Don't raise D208 when last line is non-empty (#13372)

Co-authored-by: Micha Reiser <micha@reiser.io>

crates/ruff_linter/src/lib.rs

@@ -46,3 +46,42 @@ pub mod upstream_categories;
 pub mod test;
 
 pub const RUFF_PKG_VERSION: &str = env!("CARGO_PKG_VERSION");
+
+#[cfg(test)]
+mod tests {
+    use std::path::Path;
+
+    use ruff_python_ast::PySourceType;
+
+    use crate::codes::Rule;
+    use crate::settings::LinterSettings;
+    use crate::source_kind::SourceKind;
+    use crate::test::{print_messages, test_contents};
+
+    /// Test for ad-hoc debugging.
+    #[test]
+    #[ignore]
+    fn linter_quick_test() {
+        let code = r#"class Platform:
+    """ Remove sampler
+            Args:
+            Returns:
+            """
+"#;
+        let source_type = PySourceType::Python;
+        let rule = Rule::OverIndentation;
+
+        let source_kind = SourceKind::from_source_code(code.to_string(), source_type)
+            .expect("Source code should be valid")
+            .expect("Notebook to contain python code");
+
+        let (diagnostics, fixed) = test_contents(
+            &source_kind,
+            Path::new("ruff_linter/rules/quick_test"),
+            &LinterSettings::for_rule(rule),
+        );
+
+        assert_eq!(print_messages(&diagnostics), "");
+        assert_eq!(fixed.source_code(), code);
+    }
+}