Fix Checkstyle violations and add expected errors for invalid regex in MariaDBDeleteGenerator

Author: Mohab-Sobhy

src/sqlancer/mariadb/MariaDBProvider.java

@@ -19,7 +19,14 @@
 import sqlancer.common.DBMSCommon;
 import sqlancer.common.query.SQLQueryAdapter;
 import sqlancer.mariadb.MariaDBProvider.MariaDBGlobalState;
-import sqlancer.mariadb.gen.*;
+import sqlancer.mariadb.gen.MariaDBDeleteGenerator;
+import sqlancer.mariadb.gen.MariaDBIndexGenerator;
+import sqlancer.mariadb.gen.MariaDBInsertGenerator;
+import sqlancer.mariadb.gen.MariaDBSetGenerator;
+import sqlancer.mariadb.gen.MariaDBTableAdminCommandGenerator;
+import sqlancer.mariadb.gen.MariaDBTableGenerator;
+import sqlancer.mariadb.gen.MariaDBTruncateGenerator;
+import sqlancer.mariadb.gen.MariaDBUpdateGenerator;
 
 @AutoService(DatabaseProvider.class)
 public class MariaDBProvider extends SQLProviderAdapter<MariaDBGlobalState, MariaDBOptions> {

src/sqlancer/mariadb/gen/MariaDBDeleteGenerator.java

@@ -1,16 +1,16 @@
 package sqlancer.mariadb.gen;
 
+import java.util.Collections;
+
 import sqlancer.Randomly;
 import sqlancer.common.query.ExpectedErrors;
 import sqlancer.common.query.SQLQueryAdapter;
 import sqlancer.common.schema.AbstractTables;
 import sqlancer.mariadb.MariaDBSchema;
-import sqlancer.mariadb.MariaDBSchema.MariaDBTable;
 import sqlancer.mariadb.MariaDBSchema.MariaDBColumn;
+import sqlancer.mariadb.MariaDBSchema.MariaDBTable;
 import sqlancer.mariadb.ast.MariaDBVisitor;
 
-import java.util.Collections;
-
 public final class MariaDBDeleteGenerator {
 
     private MariaDBDeleteGenerator() {
@@ -81,6 +81,13 @@ public static SQLQueryAdapter delete(MariaDBSchema schema, Randomly r) {
             }
         }
 
-        return new SQLQueryAdapter(sb.toString(), errors);
+        String query = sb.toString();
+        if (query.contains("RLIKE") || query.contains("REGEXP")) {
+            errors.add("Regex error");
+            errors.add("quantifier does not follow a repeatable item");
+            errors.add("Got error");
+        }
+
+        return new SQLQueryAdapter(query, errors);
     }
 }