Include method name in B027 message (#2403)

src/rules/flake8_bugbear/rules/abstract_base_class.rs

@@ -62,16 +62,19 @@ pub fn abstract_base_class(
             continue;
         }
 
-        let (StmtKind::FunctionDef {
+        let (
+            StmtKind::FunctionDef {
                 decorator_list,
                 body,
+                name: method_name,
+                ..
+            } | StmtKind::AsyncFunctionDef {
+                decorator_list,
+                body,
+                name: method_name,
                 ..
             }
-            | StmtKind::AsyncFunctionDef {
+        ) = &stmt.node else {
-                decorator_list,
-                body,
-                ..
-            }) = &stmt.node else {
             continue;
         };
 
@@ -89,7 +92,7 @@ pub fn abstract_base_class(
         if !has_abstract_decorator && is_empty_body(body) && !is_overload(checker, decorator_list) {
             checker.diagnostics.push(Diagnostic::new(
                 violations::EmptyMethodWithoutAbstractDecorator {
-                    name: name.to_string(),
+                    name: format!("{name}.{method_name}"),
                 },
                 Range::from_located(stmt),
             ));

src/rules/flake8_bugbear/snapshots/ruff__rules__flake8_bugbear__tests__B027_B027.py.snap

@@ -4,7 +4,7 @@ expression: diagnostics
 ---
 - kind:
     EmptyMethodWithoutAbstractDecorator:
-      name: AbstractClass
+      name: AbstractClass.empty_1
   location:
     row: 13
     column: 4
@@ -15,7 +15,7 @@ expression: diagnostics
   parent: ~
 - kind:
     EmptyMethodWithoutAbstractDecorator:
-      name: AbstractClass
+      name: AbstractClass.empty_2
   location:
     row: 16
     column: 4
@@ -26,7 +26,7 @@ expression: diagnostics
   parent: ~
 - kind:
     EmptyMethodWithoutAbstractDecorator:
-      name: AbstractClass
+      name: AbstractClass.empty_3
   location:
     row: 19
     column: 4
@@ -37,7 +37,7 @@ expression: diagnostics
   parent: ~
 - kind:
     EmptyMethodWithoutAbstractDecorator:
-      name: AbstractClass
+      name: AbstractClass.empty_4
   location:
     row: 23
     column: 4