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.test.asserts;
  
  import com.codahale.metrics.Counter;
  import com.codahale.metrics.Counting;
  import com.codahale.metrics.Histogram;
  import com.codahale.metrics.Snapshot;
  import org.assertj.core.api.AbstractObjectAssert;
  
  public class ExtendedAssertions
  {
      public static CounterAssert assertThat(Counter counter)
      {
          return new CounterAssert(counter);
      }
  
      public static HistogramAssert assertThat(Histogram histogram)
      {
          return new HistogramAssert(histogram);
      }
  
      public static abstract class CountingAssert<T extends Counting, Self extends CountingAssert<T, Self>> extends AbstractObjectAssert<Self, T>
      {
          protected CountingAssert(T t, Class<?> selfType)
          {
              super(t, selfType);
          }
  
          public Self hasCount(int expected)
          {
              isNotNull();
              if (actual.getCount() != expected)
                  throw failure("%s count was %d, but expected %d", actual.getClass().getSimpleName(), actual.getCount(), expected);
              return (Self) this;
          }
  
          public Self isEmpty()
          {
              return hasCount(0);
          }
      }
  
      public static class CounterAssert extends CountingAssert<Counter, CounterAssert>
      {
          public CounterAssert(Counter counter)
          {
              super(counter, CounterAssert.class);
          }
      }
  
      public static class HistogramAssert extends CountingAssert<Histogram, HistogramAssert>
      {
          public HistogramAssert(Histogram histogram)
          {
              super(histogram, HistogramAssert.class);
          }
  
          public HistogramAssert hasMax(long expected)
          {
              isNotNull();
              Snapshot snapshot = actual.getSnapshot();
              if (snapshot.getMax() != expected)
                  throw failure("Expected max %d but given %d", expected, snapshot.getMax());
              return this;
          }
      }
  }
  