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.plugin.settingprovider;
  
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  import static org.testng.Assert.assertEquals;
  import static org.testng.Assert.assertNull;
  
  import io.micrometer.core.instrument.Metrics;
  import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
  import lombok.SneakyThrows;
  import org.mockito.Mock;
  import org.mockito.MockitoAnnotations;
  import org.testng.annotations.AfterMethod;
  import org.testng.annotations.BeforeMethod;
  import org.testng.annotations.Test;
  
  public class MonitoredSettingProviderTest {
      @Mock
      private ISettingProvider provider;
  
      private SimpleMeterRegistry registry;
      private AutoCloseable closeable;
  
      @BeforeMethod
      public void setup() {
          registry = new SimpleMeterRegistry();
          Metrics.globalRegistry.clear();
          Metrics.addRegistry(registry);
          closeable = MockitoAnnotations.openMocks(this);
      }
  
      @SneakyThrows
      @AfterMethod
      public void tearDown() {
          Metrics.removeRegistry(registry);
          closeable.close();
      }
  
      @Test
      public void provideValidValue() {
          MonitoredSettingProvider monitoredSettingProvider = new MonitoredSettingProvider(provider);
          String tenantId = "tenantA";
          when(provider.provide(Setting.MaxTopicLevels, tenantId)).thenReturn(64);
          int levels = monitoredSettingProvider.provide(Setting.MaxTopicLevels, tenantId);
          assertEquals(levels, 64);
          verify(provider).provide(Setting.MaxTopicLevels, tenantId);
          assertEquals(registry.get("call.exec.timer").timer().count(), 1);
      }
  
      @Test
      public void provideInvalidValue() {
          MonitoredSettingProvider monitoredSettingProvider = new MonitoredSettingProvider(provider);
          String tenantId = "tenantA";
          when(provider.provide(Setting.MaxTopicLevels, tenantId)).thenReturn(new Object());
          assertNull(monitoredSettingProvider.provide(Setting.MaxTopicLevels, tenantId));
          verify(provider).provide(Setting.MaxTopicLevels, tenantId);
          assertEquals(registry.get("call.exec.timer").timer().count(), 1);
          assertEquals(registry.get("call.exec.fail.count").counter().count(), 1);
      }
  
      @Test
      public void provideNullValue() {
          MonitoredSettingProvider monitoredSettingProvider = new MonitoredSettingProvider(provider);
          String tenantId = "tenantA";
          when(provider.provide(Setting.MaxTopicLevels, tenantId)).thenReturn(null);
          assertNull(monitoredSettingProvider.provide(Setting.MaxTopicLevels, tenantId));
          verify(provider).provide(Setting.MaxTopicLevels, tenantId);
          assertEquals(registry.get("call.exec.timer").timer().count(), 1);
          assertEquals(registry.get("call.exec.fail.count").counter().count(), 0);
      }
  
      @Test
      public void provideThrows() {
          MonitoredSettingProvider monitoredSettingProvider = new MonitoredSettingProvider(provider);
          String tenantId = "tenantA";
          when(provider.provide(Setting.MaxTopicLevels, tenantId)).thenThrow(new RuntimeException("Mocked exception"));
          assertNull(monitoredSettingProvider.provide(Setting.MaxTopicLevels, tenantId));
          verify(provider).provide(Setting.MaxTopicLevels, tenantId);
          assertEquals(registry.get("call.exec.fail.count").counter().count(), 1);
      }
  }
  