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.bifromq.basecrdt.core.internal;
  
  import static org.apache.bifromq.basecrdt.core.api.CRDTURI.toURI;
  import static org.apache.bifromq.basecrdt.core.api.CausalCRDTType.dwflag;
  import static org.testng.Assert.assertEquals;
  import static org.testng.Assert.assertFalse;
  import static org.testng.Assert.assertTrue;
  
  import com.google.protobuf.ByteString;
  import java.time.Duration;
  import lombok.extern.slf4j.Slf4j;
  import org.apache.bifromq.basecrdt.core.api.DWFlagOperation;
  import org.apache.bifromq.basecrdt.core.api.IDWFlag;
  import org.apache.bifromq.basecrdt.proto.Replica;
  import org.testng.annotations.Test;
  
  @Slf4j
  public class DWFlagTest extends CRDTTest {
      private final Replica leftReplica = Replica.newBuilder()
          .setUri(toURI(dwflag, "dwflag"))
          .setId(ByteString.copyFromUtf8("left-address"))
          .build();
      private final Replica rightReplica = Replica.newBuilder()
          .setUri(toURI(dwflag, "dwflag"))
          .setId(ByteString.copyFromUtf8("right-address"))
          .build();
  
      @Test
      public void testOperation() {
          DWFlagInflater dwFlagInflater = new DWFlagInflater("testStore", leftReplica,
              newStateLattice(leftReplica, 1000), executor, Duration.ofMillis(100));
          IDWFlag dwFlag = dwFlagInflater.getCRDT();
          assertEquals(dwFlag.id(), leftReplica);
  
          assertTrue(dwFlag.read());
          dwFlag.execute(DWFlagOperation.disable()).join();
          assertFalse(dwFlag.read());
  
          dwFlag.execute(DWFlagOperation.enable());
          dwFlag.execute(DWFlagOperation.disable()).join();
          assertFalse(dwFlag.read());
  
          dwFlag.execute(DWFlagOperation.enable()).join();
          assertTrue(dwFlag.read());
      }
  
      @Test
      public void testJoin() {
          DWFlagInflater leftInflater = new DWFlagInflater("store1", leftReplica,
              newStateLattice(leftReplica, 1000000),
              executor, Duration.ofMillis(100));
          IDWFlag left = leftInflater.getCRDT();
  
          DWFlagInflater rightInflater = new DWFlagInflater("store2", rightReplica,
              newStateLattice(rightReplica, 1000000),
              executor, Duration.ofMillis(100));
          IDWFlag right = rightInflater.getCRDT();
  
          left.execute(DWFlagOperation.disable()).join();
          right.execute(DWFlagOperation.enable()).join();
          // nothing to send from right to left
          assertFalse(rightInflater
              .delta(leftInflater.latticeEvents(), leftInflater.historyEvents(), 10).join().isPresent());
          // something to send from left to right
          rightInflater.join(leftInflater
              .delta(rightInflater.latticeEvents(), rightInflater.historyEvents(), 10).join().get()).join();
  
          assertFalse(left.read());
          assertEquals(right.read(), left.read());
  
          right.execute(DWFlagOperation.enable()).join();
          assertTrue(right.read());
  
          sync(leftInflater, rightInflater);
          assertTrue(left.read());
          assertEquals(right.read(), left.read());
      }
  }
  