Fixup use

Author: alamb

datafusion/tests/sql/projection.rs

@@ -15,7 +15,8 @@
 // specific language governing permissions and limitations
 // under the License.
 
-use datafusion::logical_plan::LogicalPlanBuilder;
+use datafusion::logical_plan::{LogicalPlanBuilder, UNNAMED_TABLE};
+use tempfile::TempDir;
 
 use super::*;
 
@@ -179,7 +180,7 @@ async fn projection_on_table_scan() -> Result<()> {
 #[tokio::test]
 async fn preserve_nullability_on_projection() -> Result<()> {
     let tmp_dir = TempDir::new()?;
-    let ctx = create_ctx(&tmp_dir, 1).await?;
+    let ctx = partitioned_csv::create_ctx(&tmp_dir, 1).await?;
 
     let schema: Schema = ctx.table("test").unwrap().schema().clone().into();
     assert!(!schema.field_with_name("c1")?.is_nullable());
@@ -254,3 +255,13 @@ async fn projection_on_memory_scan() -> Result<()> {
 
     Ok(())
 }
+
+fn assert_fields_eq(plan: &LogicalPlan, expected: Vec<&str>) {
+    let actual: Vec<String> = plan
+        .schema()
+        .fields()
+        .iter()
+        .map(|f| f.name().clone())
+        .collect();
+    assert_eq!(actual, expected);
+}