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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 com.datastax.oss.driver.internal.core.config.map;
  
  import static com.datastax.oss.driver.Assertions.assertThat;
  
  import com.datastax.oss.driver.api.core.config.DriverConfig;
  import com.datastax.oss.driver.api.core.config.DriverConfigLoader;
  import com.datastax.oss.driver.api.core.config.DriverExecutionProfile;
  import com.datastax.oss.driver.api.core.config.OptionsMap;
  import com.datastax.oss.driver.internal.core.config.MockOptions;
  import com.datastax.oss.driver.internal.core.config.MockTypedOptions;
  import org.junit.Test;
  
  public class MapBasedDriverConfigTest {
  
    @Test
    public void should_load_minimal_config_with_no_profiles() {
      OptionsMap source = new OptionsMap();
      source.put(MockTypedOptions.INT1, 42);
      DriverConfig config = DriverConfigLoader.fromMap(source).getInitialConfig();
  
      assertThat(config).hasIntOption(MockOptions.INT1, 42);
    }
  
    @Test
    public void should_inherit_option_in_profile() {
      OptionsMap source = new OptionsMap();
      source.put(MockTypedOptions.INT1, 42);
      // need to add an unrelated option to create the profile
      source.put("profile1", MockTypedOptions.INT2, 1);
      DriverConfig config = DriverConfigLoader.fromMap(source).getInitialConfig();
  
      assertThat(config)
          .hasIntOption(MockOptions.INT1, 42)
          .hasIntOption("profile1", MockOptions.INT1, 42);
    }
  
    @Test
    public void should_override_option_in_profile() {
      OptionsMap source = new OptionsMap();
      source.put(MockTypedOptions.INT1, 42);
      source.put("profile1", MockTypedOptions.INT1, 43);
      DriverConfig config = DriverConfigLoader.fromMap(source).getInitialConfig();
  
      assertThat(config)
          .hasIntOption(MockOptions.INT1, 42)
          .hasIntOption("profile1", MockOptions.INT1, 43);
    }
  
    @Test
    public void should_create_derived_profile_with_new_option() {
      OptionsMap source = new OptionsMap();
      source.put(MockTypedOptions.INT1, 42);
      DriverConfig config = DriverConfigLoader.fromMap(source).getInitialConfig();
      DriverExecutionProfile base = config.getDefaultProfile();
      DriverExecutionProfile derived = base.withInt(MockOptions.INT2, 43);
  
      assertThat(base.isDefined(MockOptions.INT2)).isFalse();
      assertThat(derived.isDefined(MockOptions.INT2)).isTrue();
      assertThat(derived.getInt(MockOptions.INT2)).isEqualTo(43);
    }
  
    @Test
    public void should_create_derived_profile_overriding_option() {
      OptionsMap source = new OptionsMap();
      source.put(MockTypedOptions.INT1, 42);
      DriverConfig config = DriverConfigLoader.fromMap(source).getInitialConfig();
      DriverExecutionProfile base = config.getDefaultProfile();
      DriverExecutionProfile derived = base.withInt(MockOptions.INT1, 43);
  
      assertThat(base.getInt(MockOptions.INT1)).isEqualTo(42);
      assertThat(derived.getInt(MockOptions.INT1)).isEqualTo(43);
    }
  
    @Test
    public void should_create_derived_profile_unsetting_option() {
      OptionsMap source = new OptionsMap();
      source.put(MockTypedOptions.INT1, 42);
      source.put(MockTypedOptions.INT2, 43);
      DriverConfig config = DriverConfigLoader.fromMap(source).getInitialConfig();
      DriverExecutionProfile base = config.getDefaultProfile();
      DriverExecutionProfile derived = base.without(MockOptions.INT2);
  
      assertThat(base.getInt(MockOptions.INT2)).isEqualTo(43);
      assertThat(derived.isDefined(MockOptions.INT2)).isFalse();
    }
  }
  