/*
    * 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
    *
    *     https://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.commons.configuration2.spring;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.io.StringReader;
  import java.util.Properties;
  
  import org.apache.commons.configuration2.BaseConfiguration;
  import org.apache.commons.configuration2.Configuration;
  import org.apache.commons.configuration2.PropertiesConfiguration;
  import org.apache.commons.configuration2.PropertiesConfigurationLayout;
  import org.apache.commons.configuration2.XMLConfiguration;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.springframework.core.io.ClassPathResource;
  import org.springframework.core.io.Resource;
  
  /**
   * Spring FactoryBean test.
   */
  public class TestConfigurationPropertiesFactoryBean {
  
      private ConfigurationPropertiesFactoryBean configurationFactory;
  
      @BeforeEach
      public void setUp() {
          configurationFactory = new ConfigurationPropertiesFactoryBean();
      }
  
      @Test
      void testAfterPropertiesSet() throws Exception {
          assertThrows(IllegalArgumentException.class, configurationFactory::afterPropertiesSet);
      }
  
      @Test
      void testGetConfigurationDefensiveCopy() {
          final Configuration[] configs = {new PropertiesConfiguration(), new XMLConfiguration()};
          configurationFactory.setConfigurations(configs);
  
          final Configuration[] configsGet = configurationFactory.getConfigurations();
          configsGet[0] = null;
          assertArrayEquals(configs, configurationFactory.getConfigurations());
      }
  
      @Test
      void testGetLocationsDefensiveCopy() {
          final Resource[] locations = {new ClassPathResource("f1"), new ClassPathResource("f2")};
          configurationFactory.setLocations(locations);
  
          final Resource[] locationsGet = configurationFactory.getLocations();
          locationsGet[1] = null;
          assertArrayEquals(locations, configurationFactory.getLocations());
      }
  
      @Test
      void testGetObject() throws Exception {
          configurationFactory.setConfigurations(new BaseConfiguration());
          assertNull(configurationFactory.getObject());
          configurationFactory.afterPropertiesSet();
          assertNotNull(configurationFactory.getObject());
      }
  
      @Test
      void testInitialConfiguration() throws Exception {
          configurationFactory = new ConfigurationPropertiesFactoryBean(new BaseConfiguration());
          configurationFactory.afterPropertiesSet();
          assertNotNull(configurationFactory.getConfiguration());
      }
  
      @Test
      void testLoadResources() throws Exception {
          configurationFactory.setLocations(new ClassPathResource("testConfigurationFactoryBean.file"));
          configurationFactory.setConfigurations(new BaseConfiguration());
          configurationFactory.afterPropertiesSet();
  
          final Properties props = configurationFactory.getObject();
          assertEquals("duke", props.getProperty("java"));
      }
  
     @Test
     void testMergeConfigurations() throws Exception {
         final Configuration one = new BaseConfiguration();
         one.setProperty("foo", "bar");
         // @formatter:off
         final String properties = "## some header \n"
                 + "foo = bar1\n"
                 + "bar = foo\n";
         // @formatter:on
 
         final PropertiesConfiguration two = new PropertiesConfiguration();
         final PropertiesConfigurationLayout layout = new PropertiesConfigurationLayout();
         layout.load(two, new StringReader(properties));
 
         configurationFactory.setConfigurations(one, two);
         configurationFactory.afterPropertiesSet();
         final Properties props = configurationFactory.getObject();
         assertEquals("foo", props.getProperty("bar"));
         assertEquals("bar", props.getProperty("foo"));
     }
 
     @Test
     void testSetConfigurationsDefensiveCopy() {
         final Configuration[] configs = {new PropertiesConfiguration(), new XMLConfiguration()};
         final Configuration[] configsUpdate = configs.clone();
 
         configurationFactory.setConfigurations(configsUpdate);
         configsUpdate[0] = null;
         assertArrayEquals(configs, configurationFactory.getConfigurations());
     }
 
     @Test
     void testSetLocationsDefensiveCopy() {
         final Resource[] locations = {new ClassPathResource("f1"), new ClassPathResource("f2")};
         final Resource[] locationsUpdate = locations.clone();
 
         configurationFactory.setLocations(locationsUpdate);
         locationsUpdate[0] = new ClassPathResource("other");
         assertArrayEquals(locations, configurationFactory.getLocations());
     }
 
     @Test
     void testSetLocationsNull() {
         configurationFactory.setLocations(null);
         assertNull(configurationFactory.getLocations());
     }
 }