package org.apache.lucene.analysis.util;
/**
* 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.
*/
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.Iterator;
import org.apache.lucene.analysis.util.CharArraySet;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util.Version;
public class TestCharArraySet extends LuceneTestCase {
static final String[] TEST_STOP_WORDS = {
"a", "an", "and", "are", "as", "at", "be", "but", "by",
"for", "if", "in", "into", "is", "it",
"no", "not", "of", "on", "or", "such",
"that", "the", "their", "then", "there", "these",
"they", "this", "to", "was", "will", "with"
};
public void testRehash() throws Exception {
CharArraySet cas = new CharArraySet(TEST_VERSION_CURRENT, 0, true);
for(int i=0;i<TEST_STOP_WORDS.length;i++)
cas.add(TEST_STOP_WORDS[i]);
assertEquals(TEST_STOP_WORDS.length, cas.size());
for(int i=0;i<TEST_STOP_WORDS.length;i++)
assertTrue(cas.contains(TEST_STOP_WORDS[i]));
}
public void testNonZeroOffset() {
String[] words={"Hello","World","this","is","a","test"};
char[] findme="xthisy".toCharArray();
CharArraySet set=new CharArraySet(TEST_VERSION_CURRENT, 10,true);
set.addAll(Arrays.asList(words));
assertTrue(set.contains(findme, 1, 4));
assertTrue(set.contains(new String(findme,1,4)));
// test unmodifiable
set = CharArraySet.unmodifiableSet(set);
assertTrue(set.contains(findme, 1, 4));
assertTrue(set.contains(new String(findme,1,4)));
}
public void testObjectContains() {
CharArraySet set = new CharArraySet(TEST_VERSION_CURRENT, 10, true);
Integer val = Integer.valueOf(1);
set.add(val);
assertTrue(set.contains(val));
assertTrue(set.contains(new Integer(1))); // another integer
assertTrue(set.contains("1"));
assertTrue(set.contains(new char[]{'1'}));
// test unmodifiable
set = CharArraySet.unmodifiableSet(set);
assertTrue(set.contains(val));
assertTrue(set.contains(new Integer(1))); // another integer
assertTrue(set.contains("1"));
assertTrue(set.contains(new char[]{'1'}));
}
public void testClear(){
CharArraySet set=new CharArraySet(TEST_VERSION_CURRENT, 10,true);
set.addAll(Arrays.asList(TEST_STOP_WORDS));
assertEquals("Not all words added", TEST_STOP_WORDS.length, set.size());
set.clear();
assertEquals("not empty", 0, set.size());
for(int i=0;i<TEST_STOP_WORDS.length;i++)
assertFalse(set.contains(TEST_STOP_WORDS[i]));
set.addAll(Arrays.asList(TEST_STOP_WORDS));
assertEquals("Not all words added", TEST_STOP_WORDS.length, set.size());
for(int i=0;i<TEST_STOP_WORDS.length;i++)
assertTrue(set.contains(TEST_STOP_WORDS[i]));
}
public void testModifyOnUnmodifiable(){
CharArraySet set=new CharArraySet(TEST_VERSION_CURRENT, 10, true);
set.addAll(Arrays.asList(TEST_STOP_WORDS));
final int size = set.size();
set = CharArraySet.unmodifiableSet(set);
assertEquals("Set size changed due to unmodifiableSet call" , size, set.size());
String NOT_IN_SET = "SirGallahad";
assertFalse("Test String already exists in set", set.contains(NOT_IN_SET));
try{
set.add(NOT_IN_SET.toCharArray());
fail("Modified unmodifiable set");
}catch (UnsupportedOperationException e) {
// expected
assertFalse("Test String has been added to unmodifiable set", set.contains(NOT_IN_SET));
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try{
set.add(NOT_IN_SET);
fail("Modified unmodifiable set");
}catch (UnsupportedOperationException e) {
// expected
assertFalse("Test String has been added to unmodifiable set", set.contains(NOT_IN_SET));
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try{
set.add(new StringBuilder(NOT_IN_SET));
fail("Modified unmodifiable set");
}catch (UnsupportedOperationException e) {
// expected
assertFalse("Test String has been added to unmodifiable set", set.contains(NOT_IN_SET));
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try{
set.clear();
fail("Modified unmodifiable set");
}catch (UnsupportedOperationException e) {
// expected
assertFalse("Changed unmodifiable set", set.contains(NOT_IN_SET));
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try{
set.add((Object) NOT_IN_SET);
fail("Modified unmodifiable set");
}catch (UnsupportedOperationException e) {
// expected
assertFalse("Test String has been added to unmodifiable set", set.contains(NOT_IN_SET));
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
// This test was changed in 3.1, as a contains() call on the given Collection using the "correct" iterator's
// current key (now a char[]) on a Set<String> would not hit any element of the CAS and therefor never call
// remove() on the iterator
try{
set.removeAll(new CharArraySet(TEST_VERSION_CURRENT, Arrays.asList(TEST_STOP_WORDS), true));
fail("Modified unmodifiable set");
}catch (UnsupportedOperationException e) {
// expected
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try{
set.retainAll(new CharArraySet(TEST_VERSION_CURRENT, Arrays.asList(NOT_IN_SET), true));
fail("Modified unmodifiable set");
}catch (UnsupportedOperationException e) {
// expected
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try{
set.addAll(Arrays.asList(new String[]{NOT_IN_SET}));
fail("Modified unmodifiable set");
}catch (UnsupportedOperationException e) {
// expected
assertFalse("Test String has been added to unmodifiable set", set.contains(NOT_IN_SET));
}
for (int i = 0; i < TEST_STOP_WORDS.length; i++) {
assertTrue(set.contains(TEST_STOP_WORDS[i]));
}
}
public void testUnmodifiableSet(){
CharArraySet set = new CharArraySet(TEST_VERSION_CURRENT, 10,true);
set.addAll(Arrays.asList(TEST_STOP_WORDS));
set.add(Integer.valueOf(1));
final int size = set.size();
set = CharArraySet.unmodifiableSet(set);
assertEquals("Set size changed due to unmodifiableSet call" , size, set.size());
for (String stopword : TEST_STOP_WORDS) {
assertTrue(set.contains(stopword));
}
assertTrue(set.contains(Integer.valueOf(1)));
assertTrue(set.contains("1"));
assertTrue(set.contains(new char[]{'1'}));
try{
CharArraySet.unmodifiableSet(null);
fail("can not make null unmodifiable");
}catch (NullPointerException e) {
// expected
}
}
public void testSupplementaryChars() {
String missing = "Term %s is missing in the set";
String falsePos = "Term %s is in the set but shouldn't";
// for reference see
// http://unicode.org/cldr/utility/list-unicodeset.jsp?a=[[%3ACase_Sensitive%3DTrue%3A]%26[^[\u0000-\uFFFF]]]&esc=on
String[] upperArr = new String[] {"Abc\ud801\udc1c",
"\ud801\udc1c\ud801\udc1cCDE", "A\ud801\udc1cB"};
String[] lowerArr = new String[] {"abc\ud801\udc44",
"\ud801\udc44\ud801\udc44cde", "a\ud801\udc44b"};
CharArraySet set = new CharArraySet(TEST_VERSION_CURRENT, Arrays.asList(TEST_STOP_WORDS), true);
for (String upper : upperArr) {
set.add(upper);
}
for (int i = 0; i < upperArr.length; i++) {
assertTrue(String.format(missing, upperArr[i]), set.contains(upperArr[i]));
assertTrue(String.format(missing, lowerArr[i]), set.contains(lowerArr[i]));
}
set = new CharArraySet(TEST_VERSION_CURRENT, Arrays.asList(TEST_STOP_WORDS), false);
for (String upper : upperArr) {
set.add(upper);
}
for (int i = 0; i < upperArr.length; i++) {
assertTrue(String.format(missing, upperArr[i]), set.contains(upperArr[i]));
assertFalse(String.format(falsePos, lowerArr[i]), set.contains(lowerArr[i]));
}
}
public void testSingleHighSurrogate() {
String missing = "Term %s is missing in the set";
String falsePos = "Term %s is in the set but shouldn't";
String[] upperArr = new String[] { "ABC\uD800", "ABC\uD800EfG",
"\uD800EfG", "\uD800\ud801\udc1cB" };
String[] lowerArr = new String[] { "abc\uD800", "abc\uD800efg",
"\uD800efg", "\uD800\ud801\udc44b" };
CharArraySet set = new CharArraySet(TEST_VERSION_CURRENT, Arrays
.asList(TEST_STOP_WORDS), true);
for (String upper : upperArr) {
set.add(upper);
}
for (int i = 0; i < upperArr.length; i++) {
assertTrue(String.format(missing, upperArr[i]), set.contains(upperArr[i]));
assertTrue(String.format(missing, lowerArr[i]), set.contains(lowerArr[i]));
}
set = new CharArraySet(TEST_VERSION_CURRENT, Arrays.asList(TEST_STOP_WORDS),
false);
for (String upper : upperArr) {
set.add(upper);
}
for (int i = 0; i < upperArr.length; i++) {
assertTrue(String.format(missing, upperArr[i]), set.contains(upperArr[i]));
assertFalse(String.format(falsePos, upperArr[i]), set
.contains(lowerArr[i]));
}
}
/**
* @deprecated remove this test when lucene 3.0 "broken unicode 4" support is
* no longer needed.
*/
@Deprecated
public void testSupplementaryCharsBWCompat() {
String missing = "Term %s is missing in the set";
String falsePos = "Term %s is in the set but shouldn't";
// for reference see
// http://unicode.org/cldr/utility/list-unicodeset.jsp?a=[[%3ACase_Sensitive%3DTrue%3A]%26[^[\u0000-\uFFFF]]]&esc=on
String[] upperArr = new String[] {"Abc\ud801\udc1c",
"\ud801\udc1c\ud801\udc1cCDE", "A\ud801\udc1cB"};
String[] lowerArr = new String[] {"abc\ud801\udc44",
"\ud801\udc44\ud801\udc44cde", "a\ud801\udc44b"};
CharArraySet set = new CharArraySet(Version.LUCENE_30, Arrays.asList(TEST_STOP_WORDS), true);
for (String upper : upperArr) {
set.add(upper);
}
for (int i = 0; i < upperArr.length; i++) {
assertTrue(String.format(missing, upperArr[i]), set.contains(upperArr[i]));
assertFalse(String.format(falsePos, lowerArr[i]), set.contains(lowerArr[i]));
}
set = new CharArraySet(Version.LUCENE_30, Arrays.asList(TEST_STOP_WORDS), false);
for (String upper : upperArr) {
set.add(upper);
}
for (int i = 0; i < upperArr.length; i++) {
assertTrue(String.format(missing, upperArr[i]), set.contains(upperArr[i]));
assertFalse(String.format(falsePos, lowerArr[i]), set.contains(lowerArr[i]));
}
}
/**
* @deprecated remove this test when lucene 3.0 "broken unicode 4" support is
* no longer needed.
*/
@Deprecated
public void testSingleHighSurrogateBWComapt() {
String missing = "Term %s is missing in the set";
String falsePos = "Term %s is in the set but shouldn't";
String[] upperArr = new String[] { "ABC\uD800", "ABC\uD800EfG",
"\uD800EfG", "\uD800\ud801\udc1cB" };
String[] lowerArr = new String[] { "abc\uD800", "abc\uD800efg",
"\uD800efg", "\uD800\ud801\udc44b" };
CharArraySet set = new CharArraySet(Version.LUCENE_30, Arrays
.asList(TEST_STOP_WORDS), true);
for (String upper : upperArr) {
set.add(upper);
}
for (int i = 0; i < upperArr.length; i++) {
assertTrue(String.format(missing, upperArr[i]), set.contains(upperArr[i]));
if (i == lowerArr.length - 1)
assertFalse(String.format(falsePos, lowerArr[i]), set
.contains(lowerArr[i]));
else
assertTrue(String.format(missing, lowerArr[i]), set
.contains(lowerArr[i]));
}
set = new CharArraySet(Version.LUCENE_30, Arrays.asList(TEST_STOP_WORDS),
false);
for (String upper : upperArr) {
set.add(upper);
}
for (int i = 0; i < upperArr.length; i++) {
assertTrue(String.format(missing, upperArr[i]), set.contains(upperArr[i]));
assertFalse(String.format(falsePos, lowerArr[i]), set
.contains(lowerArr[i]));
}
}
@SuppressWarnings("deprecated")
public void testCopyCharArraySetBWCompat() {
CharArraySet setIngoreCase = new CharArraySet(TEST_VERSION_CURRENT, 10, true);
CharArraySet setCaseSensitive = new CharArraySet(TEST_VERSION_CURRENT, 10, false);
List<String> stopwords = Arrays.asList(TEST_STOP_WORDS);
List<String> stopwordsUpper = new ArrayList<String>();
for (String string : stopwords) {
stopwordsUpper.add(string.toUpperCase());
}
setIngoreCase.addAll(Arrays.asList(TEST_STOP_WORDS));
setIngoreCase.add(Integer.valueOf(1));
setCaseSensitive.addAll(Arrays.asList(TEST_STOP_WORDS));
setCaseSensitive.add(Integer.valueOf(1));
// This should use the deprecated methods, because it checks a bw compatibility.
CharArraySet copy = CharArraySet.copy(setIngoreCase);
CharArraySet copyCaseSens = CharArraySet.copy(setCaseSensitive);
assertEquals(setIngoreCase.size(), copy.size());
assertEquals(setCaseSensitive.size(), copy.size());
assertTrue(copy.containsAll(stopwords));
assertTrue(copy.containsAll(stopwordsUpper));
assertTrue(copyCaseSens.containsAll(stopwords));
for (String string : stopwordsUpper) {
assertFalse(copyCaseSens.contains(string));
}
// test adding terms to the copy
List<String> newWords = new ArrayList<String>();
for (String string : stopwords) {
newWords.add(string+"_1");
}
copy.addAll(newWords);
assertTrue(copy.containsAll(stopwords));
assertTrue(copy.containsAll(stopwordsUpper));
assertTrue(copy.containsAll(newWords));
// new added terms are not in the source set
for (String string : newWords) {
assertFalse(setIngoreCase.contains(string));
assertFalse(setCaseSensitive.contains(string));
}
}
/**
* Test the static #copy() function with a CharArraySet as a source
*/
public void testCopyCharArraySet() {
CharArraySet setIngoreCase = new CharArraySet(TEST_VERSION_CURRENT, 10, true);
CharArraySet setCaseSensitive = new CharArraySet(TEST_VERSION_CURRENT, 10, false);
List<String> stopwords = Arrays.asList(TEST_STOP_WORDS);
List<String> stopwordsUpper = new ArrayList<String>();
for (String string : stopwords) {
stopwordsUpper.add(string.toUpperCase());
}
setIngoreCase.addAll(Arrays.asList(TEST_STOP_WORDS));
setIngoreCase.add(Integer.valueOf(1));
setCaseSensitive.addAll(Arrays.asList(TEST_STOP_WORDS));
setCaseSensitive.add(Integer.valueOf(1));
CharArraySet copy = CharArraySet.copy(TEST_VERSION_CURRENT, setIngoreCase);
CharArraySet copyCaseSens = CharArraySet.copy(TEST_VERSION_CURRENT, setCaseSensitive);
assertEquals(setIngoreCase.size(), copy.size());
assertEquals(setCaseSensitive.size(), copy.size());
assertTrue(copy.containsAll(stopwords));
assertTrue(copy.containsAll(stopwordsUpper));
assertTrue(copyCaseSens.containsAll(stopwords));
for (String string : stopwordsUpper) {
assertFalse(copyCaseSens.contains(string));
}
// test adding terms to the copy
List<String> newWords = new ArrayList<String>();
for (String string : stopwords) {
newWords.add(string+"_1");
}
copy.addAll(newWords);
assertTrue(copy.containsAll(stopwords));
assertTrue(copy.containsAll(stopwordsUpper));
assertTrue(copy.containsAll(newWords));
// new added terms are not in the source set
for (String string : newWords) {
assertFalse(setIngoreCase.contains(string));
assertFalse(setCaseSensitive.contains(string));
}
}
/**
* Test the static #copy() function with a JDK {@link Set} as a source
*/
public void testCopyJDKSet() {
Set<String> set = new HashSet<String>();
List<String> stopwords = Arrays.asList(TEST_STOP_WORDS);
List<String> stopwordsUpper = new ArrayList<String>();
for (String string : stopwords) {
stopwordsUpper.add(string.toUpperCase());
}
set.addAll(Arrays.asList(TEST_STOP_WORDS));
CharArraySet copy = CharArraySet.copy(TEST_VERSION_CURRENT, set);
assertEquals(set.size(), copy.size());
assertEquals(set.size(), copy.size());
assertTrue(copy.containsAll(stopwords));
for (String string : stopwordsUpper) {
assertFalse(copy.contains(string));
}
List<String> newWords = new ArrayList<String>();
for (String string : stopwords) {
newWords.add(string+"_1");
}
copy.addAll(newWords);
assertTrue(copy.containsAll(stopwords));
assertTrue(copy.containsAll(newWords));
// new added terms are not in the source set
for (String string : newWords) {
assertFalse(set.contains(string));
}
}
/**
* Tests a special case of {@link CharArraySet#copy(Version, Set)} where the
* set to copy is the {@link CharArraySet#EMPTY_SET}
*/
public void testCopyEmptySet() {
assertSame(CharArraySet.EMPTY_SET,
CharArraySet.copy(TEST_VERSION_CURRENT, CharArraySet.EMPTY_SET));
}
/**
* Smoketests the static empty set
*/
public void testEmptySet() {
assertEquals(0, CharArraySet.EMPTY_SET.size());
assertTrue(CharArraySet.EMPTY_SET.isEmpty());
for (String stopword : TEST_STOP_WORDS) {
assertFalse(CharArraySet.EMPTY_SET.contains(stopword));
}
assertFalse(CharArraySet.EMPTY_SET.contains("foo"));
assertFalse(CharArraySet.EMPTY_SET.contains((Object) "foo"));
assertFalse(CharArraySet.EMPTY_SET.contains("foo".toCharArray()));
assertFalse(CharArraySet.EMPTY_SET.contains("foo".toCharArray(),0,3));
}
/**
* Test for NPE
*/
public void testContainsWithNull() {
CharArraySet set = new CharArraySet(TEST_VERSION_CURRENT, 1, true);
try {
set.contains((char[]) null, 0, 10);
fail("null value must raise NPE");
} catch (NullPointerException e) {}
try {
set.contains((CharSequence) null);
fail("null value must raise NPE");
} catch (NullPointerException e) {}
try {
set.contains((Object) null);
fail("null value must raise NPE");
} catch (NullPointerException e) {}
}
@Deprecated @SuppressWarnings("unchecked")
public void testIterator() {
HashSet<String> hset = new HashSet<String>();
hset.addAll(Arrays.asList(TEST_STOP_WORDS));
assertTrue("in 3.0 version, iterator should be CharArraySetIterator",
((Iterator) CharArraySet.copy(Version.LUCENE_30, hset).iterator()) instanceof CharArraySet.CharArraySetIterator);
CharArraySet set = CharArraySet.copy(TEST_VERSION_CURRENT, hset);
assertFalse("in current version, iterator should not be CharArraySetIterator",
((Iterator) set.iterator()) instanceof CharArraySet.CharArraySetIterator);
Iterator<String> it = set.stringIterator();
assertTrue(it instanceof CharArraySet.CharArraySetIterator);
while (it.hasNext()) {
// as the set returns String instances, this must work:
assertTrue(hset.contains(it.next()));
try {
it.remove();
fail("remove() should not work on CharArraySetIterator");
} catch (UnsupportedOperationException uoe) {
// pass
}
}
}
public void testToString() {
CharArraySet set = CharArraySet.copy(TEST_VERSION_CURRENT, Collections.singleton("test"));
assertEquals("[test]", set.toString());
set.add("test2");
assertTrue(set.toString().contains(", "));
set = CharArraySet.copy(Version.LUCENE_30, Collections.singleton("test"));
assertEquals("[test]", set.toString());
set.add("test2");
assertTrue(set.toString().contains(", "));
}
}