    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17
    18  package org.apache.commons.configuration;
    19
    20  import java.io.File;
    21  import java.util.ArrayList;
    22  import java.util.HashSet;
    23  import java.util.Iterator;
    24  import java.util.List;
    25  import java.util.NoSuchElementException;
    26  import java.util.Set;
    27
    28  import junit.framework.TestCase;
    29
    30  /***
    31   * Test case for the {@link SubsetConfiguration} class.
    32   *
    33   * @author Emmanuel Bourg
    34   * @version $Revision: 439648 $, $Date: 2006-09-02 22:42:10 +0200 (Sa, 02 Sep 2006) $
    35   */
    36  public class TestSubsetConfiguration extends TestCase
    37  {
    38      static final String TEST_DIR = "conf";
    39      static final String TEST_FILE = "testDigesterConfiguration2.xml";
    40
    41      public void testGetProperty()
    42      {
    43          Configuration conf = new BaseConfiguration();
    44          conf.setProperty("test.key1", "value1");
    45          conf.setProperty("testing.key2", "value1");
    46
    47          Configuration subset = new SubsetConfiguration(conf, "test", ".");
    48          assertFalse("the subset is empty", subset.isEmpty());
    49          assertTrue("'key1' not found in the subset", subset.containsKey("key1"));
    50          assertFalse("'ng.key2' found in the subset", subset.containsKey("ng.key2"));
    51      }
    52
    53      public void testSetProperty()
    54      {
    55          Configuration conf = new BaseConfiguration();
    56          Configuration subset = new SubsetConfiguration(conf, "test", ".");
    57
    58          // set a property in the subset and check the parent
    59          subset.setProperty("key1", "value1");
    60          assertEquals("key1 in the subset configuration", "value1", subset.getProperty("key1"));
    61          assertEquals("test.key1 in the parent configuration", "value1", conf.getProperty("test.key1"));
    62
    63          // set a property in the parent and check in the subset
    64          conf.setProperty("test.key2", "value2");
    65          assertEquals("test.key2 in the parent configuration", "value2", conf.getProperty("test.key2"));
    66          assertEquals("key2 in the subset configuration", "value2", subset.getProperty("key2"));
    67      }
    68
    69      public void testGetParentKey()
    70      {
    71          // subset with delimiter
    72          SubsetConfiguration subset = new SubsetConfiguration(null, "prefix", ".");
    73          assertEquals("parent key for \"key\"", "prefix.key", subset.getParentKey("key"));
    74          assertEquals("parent key for \"\"", "prefix", subset.getParentKey(""));
    75
    76          // subset without delimiter
    77          subset = new SubsetConfiguration(null, "prefix", null);
    78          assertEquals("parent key for \"key\"", "prefixkey", subset.getParentKey("key"));
    79          assertEquals("parent key for \"\"", "prefix", subset.getParentKey(""));
    80      }
    81
    82      public void testGetChildKey()
    83      {
    84          // subset with delimiter
    85          SubsetConfiguration subset = new SubsetConfiguration(null, "prefix", ".");
    86          assertEquals("parent key for \"prefixkey\"", "key", subset.getChildKey("prefix.key"));
    87          assertEquals("parent key for \"prefix\"", "", subset.getChildKey("prefix"));
    88
    89          // subset without delimiter
    90          subset = new SubsetConfiguration(null, "prefix", null);
    91          assertEquals("parent key for \"prefixkey\"", "key", subset.getChildKey("prefixkey"));
    92          assertEquals("parent key for \"prefix\"", "", subset.getChildKey("prefix"));
    93      }
    94
    95      public void testGetKeys()
    96      {
    97          Configuration conf = new BaseConfiguration();
    98          conf.setProperty("test", "value0");
    99          conf.setProperty("test.key1", "value1");
    100         conf.setProperty("testing.key2", "value1");
    101
    102         Configuration subset = new SubsetConfiguration(conf, "test", ".");
    103
    104         Iterator it = subset.getKeys();
    105         assertEquals("1st key", "", it.next());
    106         assertEquals("2nd key", "key1", it.next());
    107         assertFalse("too many elements", it.hasNext());
    108     }
    109
    110     public void testGetKeysWithPrefix()
    111     {
    112         Configuration conf = new BaseConfiguration();
    113         conf.setProperty("test.abc", "value0");
    114         conf.setProperty("test.abc.key1", "value1");
    115         conf.setProperty("test.abcdef.key2", "value1");
    116
    117         Configuration subset = new SubsetConfiguration(conf, "test", ".");
    118
    119         Iterator it = subset.getKeys("abc");
    120         assertEquals("1st key", "abc", it.next());
    121         assertEquals("2nd key", "abc.key1", it.next());
    122         assertFalse("too many elements", it.hasNext());
    123     }
    124
    125     public void testGetList()
    126     {
    127         Configuration conf = new BaseConfiguration();
    128         conf.setProperty("test.abc", "value0,value1");
    129         conf.addProperty("test.abc", "value3");
    130
    131         Configuration subset = new SubsetConfiguration(conf, "test", ".");
    132         List list = subset.getList("abc", new ArrayList());
    133         assertEquals(3, list.size());
    134     }
    135
    136     public void testGetParent()
    137     {
    138         Configuration conf = new BaseConfiguration();
    139         SubsetConfiguration subset = new SubsetConfiguration(conf, "prefix", ".");
    140
    141         assertEquals("parent", conf, subset.getParent());
    142     }
    143
    144     public void testGetPrefix()
    145     {
    146         Configuration conf = new BaseConfiguration();
    147         SubsetConfiguration subset = new SubsetConfiguration(conf, "prefix", ".");
    148
    149         assertEquals("prefix", "prefix", subset.getPrefix());
    150     }
    151
    152     public void testSetPrefix()
    153     {
    154         Configuration conf = new BaseConfiguration();
    155         SubsetConfiguration subset = new SubsetConfiguration(conf, null, ".");
    156         subset.setPrefix("prefix");
    157
    158         assertEquals("prefix", "prefix", subset.getPrefix());
    159     }
    160
    161     public void testThrowtExceptionOnMissing()
    162     {
    163         BaseConfiguration config = new BaseConfiguration();
    164         config.setThrowExceptionOnMissing(true);
    165
    166         SubsetConfiguration subset = new SubsetConfiguration(config, "prefix");
    167
    168         try
    169         {
    170             subset.getString("foo");
    171             fail("NoSuchElementException expected");
    172         }
    173         catch (NoSuchElementException e)
    174         {
    175             // expected
    176         }
    177
    178         config.setThrowExceptionOnMissing(false);
    179         assertNull(subset.getString("foo"));
    180
    181
    182         subset.setThrowExceptionOnMissing(true);
    183         try
    184         {
    185             config.getString("foo");
    186             fail("NoSuchElementException expected");
    187         }
    188         catch (NoSuchElementException e)
    189         {
    190             // expected
    191         }
    192     }
    193
    194     public void testNested() throws Exception
    195     {
    196         ConfigurationFactory factory = new ConfigurationFactory();
    197         File src = new File(new File(TEST_DIR), TEST_FILE);
    198         factory.setConfigurationURL(src.toURL());
    199         Configuration config = factory.getConfiguration();
    200         Configuration subConf = config.subset("tables.table(0)");
    201         assertTrue(subConf.getKeys().hasNext());
    202         Configuration subSubConf = subConf.subset("fields.field(1)");
    203         Iterator itKeys = subSubConf.getKeys();
    204         Set keys = new HashSet();
    205         keys.add("name");
    206         keys.add("type");
    207         while(itKeys.hasNext())
    208         {
    209             String k = (String) itKeys.next();
    210             assertTrue(keys.contains(k));
    211             keys.remove(k);
    212         }
    213         assertTrue(keys.isEmpty());
    214     }
    215
    216     public void testClear()
    217     {
    218         Configuration config = new BaseConfiguration();
    219         config.setProperty("test.key1", "value1");
    220         config.setProperty("testing.key2", "value1");
    221
    222         Configuration subset = config.subset("test");
    223         subset.clear();
    224
    225         assertTrue("the subset is not empty", subset.isEmpty());
    226         assertFalse("the parent configuration is empty", config.isEmpty());
    227     }
    228 }