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.beam.sdk.metrics;
  
  import java.util.List;
  import java.util.Set;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableList;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableSet;
  import org.junit.Assert;
  import org.junit.Test;
  
  public class BoundedTrieResultTest {
  
    @Test
    public void testCreate() {
      Set<List<String>> inputSet =
          ImmutableSet.of(
              ImmutableList.of("a", "b"), ImmutableList.of("c", "d"), ImmutableList.of("e"));
      BoundedTrieResult result = BoundedTrieResult.create(inputSet);
      Assert.assertEquals(inputSet, result.getResult());
    }
  
    @Test
    public void testCreate_empty() {
      Set<List<String>> inputSet = ImmutableSet.of();
      BoundedTrieResult result = BoundedTrieResult.create(inputSet);
      Assert.assertEquals(inputSet, result.getResult());
    }
  
    @Test
    public void testEmpty() {
      BoundedTrieResult result = BoundedTrieResult.empty();
      Assert.assertTrue(result.getResult().isEmpty());
    }
  
    @Test
    public void testImmutability() {
      Set<List<String>> inputSet =
          ImmutableSet.of(
              ImmutableList.of("a", "b"), ImmutableList.of("c", "d"), ImmutableList.of("e"));
      BoundedTrieResult result = BoundedTrieResult.create(inputSet);
  
      // Try to modify the set returned by getResult()
      try {
        result.getResult().add(ImmutableList.of("f"));
        Assert.fail("UnsupportedOperationException expected");
      } catch (UnsupportedOperationException expected) {
      }
    }
  }
  