content: /*
   * 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.
   */
  
  package org.apache.cassandra.index.sai.cql;
  
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import org.apache.cassandra.cql3.UntypedResultSet;
  import org.apache.cassandra.index.sai.SAITester;
  import org.apache.cassandra.service.StorageService;
  
  public class EmptyStringLifecycleTest extends SAITester
  {
      @BeforeClass
      public static void setup()
      {
          StorageService.instance.unsafeSetInitialized();
      }
  
      @Test
      public void testBeforeAndAfterFlush()
      {
          createTable("CREATE TABLE %s (k int PRIMARY KEY, v text)");
          disableCompaction(KEYSPACE);
          createIndex(String.format(CREATE_INDEX_TEMPLATE, 'v'));
  
          execute("INSERT INTO %s (k, v) VALUES (0, '')");
          execute("INSERT INTO %s (k) VALUES (1)");
  
          UntypedResultSet rows = execute("SELECT * FROM %s WHERE v = ''");
          assertRows(rows, row(0, ""));
  
          flush();
          rows = execute("SELECT * FROM %s WHERE v = ''");
          assertRows(rows, row(0, ""));
      }
  
      @Test
      public void testAfterInitialBuild()
      {
          createTable("CREATE TABLE %s (k int PRIMARY KEY, v text)");
          disableCompaction(KEYSPACE);
  
          execute("INSERT INTO %s (k, v) VALUES (0, '')");
          execute("INSERT INTO %s (k) VALUES (1)");
          createIndex(String.format(CREATE_INDEX_TEMPLATE, 'v'));
  
          UntypedResultSet rows = execute("SELECT * FROM %s WHERE v = ''");
          assertRows(rows, row(0, ""));
      }
  
      @Test
      public void testAfterCompaction()
      {
          createTable("CREATE TABLE %s (k int PRIMARY KEY, v text)");
          disableCompaction(KEYSPACE);
          createIndex(String.format(CREATE_INDEX_TEMPLATE, 'v'));
  
          execute("INSERT INTO %s (k, v) VALUES (0, '')");
          execute("INSERT INTO %s (k) VALUES (1)");
          flush();
  
          execute("INSERT INTO %s (k, v) VALUES (1, '')");
          flush();
          
          compact();
  
          UntypedResultSet rows = execute("SELECT * FROM %s WHERE v = ''");
          assertRows(rows, row(1, ""), row(0, ""));
      }
  }
  