fix clippy and add license

datafusion/core/tests/user_defined/insert_operation.rs

@@ -1,3 +1,20 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
 use std::{any::Any, sync::Arc};
 
 use arrow_schema::{DataType, Field, Schema, SchemaRef};
@@ -20,16 +37,16 @@ async fn insert_operation_is_passed_correctly_to_table_provider() {
         .unwrap();
 
     let sql = "INSERT INTO testing (column) VALUES (1)";
-    assert_insert_op(&ctx, &sql, InsertOp::Append).await;
+    assert_insert_op(&ctx, sql, InsertOp::Append).await;
 
     let sql = "INSERT OVERWRITE testing (column) VALUES (1)";
-    assert_insert_op(&ctx, &sql, InsertOp::Overwrite).await;
+    assert_insert_op(&ctx, sql, InsertOp::Overwrite).await;
 
     let sql = "REPLACE INTO testing (column) VALUES (1)";
-    assert_insert_op(&ctx, &sql, InsertOp::Replace).await;
+    assert_insert_op(&ctx, sql, InsertOp::Replace).await;
 
     let sql = "INSERT OR REPLACE INTO testing (column) VALUES (1)";
-    assert_insert_op(&ctx, &sql, InsertOp::Replace).await;
+    assert_insert_op(&ctx, sql, InsertOp::Replace).await;
 }
 
 async fn assert_insert_op(ctx: &SessionContext, sql: &str, insert_op: InsertOp) {
@@ -46,6 +63,7 @@ fn session_ctx_with_dialect(dialect: impl Into<String>) -> SessionContext {
     SessionContext::new_with_config(config)
 }
 
+#[derive(Debug)]
 struct TestInsertTableProvider {
     schema: SchemaRef,
 }