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Lucene example source code file (TestCharArrayMap.java)

This example Lucene source code file (TestCharArrayMap.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

chararraymap, chararraymap, hashmap, integer, modified, not_in_map, object, size, string, string, test, test, unsupportedoperationexception, unsupportedoperationexception, util

The Lucene TestCharArrayMap.java source code

/**
 * 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.lucene.analysis;

import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Locale;
import java.util.Map;

import org.apache.lucene.util.LuceneTestCase;

public class TestCharArrayMap extends LuceneTestCase {

  public void doRandom(int iter, boolean ignoreCase) {
    CharArrayMap<Integer> map = new CharArrayMap(TEST_VERSION_CURRENT, 1, ignoreCase);
    HashMap<String,Integer> hmap = new HashMap();

    char[] key;
    for (int i=0; i<iter; i++) {
      int len = random.nextInt(5);
      key = new char[len];
      for (int j=0; j<key.length; j++) {
        key[j] = (char)random.nextInt(127);
      }
      String keyStr = new String(key);
      String hmapKey = ignoreCase ? keyStr.toLowerCase(Locale.ENGLISH) : keyStr; 

      int val = random.nextInt();

      Object o1 = map.put(key, val);
      Object o2 = hmap.put(hmapKey,val);
      assertEquals(o1,o2);

      // add it again with the string method
      assertEquals(val, map.put(keyStr,val).intValue());

      assertEquals(val, map.get(key,0,key.length).intValue());
      assertEquals(val, map.get(key).intValue());
      assertEquals(val, map.get(keyStr).intValue());

      assertEquals(hmap.size(), map.size());
    }
  }

  public void testCharArrayMap() {
    int num = 5 * RANDOM_MULTIPLIER;
    for (int i = 0; i < num; i++) { // pump this up for more random testing
      doRandom(1000,false);
      doRandom(1000,true);      
    }
  }

  public void testMethods() {
    CharArrayMap<Integer> cm = new CharArrayMap(TEST_VERSION_CURRENT, 2, false);
    HashMap<String,Integer> hm = new HashMap();
    hm.put("foo",1);
    hm.put("bar",2);
    cm.putAll(hm);
    assertEquals(hm.size(), cm.size());
    hm.put("baz", 3);
    cm.putAll(hm);
    assertEquals(hm.size(), cm.size());

    CharArraySet cs = cm.keySet();
    int n=0;
    for (Object o : cs) {
      assertTrue(cm.containsKey(o));
      char[] co = (char[]) o;
      assertTrue(cm.containsKey(co, 0, co.length));
      n++;
    }
    assertEquals(hm.size(), n);
    assertEquals(hm.size(), cs.size());
    assertEquals(cm.size(), cs.size());
    cs.clear();
    assertEquals(0, cs.size());
    assertEquals(0, cm.size());
    try {
      cs.add("test");
      fail("keySet() allows adding new keys");
    } catch (UnsupportedOperationException ue) {
      // pass
    }
    cm.putAll(hm);
    assertEquals(hm.size(), cs.size());
    assertEquals(cm.size(), cs.size());

    Iterator<Map.Entry iter1 = cm.entrySet().iterator();
    n=0;
    while (iter1.hasNext()) {
      Map.Entry<Object,Integer> entry = iter1.next();
      Object key = entry.getKey();
      Integer val = entry.getValue();
      assertEquals(cm.get(key), val);
      entry.setValue(val*100);
      assertEquals(val*100, (int)cm.get(key));
      n++;
    }
    assertEquals(hm.size(), n);
    cm.clear();
    cm.putAll(hm);
    assertEquals(cm.size(), n);

    CharArrayMap<Integer>.EntryIterator iter2 = cm.entrySet().iterator();
    n=0;
    while (iter2.hasNext()) {
      char[] keyc = iter2.nextKey();
      Integer val = iter2.currentValue();
      assertEquals(hm.get(new String(keyc)), val);
      iter2.setValue(val*100);
      assertEquals(val*100, (int)cm.get(keyc));
      n++;
    }
    assertEquals(hm.size(), n);

    cm.entrySet().clear();
    assertEquals(0, cm.size());
    assertEquals(0, cm.entrySet().size());
    assertTrue(cm.isEmpty());
  }

  public void testModifyOnUnmodifiable(){
    CharArrayMap<Integer> map = new CharArrayMap(TEST_VERSION_CURRENT, 2, false);
    map.put("foo",1);
    map.put("bar",2);
    final int size = map.size();
    assertEquals(2, size);
    assertTrue(map.containsKey("foo"));  
    assertEquals(1, map.get("foo").intValue());  
    assertTrue(map.containsKey("bar"));  
    assertEquals(2, map.get("bar").intValue());  

    map = CharArrayMap.unmodifiableMap(map);
    assertEquals("Map size changed due to unmodifiableMap call" , size, map.size());
    String NOT_IN_MAP = "SirGallahad";
    assertFalse("Test String already exists in map", map.containsKey(NOT_IN_MAP));
    assertNull("Test String already exists in map", map.get(NOT_IN_MAP));
    
    try{
      map.put(NOT_IN_MAP.toCharArray(), 3);  
      fail("Modified unmodifiable map");
    }catch (UnsupportedOperationException e) {
      // expected
      assertFalse("Test String has been added to unmodifiable map", map.containsKey(NOT_IN_MAP));
      assertNull("Test String has been added to unmodifiable map", map.get(NOT_IN_MAP));
      assertEquals("Size of unmodifiable map has changed", size, map.size());
    }
    
    try{
      map.put(NOT_IN_MAP, 3);  
      fail("Modified unmodifiable map");
    }catch (UnsupportedOperationException e) {
      // expected
      assertFalse("Test String has been added to unmodifiable map", map.containsKey(NOT_IN_MAP));
      assertNull("Test String has been added to unmodifiable map", map.get(NOT_IN_MAP));
      assertEquals("Size of unmodifiable map has changed", size, map.size());
    }
    
    try{
      map.put(new StringBuilder(NOT_IN_MAP), 3);  
      fail("Modified unmodifiable map");
    }catch (UnsupportedOperationException e) {
      // expected
      assertFalse("Test String has been added to unmodifiable map", map.containsKey(NOT_IN_MAP));
      assertNull("Test String has been added to unmodifiable map", map.get(NOT_IN_MAP));
      assertEquals("Size of unmodifiable map has changed", size, map.size());
    }
    
    try{
      map.clear();  
      fail("Modified unmodifiable map");
    }catch (UnsupportedOperationException e) {
      // expected
      assertEquals("Size of unmodifiable map has changed", size, map.size());
    }
    
    try{
      map.entrySet().clear();  
      fail("Modified unmodifiable map");
    }catch (UnsupportedOperationException e) {
      // expected
      assertEquals("Size of unmodifiable map has changed", size, map.size());
    }
    
    try{
      map.keySet().clear();  
      fail("Modified unmodifiable map");
    }catch (UnsupportedOperationException e) {
      // expected
      assertEquals("Size of unmodifiable map has changed", size, map.size());
    }
    
    try{
      map.put((Object) NOT_IN_MAP, 3);  
      fail("Modified unmodifiable map");
    }catch (UnsupportedOperationException e) {
      // expected
      assertFalse("Test String has been added to unmodifiable map", map.containsKey(NOT_IN_MAP));
      assertNull("Test String has been added to unmodifiable map", map.get(NOT_IN_MAP));
      assertEquals("Size of unmodifiable map has changed", size, map.size());
    }
    
    try{
      map.putAll(Collections.singletonMap(NOT_IN_MAP, 3));  
      fail("Modified unmodifiable map");
    }catch (UnsupportedOperationException e) {
      // expected
      assertFalse("Test String has been added to unmodifiable map", map.containsKey(NOT_IN_MAP));
      assertNull("Test String has been added to unmodifiable map", map.get(NOT_IN_MAP));
      assertEquals("Size of unmodifiable map has changed", size, map.size());
    }
    
    assertTrue(map.containsKey("foo"));  
    assertEquals(1, map.get("foo").intValue());  
    assertTrue(map.containsKey("bar"));  
    assertEquals(2, map.get("bar").intValue());  
  }
  
  public void testToString() {
    CharArrayMap<Integer> cm = new CharArrayMap(TEST_VERSION_CURRENT, Collections.singletonMap("test",1), false);
    assertEquals("[test]",cm.keySet().toString());
    assertEquals("[1]",cm.values().toString());
    assertEquals("[test=1]",cm.entrySet().toString());
    assertEquals("{test=1}",cm.toString());
    cm.put("test2", 2);
    assertTrue(cm.keySet().toString().contains(", "));
    assertTrue(cm.values().toString().contains(", "));
    assertTrue(cm.entrySet().toString().contains(", "));
    assertTrue(cm.toString().contains(", "));
  }
}

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