestion: "Add newline after \"Raises\""
     fixable: true
   location:
-    row: 207
+    row: 216
     column: 4
   end_location:
-    row: 221
+    row: 230
     column: 7
   fix:
     content: ""
     location:
-      row: 218
+      row: 227
       column: 10
     end_location:
-      row: 218
+      row: 227
       column: 11
   parent: ~