/*
    * 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.commons.configuration2;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.Iterator;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  public class TestNullJNDIEnvironmentValues {
      private JNDIConfiguration conf;
  
      @BeforeEach
      public void setUp() throws Exception {
          System.setProperty("java.naming.factory.initial", TestJNDIConfiguration.CONTEXT_FACTORY);
  
          conf = new JNDIConfiguration();
          conf.setThrowExceptionOnMissing(false);
      }
  
      @Test
      public void testClearProperty() {
          assertNotNull(conf.getShort("test.short", null));
          conf.clearProperty("test.short");
          assertNull(conf.getShort("test.short", null));
      }
  
      @Test
      public void testContainsKey() throws Exception {
          assertTrue(conf.containsKey("test.key"));
          assertFalse(conf.containsKey("test.imaginarykey"));
      }
  
      @Test
      public void testGetKeys() throws Exception {
          boolean found = false;
          final Iterator<String> it = conf.getKeys();
  
          assertTrue(it.hasNext());
  
          while (it.hasNext() && !found) {
              found = "test.boolean".equals(it.next());
          }
  
          assertTrue(found);
      }
  
      @Test
      public void testGetKeysWithExistingPrefix() {
          // test for an existing prefix
          final Iterator<String> it = conf.getKeys("test");
          boolean found = false;
          while (it.hasNext() && !found) {
              found = "test.boolean".equals(it.next());
          }
  
          assertTrue(found);
      }
  
      @Test
      public void testGetKeysWithKeyAsPrefix() {
          // test for a prefix matching exactly the key of a property
          final Iterator<String> it = conf.getKeys("test.boolean");
          boolean found = false;
          while (it.hasNext() && !found) {
              found = "test.boolean".equals(it.next());
          }
  
          assertTrue(found);
      }
  
      @Test
      public void testGetKeysWithUnknownPrefix() {
          // test for a unknown prefix
          final Iterator<String> it = conf.getKeys("foo.bar");
          assertFalse(it.hasNext());
      }
  
     @Test
     public void testGetMissingKey() throws Exception {
         assertNull(conf.getString("test.imaginarykey"));
     }
 
     @Test
     public void testGetMissingKeyWithDefault() throws Exception {
         final String result = conf.getString("test.imaginarykey", "bob");
         assertEquals("bob", result);
     }
 
     @Test
     public void testIsEmpty() {
         assertFalse(conf.isEmpty());
     }
 
     @Test
     public void testMoreGets() throws Exception {
         final String s = conf.getString("test.key");
         assertEquals("jndivalue", s);
         assertEquals("jndivalue2", conf.getString("test.key2"));
         assertEquals(1, conf.getShort("test.short"));
     }
 
     @Test
     public void testSimpleGet() throws Exception {
         final String s = conf.getString("test.key");
         assertEquals("jndivalue", s);
     }
 
     @Test
     public void testThrowExceptionOnMissing() {
         assertFalse(conf.isThrowExceptionOnMissing());
     }
 }