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   * 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.utils;
  
  import java.util.Arrays;
  import java.util.List;
  
  import org.assertj.core.api.Assertions;
  import org.junit.Test;
  
  import accord.utils.Gens;
  import accord.utils.LazyToString;
  import org.apache.cassandra.db.marshal.AbstractType;
  import org.apache.cassandra.db.marshal.CounterColumnType;
  import org.apache.cassandra.db.marshal.DecimalType;
  import org.apache.cassandra.db.marshal.DurationType;
  import org.apache.cassandra.db.marshal.EmptyType;
  import org.apache.cassandra.schema.ColumnMetadata;
  import org.apache.cassandra.utils.CassandraGenerators.TableMetadataBuilder;
  
  import static accord.utils.Property.qt;
  import static org.apache.cassandra.utils.Generators.toGen;
  
  public class CassandraGeneratorsTest
  {
      private static final List<AbstractType<?>> NOT_ALLOWED_IN_PRIMARY_KEY = Arrays.asList(EmptyType.instance,
                                                                                            DurationType.instance,
                                                                                            DecimalType.instance,
                                                                                            CounterColumnType.instance);
  
      @Test
      public void partitionerToToken()
      {
          qt().forAll(Gens.random(), toGen(CassandraGenerators.partitioners()))
              .check((rs, p) -> Assertions.assertThat(toGen(CassandraGenerators.token(p)).next(rs)).isNotNull());
      }
  
      @Test
      public void partitionerKeys()
      {
          qt().forAll(Gens.random(), toGen(CassandraGenerators.partitioners()))
              .check((rs, p) -> Assertions.assertThat(toGen(CassandraGenerators.decoratedKeys(i -> p)).next(rs)).isNotNull());
      }
  
      @Test
      public void primaryKeysNoUnsafeTypes()
      {
          qt().forAll(toGen(new TableMetadataBuilder().build())).check(table -> {
              for (ColumnMetadata pk : table.primaryKeyColumns())
              {
                  for (AbstractType<?> t : NOT_ALLOWED_IN_PRIMARY_KEY)
                  {
                      Assertions.assertThat(AbstractTypeGenerators.contains(pk.type, t))
                                .describedAs("Expected type %s not to be found in %s", t.asCQL3Type(), new LazyToString(() -> AbstractTypeGenerators.typeTree(pk.type)))
                                .isFalse();
                  }
              }
          });
      }
  }
  