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.ambari.server.controller.jmx;
  
  import static java.util.Arrays.asList;
  import static org.hamcrest.core.Is.is;
  import static org.junit.Assert.assertThat;
  import static org.junit.internal.matchers.IsCollectionContaining.hasItems;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Optional;
  
  import org.junit.Before;
  import org.junit.Test;
  
  public class JMXMetricHolderTest {
    private JMXMetricHolder metrics = new JMXMetricHolder();
  
    @Before
    public void setUp() {
      metrics.setBeans(asList(
        new HashMap<String, Object>() {{
          put("name", "bean1");
          put("value", "val1");
        }},
        new HashMap<String, Object>() {{
          put("name", "bean2");
          put("value", "val2");
        }},
        new HashMap<String, Object>() {{
          put("name", "nested");
          put("value", new HashMap<String, Object>() {{
            put("key1", "nested-val1");
            put("key2", "nested-val2");
          }});
        }}
      ));
    }
  
    @Test
    public void testFindSingleBeanByName() throws Exception {
      assertThat(metrics.find("bean1/value"), is(Optional.of("val1")));
      assertThat(metrics.find("bean2/value"), is(Optional.of("val2")));
      assertThat(metrics.find("bean3/notfound"), is(Optional.empty()));
    }
  
    @Test
    public void testFindMultipleBeansByName() throws Exception {
      List<Object> result = metrics.findAll(asList("bean1/value", "bean2/value", "bean3/notfound"));
      assertThat(result, hasItems("val1", "val2"));
    }
  
  
    @Test
    public void testFindNestedBean() throws Exception {
      List<Object> result = metrics.findAll(asList("nested/value[key1]", "nested/value[key2]"));
      assertThat(result, hasItems("nested-val1", "nested-val2"));
    }
  }