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 java.util.Collections.emptyIterator;
  import static org.apache.bifromq.basecrdt.core.api.CRDTURI.toURI;
  import static org.apache.bifromq.basecrdt.core.api.CausalCRDTType.mvreg;
  import static org.testng.Assert.assertEquals;
  import static org.testng.Assert.assertFalse;
  
  import com.google.common.collect.Lists;
  import com.google.common.collect.Sets;
  import com.google.protobuf.ByteString;
  import java.time.Duration;
  import org.apache.bifromq.basecrdt.core.api.IMVReg;
  import org.apache.bifromq.basecrdt.core.api.MVRegOperation;
  import org.apache.bifromq.basecrdt.proto.Replica;
  import org.testng.annotations.Test;
  
  public class MVRegTest extends CRDTTest {
      private final Replica leftReplica = Replica.newBuilder()
          .setUri(toURI(mvreg, "mvreg"))
          .setId(ByteString.copyFromUtf8("left-address"))
          .build();
      private final Replica rightReplica = Replica.newBuilder()
          .setUri(toURI(mvreg, "mvreg"))
          .setId(ByteString.copyFromUtf8("right-address"))
          .build();
      private final ByteString val1 = ByteString.copyFromUtf8("v1");
      private final ByteString val2 = ByteString.copyFromUtf8("v2");
      private final ByteString val3 = ByteString.copyFromUtf8("v3");
  
      @Test
      public void testOperation() {
          MVRegInflater mvRegInflater = new MVRegInflater("storeId", leftReplica,
              newStateLattice(leftReplica, 1000), executor, Duration.ofMillis(100));
          IMVReg mvReg = mvRegInflater.getCRDT();
          assertEquals(mvReg.id(), leftReplica);
  
          mvReg.execute(MVRegOperation.write(val1)).join();
          TestUtil.assertSame(Sets.<ByteString>newHashSet(val1).iterator(), mvReg.read());
  
          mvReg.execute(MVRegOperation.reset());
          mvReg.execute(MVRegOperation.write(val2)).join();
          TestUtil.assertSame(Sets.<ByteString>newHashSet(val2).iterator(), mvReg.read());
  
          mvReg.execute(MVRegOperation.reset()).join();
          TestUtil.assertSame(emptyIterator(), mvReg.read());
      }
  
      @Test
      public void testJoin() {
          MVRegInflater leftInflater = new MVRegInflater("leftStore", leftReplica, newStateLattice(leftReplica, 10000),
              executor, Duration.ofMillis(100));
          IMVReg left = leftInflater.getCRDT();
  
          MVRegInflater rightInflater = new MVRegInflater("rightStore", rightReplica, newStateLattice(rightReplica, 10000),
              executor, Duration.ofMillis(100));
          IMVReg right = rightInflater.getCRDT();
  
          left.execute(MVRegOperation.write(val1)).join();
          right.execute(MVRegOperation.write(val2)).join();
          sync(leftInflater, rightInflater);
  
          TestUtil.assertUnorderedSame(Sets.newHashSet(val1, val2).iterator(), left.read());
          TestUtil.assertSame(left.read(), right.read());
  
          left.execute(MVRegOperation.write(val3)).join();
          right.execute(MVRegOperation.write(val3)).join();
          sync(leftInflater, rightInflater);
          TestUtil.assertSame(Lists.newArrayList(val3, val3).iterator(), left.read());
          TestUtil.assertSame(left.read(), right.read());
  
          left.execute(MVRegOperation.reset()).join();
          sync(leftInflater, rightInflater);
          assertFalse(left.read().hasNext());
          TestUtil.assertSame(left.read(), right.read());
      }
  
      @Test
      public void testJoin1() throws InterruptedException {
          MVRegInflater leftInflater = new MVRegInflater("leftStore", leftReplica, newStateLattice(leftReplica, 1000),
              executor, Duration.ofMillis(100));
          IMVReg left = leftInflater.getCRDT();
  
          MVRegInflater rightInflater = new MVRegInflater("rightStore", rightReplica, newStateLattice(rightReplica, 1000),
              executor, Duration.ofMillis(100));
          IMVReg right = rightInflater.getCRDT();
  
          left.execute(MVRegOperation.write(val1)).join();
          sync(leftInflater, rightInflater);
  
          TestUtil.assertUnorderedSame(Sets.<ByteString>newHashSet(val1).iterator(), left.read());
          TestUtil.assertSame(left.read(), right.read());
  
          left.execute(MVRegOperation.reset()).join();
          Thread.sleep(3000); // waiting for compaction happens
          sync(leftInflater, rightInflater);
  
          TestUtil.assertSame(Lists.<ByteString>newArrayList(val1).iterator(), left.read());
          TestUtil.assertSame(left.read(), right.read());
      }
  }
  