[VL] Rename test class TestOperator.scala to MiscOperatorSuite

backends-velox/src/test/scala/org/apache/gluten/execution/TestOperator.scala → backends-velox/src/test/scala/org/apache/gluten/execution/MiscOperatorSuite.scala

@@ -35,7 +35,7 @@ import java.util.concurrent.TimeUnit
 
 import scala.collection.JavaConverters
 
-class TestOperator extends VeloxWholeStageTransformerSuite with AdaptiveSparkPlanHelper {
+class MiscOperatorSuite extends VeloxWholeStageTransformerSuite with AdaptiveSparkPlanHelper {
 
   protected val rootPath: String = getClass.getResource("/").getPath
   override protected val resourcePath: String = "/tpch-data-parquet-velox"