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Posted to commits@lucene.apache.org by rm...@apache.org on 2011/08/17 20:34:04 UTC

svn commit: r1158861 [2/2] - in /lucene/dev/trunk/modules/queryparser/src/test/org/apache/lucene/queryparser: classic/ ext/ flexible/precedence/ util/

Added: lucene/dev/trunk/modules/queryparser/src/test/org/apache/lucene/queryparser/util/QueryParserTestBase.java
URL: http://svn.apache.org/viewvc/lucene/dev/trunk/modules/queryparser/src/test/org/apache/lucene/queryparser/util/QueryParserTestBase.java?rev=1158861&view=auto
==============================================================================
--- lucene/dev/trunk/modules/queryparser/src/test/org/apache/lucene/queryparser/util/QueryParserTestBase.java (added)
+++ lucene/dev/trunk/modules/queryparser/src/test/org/apache/lucene/queryparser/util/QueryParserTestBase.java Wed Aug 17 18:34:04 2011
@@ -0,0 +1,1344 @@
+package org.apache.lucene.queryparser.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.io.IOException;
+import java.io.Reader;
+import java.text.DateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.Locale;
+
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.analysis.MockAnalyzer;
+import org.apache.lucene.analysis.MockTokenFilter;
+import org.apache.lucene.analysis.MockTokenizer;
+import org.apache.lucene.analysis.TokenFilter;
+import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.analysis.Tokenizer;
+import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
+import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
+import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
+import org.apache.lucene.document.DateTools;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+import org.apache.lucene.index.IndexWriter;
+import org.apache.lucene.index.Term;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.queryparser.classic.CharStream;
+import org.apache.lucene.queryparser.classic.ParseException;
+import org.apache.lucene.queryparser.classic.QueryParser;
+import org.apache.lucene.queryparser.classic.QueryParserTokenManager;
+import org.apache.lucene.search.*;
+import org.apache.lucene.search.BooleanClause.Occur;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.util.LuceneTestCase;
+import org.apache.lucene.util.automaton.BasicAutomata;
+import org.apache.lucene.util.automaton.CharacterRunAutomaton;
+import org.apache.lucene.util.automaton.RegExp;
+
+/**
+ * Base Test class for QueryParser subclasses
+ */
+// TODO: it would be better to refactor the parts that are specific really
+// to the core QP and subclass/use the parts that are not in the contrib QP
+public abstract class QueryParserTestBase extends LuceneTestCase {
+  
+  public static Analyzer qpAnalyzer = new QPTestAnalyzer();
+
+  public static final class QPTestFilter extends TokenFilter {
+    CharTermAttribute termAtt;
+    OffsetAttribute offsetAtt;
+        
+    /**
+     * Filter which discards the token 'stop' and which expands the
+     * token 'phrase' into 'phrase1 phrase2'
+     */
+    public QPTestFilter(TokenStream in) {
+      super(in);
+      termAtt = addAttribute(CharTermAttribute.class);
+      offsetAtt = addAttribute(OffsetAttribute.class);
+    }
+
+    boolean inPhrase = false;
+    int savedStart = 0, savedEnd = 0;
+
+    @Override
+    public boolean incrementToken() throws IOException {
+      if (inPhrase) {
+        inPhrase = false;
+        clearAttributes();
+        termAtt.append("phrase2");
+        offsetAtt.setOffset(savedStart, savedEnd);
+        return true;
+      } else
+        while (input.incrementToken()) {
+          if (termAtt.toString().equals("phrase")) {
+            inPhrase = true;
+            savedStart = offsetAtt.startOffset();
+            savedEnd = offsetAtt.endOffset();
+            termAtt.setEmpty().append("phrase1");
+            offsetAtt.setOffset(savedStart, savedEnd);
+            return true;
+          } else if (!termAtt.toString().equals("stop"))
+            return true;
+        }
+      return false;
+    }
+  }
+
+  
+  public static final class QPTestAnalyzer extends Analyzer {
+
+    /** Filters MockTokenizer with StopFilter. */
+    @Override
+    public final TokenStream tokenStream(String fieldName, Reader reader) {
+      return new QPTestFilter(new MockTokenizer(reader, MockTokenizer.SIMPLE, true));
+    }
+  }
+
+  public static class QPTestParser extends QueryParser {
+    public QPTestParser(String f, Analyzer a) {
+      super(TEST_VERSION_CURRENT, f, a);
+    }
+
+    @Override
+    protected Query getFuzzyQuery(String field, String termStr, float minSimilarity) throws ParseException {
+      throw new ParseException("Fuzzy queries not allowed");
+    }
+
+    @Override
+    protected Query getWildcardQuery(String field, String termStr) throws ParseException {
+      throw new ParseException("Wildcard queries not allowed");
+    }
+  }
+
+  private int originalMaxClauses;
+
+  @Override
+  public void setUp() throws Exception {
+    super.setUp();
+    originalMaxClauses = BooleanQuery.getMaxClauseCount();
+  }
+
+  public abstract QueryParser getParser(Analyzer a) throws Exception;
+
+  public Query getQuery(String query, Analyzer a) throws Exception {
+    return getParser(a).parse(query);
+  }
+
+  public void assertQueryEquals(String query, Analyzer a, String result)
+    throws Exception {
+    Query q = getQuery(query, a);
+    String s = q.toString("field");
+    if (!s.equals(result)) {
+      fail("Query /" + query + "/ yielded /" + s
+           + "/, expecting /" + result + "/");
+    }
+  }
+
+  public void assertQueryEquals(QueryParser qp, String field, String query, String result) 
+    throws Exception {
+    Query q = qp.parse(query);
+    String s = q.toString(field);
+    if (!s.equals(result)) {
+      fail("Query /" + query + "/ yielded /" + s
+           + "/, expecting /" + result + "/");
+    }
+  }
+  
+  public void assertEscapedQueryEquals(String query, Analyzer a, String result)
+    throws Exception {
+    String escapedQuery = QueryParser.escape(query);
+    if (!escapedQuery.equals(result)) {
+      fail("Query /" + query + "/ yielded /" + escapedQuery
+          + "/, expecting /" + result + "/");
+    }
+  }
+
+  public void assertWildcardQueryEquals(String query, boolean lowercase, String result, boolean allowLeadingWildcard)
+    throws Exception {
+    QueryParser qp = getParser(null);
+    qp.setLowercaseExpandedTerms(lowercase);
+    qp.setAllowLeadingWildcard(allowLeadingWildcard);
+    Query q = qp.parse(query);
+    String s = q.toString("field");
+    if (!s.equals(result)) {
+      fail("WildcardQuery /" + query + "/ yielded /" + s
+           + "/, expecting /" + result + "/");
+    }
+  }
+
+  public void assertWildcardQueryEquals(String query, boolean lowercase, String result)
+    throws Exception {
+    assertWildcardQueryEquals(query, lowercase, result, false);
+  }
+
+  public void assertWildcardQueryEquals(String query, String result) throws Exception {
+    QueryParser qp = getParser(null);
+    Query q = qp.parse(query);
+    String s = q.toString("field");
+    if (!s.equals(result)) {
+      fail("WildcardQuery /" + query + "/ yielded /" + s + "/, expecting /"
+          + result + "/");
+    }
+  }
+
+  public Query getQueryDOA(String query, Analyzer a)
+    throws Exception {
+    if (a == null)
+      a = new MockAnalyzer(random, MockTokenizer.SIMPLE, true);
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", a);
+    qp.setDefaultOperator(QueryParser.AND_OPERATOR);
+    return qp.parse(query);
+  }
+
+  public void assertQueryEqualsDOA(String query, Analyzer a, String result)
+    throws Exception {
+    Query q = getQueryDOA(query, a);
+    String s = q.toString("field");
+    if (!s.equals(result)) {
+      fail("Query /" + query + "/ yielded /" + s
+           + "/, expecting /" + result + "/");
+    }
+  }
+
+  public void testCJK() throws Exception {
+   // Test Ideographic Space - As wide as a CJK character cell (fullwidth)
+   // used google to translate the word "term" to japanese -> 用語
+   assertQueryEquals("term\u3000term\u3000term", null, "term\u0020term\u0020term");
+   assertQueryEquals("用語\u3000用語\u3000用語", null, "用語\u0020用語\u0020用語");
+  }
+
+  //individual CJK chars as terms, like StandardAnalyzer
+  private class SimpleCJKTokenizer extends Tokenizer {
+    private CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
+
+    public SimpleCJKTokenizer(Reader input) {
+      super(input);
+    }
+
+    @Override
+    public boolean incrementToken() throws IOException {
+      int ch = input.read();
+      if (ch < 0)
+        return false;
+      clearAttributes();
+      termAtt.setEmpty().append((char) ch);
+      return true;
+    }
+  }
+
+  private class SimpleCJKAnalyzer extends Analyzer {
+    @Override
+    public TokenStream tokenStream(String fieldName, Reader reader) {
+      return new SimpleCJKTokenizer(reader);
+    }
+  }
+
+  public void testCJKTerm() throws Exception {
+    // individual CJK chars as terms
+    SimpleCJKAnalyzer analyzer = new SimpleCJKAnalyzer(); 
+    
+    BooleanQuery expected = new BooleanQuery();
+    expected.add(new TermQuery(new Term("field", "中")), BooleanClause.Occur.SHOULD);
+    expected.add(new TermQuery(new Term("field", "国")), BooleanClause.Occur.SHOULD);
+    
+    assertEquals(expected, getQuery("中国", analyzer));
+  }
+  
+  public void testCJKBoostedTerm() throws Exception {
+    // individual CJK chars as terms
+    SimpleCJKAnalyzer analyzer = new SimpleCJKAnalyzer();
+    
+    BooleanQuery expected = new BooleanQuery();
+    expected.setBoost(0.5f);
+    expected.add(new TermQuery(new Term("field", "中")), BooleanClause.Occur.SHOULD);
+    expected.add(new TermQuery(new Term("field", "国")), BooleanClause.Occur.SHOULD);
+    
+    assertEquals(expected, getQuery("中国^0.5", analyzer));
+  }
+  
+  public void testCJKPhrase() throws Exception {
+    // individual CJK chars as terms
+    SimpleCJKAnalyzer analyzer = new SimpleCJKAnalyzer();
+    
+    PhraseQuery expected = new PhraseQuery();
+    expected.add(new Term("field", "中"));
+    expected.add(new Term("field", "国"));
+    
+    assertEquals(expected, getQuery("\"中国\"", analyzer));
+  }
+  
+  public void testCJKBoostedPhrase() throws Exception {
+    // individual CJK chars as terms
+    SimpleCJKAnalyzer analyzer = new SimpleCJKAnalyzer();
+    
+    PhraseQuery expected = new PhraseQuery();
+    expected.setBoost(0.5f);
+    expected.add(new Term("field", "中"));
+    expected.add(new Term("field", "国"));
+    
+    assertEquals(expected, getQuery("\"中国\"^0.5", analyzer));
+  }
+  
+  public void testCJKSloppyPhrase() throws Exception {
+    // individual CJK chars as terms
+    SimpleCJKAnalyzer analyzer = new SimpleCJKAnalyzer();
+    
+    PhraseQuery expected = new PhraseQuery();
+    expected.setSlop(3);
+    expected.add(new Term("field", "中"));
+    expected.add(new Term("field", "国"));
+    
+    assertEquals(expected, getQuery("\"中国\"~3", analyzer));
+  }
+  
+  public void testAutoGeneratePhraseQueriesOn() throws Exception {
+    // individual CJK chars as terms
+    SimpleCJKAnalyzer analyzer = new SimpleCJKAnalyzer(); 
+  
+    PhraseQuery expected = new PhraseQuery();
+    expected.add(new Term("field", "中"));
+    expected.add(new Term("field", "国"));
+    QueryParser parser = new QueryParser(TEST_VERSION_CURRENT, "field", analyzer);
+    parser.setAutoGeneratePhraseQueries(true);
+    assertEquals(expected, parser.parse("中国"));
+  }
+
+  public void testSimple() throws Exception {
+    assertQueryEquals("term term term", null, "term term term");
+    assertQueryEquals("türm term term", new MockAnalyzer(random), "türm term term");
+    assertQueryEquals("ümlaut", new MockAnalyzer(random), "ümlaut");
+
+    // FIXME: enhance MockAnalyzer to be able to support this
+    // it must no longer extend CharTokenizer
+    //assertQueryEquals("\"\"", new KeywordAnalyzer(), "");
+    //assertQueryEquals("foo:\"\"", new KeywordAnalyzer(), "foo:");
+
+    assertQueryEquals("a AND b", null, "+a +b");
+    assertQueryEquals("(a AND b)", null, "+a +b");
+    assertQueryEquals("c OR (a AND b)", null, "c (+a +b)");
+    assertQueryEquals("a AND NOT b", null, "+a -b");
+    assertQueryEquals("a AND -b", null, "+a -b");
+    assertQueryEquals("a AND !b", null, "+a -b");
+    assertQueryEquals("a && b", null, "+a +b");
+//    assertQueryEquals("a && ! b", null, "+a -b");
+
+    assertQueryEquals("a OR b", null, "a b");
+    assertQueryEquals("a || b", null, "a b");
+    assertQueryEquals("a OR !b", null, "a -b");
+//    assertQueryEquals("a OR ! b", null, "a -b");
+    assertQueryEquals("a OR -b", null, "a -b");
+
+    // +,-,! should be directly adjacent to operand (i.e. not separated by whitespace) to be treated as an operator
+    Analyzer a = new Analyzer() {
+      @Override
+      public TokenStream tokenStream(String fieldName, Reader reader) {
+        return new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
+      }
+    };
+    assertQueryEquals("a - b", a, "a - b");
+    assertQueryEquals("a + b", a, "a + b");
+    assertQueryEquals("a ! b", a, "a ! b");
+
+    assertQueryEquals("+term -term term", null, "+term -term term");
+    assertQueryEquals("foo:term AND field:anotherTerm", null,
+                      "+foo:term +anotherterm");
+    assertQueryEquals("term AND \"phrase phrase\"", null,
+                      "+term +\"phrase phrase\"");
+    assertQueryEquals("\"hello there\"", null, "\"hello there\"");
+    assertTrue(getQuery("a AND b", null) instanceof BooleanQuery);
+    assertTrue(getQuery("hello", null) instanceof TermQuery);
+    assertTrue(getQuery("\"hello there\"", null) instanceof PhraseQuery);
+
+    assertQueryEquals("germ term^2.0", null, "germ term^2.0");
+    assertQueryEquals("(term)^2.0", null, "term^2.0");
+    assertQueryEquals("(germ term)^2.0", null, "(germ term)^2.0");
+    assertQueryEquals("term^2.0", null, "term^2.0");
+    assertQueryEquals("term^2", null, "term^2.0");
+    assertQueryEquals("\"germ term\"^2.0", null, "\"germ term\"^2.0");
+    assertQueryEquals("\"term germ\"^2", null, "\"term germ\"^2.0");
+
+    assertQueryEquals("(foo OR bar) AND (baz OR boo)", null,
+                      "+(foo bar) +(baz boo)");
+    assertQueryEquals("((a OR b) AND NOT c) OR d", null,
+                      "(+(a b) -c) d");
+    assertQueryEquals("+(apple \"steve jobs\") -(foo bar baz)", null,
+                      "+(apple \"steve jobs\") -(foo bar baz)");
+    assertQueryEquals("+title:(dog OR cat) -author:\"bob dole\"", null,
+                      "+(title:dog title:cat) -author:\"bob dole\"");
+    
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random));
+    // make sure OR is the default:
+    assertEquals(QueryParser.OR_OPERATOR, qp.getDefaultOperator());
+    qp.setDefaultOperator(QueryParser.AND_OPERATOR);
+    assertEquals(QueryParser.AND_OPERATOR, qp.getDefaultOperator());
+    qp.setDefaultOperator(QueryParser.OR_OPERATOR);
+    assertEquals(QueryParser.OR_OPERATOR, qp.getDefaultOperator());
+  }
+
+  public void testPunct() throws Exception {
+    Analyzer a = new MockAnalyzer(random, MockTokenizer.WHITESPACE, false);
+    assertQueryEquals("a&b", a, "a&b");
+    assertQueryEquals("a&&b", a, "a&&b");
+    assertQueryEquals(".NET", a, ".NET");
+  }
+
+  public void testSlop() throws Exception {
+    assertQueryEquals("\"term germ\"~2", null, "\"term germ\"~2");
+    assertQueryEquals("\"term germ\"~2 flork", null, "\"term germ\"~2 flork");
+    assertQueryEquals("\"term\"~2", null, "term");
+    assertQueryEquals("\" \"~2 germ", null, "germ");
+    assertQueryEquals("\"term germ\"~2^2", null, "\"term germ\"~2^2.0");
+  }
+
+  public void testNumber() throws Exception {
+// The numbers go away because SimpleAnalzyer ignores them
+    assertQueryEquals("3", null, "");
+    assertQueryEquals("term 1.0 1 2", null, "term");
+    assertQueryEquals("term term1 term2", null, "term term term");
+
+    Analyzer a = new MockAnalyzer(random, MockTokenizer.WHITESPACE, true);
+    assertQueryEquals("3", a, "3");
+    assertQueryEquals("term 1.0 1 2", a, "term 1.0 1 2");
+    assertQueryEquals("term term1 term2", a, "term term1 term2");
+  }
+
+  public void testWildcard() throws Exception {
+    assertQueryEquals("term*", null, "term*");
+    assertQueryEquals("term*^2", null, "term*^2.0");
+    assertQueryEquals("term~", null, "term~2.0");
+    assertQueryEquals("term~0.7", null, "term~0.7");
+    assertQueryEquals("term~^3", null, "term~2.0^3.0");
+    assertQueryEquals("term^3~", null, "term~2.0^3.0");
+    assertQueryEquals("term*germ", null, "term*germ");
+    assertQueryEquals("term*germ^3", null, "term*germ^3.0");
+
+    assertTrue(getQuery("term*", null) instanceof PrefixQuery);
+    assertTrue(getQuery("term*^2", null) instanceof PrefixQuery);
+    assertTrue(getQuery("term~", null) instanceof FuzzyQuery);
+    assertTrue(getQuery("term~0.7", null) instanceof FuzzyQuery);
+    FuzzyQuery fq = (FuzzyQuery)getQuery("term~0.7", null);
+    assertEquals(0.7f, fq.getMinSimilarity(), 0.1f);
+    assertEquals(FuzzyQuery.defaultPrefixLength, fq.getPrefixLength());
+    fq = (FuzzyQuery)getQuery("term~", null);
+    assertEquals(2.0f, fq.getMinSimilarity(), 0.1f);
+    assertEquals(FuzzyQuery.defaultPrefixLength, fq.getPrefixLength());
+    
+    assertParseException("term~1.1"); // value > 1, throws exception
+
+    assertTrue(getQuery("term*germ", null) instanceof WildcardQuery);
+
+/* Tests to see that wild card terms are (or are not) properly
+   * lower-cased with propery parser configuration
+   */
+// First prefix queries:
+    // by default, convert to lowercase:
+    assertWildcardQueryEquals("Term*", true, "term*");
+    // explicitly set lowercase:
+    assertWildcardQueryEquals("term*", true, "term*");
+    assertWildcardQueryEquals("Term*", true, "term*");
+    assertWildcardQueryEquals("TERM*", true, "term*");
+    // explicitly disable lowercase conversion:
+    assertWildcardQueryEquals("term*", false, "term*");
+    assertWildcardQueryEquals("Term*", false, "Term*");
+    assertWildcardQueryEquals("TERM*", false, "TERM*");
+// Then 'full' wildcard queries:
+    // by default, convert to lowercase:
+    assertWildcardQueryEquals("Te?m", "te?m");
+    // explicitly set lowercase:
+    assertWildcardQueryEquals("te?m", true, "te?m");
+    assertWildcardQueryEquals("Te?m", true, "te?m");
+    assertWildcardQueryEquals("TE?M", true, "te?m");
+    assertWildcardQueryEquals("Te?m*gerM", true, "te?m*germ");
+    // explicitly disable lowercase conversion:
+    assertWildcardQueryEquals("te?m", false, "te?m");
+    assertWildcardQueryEquals("Te?m", false, "Te?m");
+    assertWildcardQueryEquals("TE?M", false, "TE?M");
+    assertWildcardQueryEquals("Te?m*gerM", false, "Te?m*gerM");
+//  Fuzzy queries:
+    assertWildcardQueryEquals("Term~", "term~2.0");
+    assertWildcardQueryEquals("Term~", true, "term~2.0");
+    assertWildcardQueryEquals("Term~", false, "Term~2.0");
+//  Range queries:
+    assertWildcardQueryEquals("[A TO C]", "[a TO c]");
+    assertWildcardQueryEquals("[A TO C]", true, "[a TO c]");
+    assertWildcardQueryEquals("[A TO C]", false, "[A TO C]");
+    // Test suffix queries: first disallow
+    try {
+      assertWildcardQueryEquals("*Term", true, "*term");
+      fail();
+    } catch(ParseException pe) {
+      // expected exception
+    }
+    try {
+      assertWildcardQueryEquals("?Term", true, "?term");
+      fail();
+    } catch(ParseException pe) {
+      // expected exception
+    }
+    // Test suffix queries: then allow
+    assertWildcardQueryEquals("*Term", true, "*term", true);
+    assertWildcardQueryEquals("?Term", true, "?term", true);
+  }
+  
+  public void testLeadingWildcardType() throws Exception {
+    QueryParser qp = getParser(null);
+    qp.setAllowLeadingWildcard(true);
+    assertEquals(WildcardQuery.class, qp.parse("t*erm*").getClass());
+    assertEquals(WildcardQuery.class, qp.parse("?term*").getClass());
+    assertEquals(WildcardQuery.class, qp.parse("*term*").getClass());
+  }
+
+  public void testQPA() throws Exception {
+    assertQueryEquals("term term^3.0 term", qpAnalyzer, "term term^3.0 term");
+    assertQueryEquals("term stop^3.0 term", qpAnalyzer, "term term");
+    
+    assertQueryEquals("term term term", qpAnalyzer, "term term term");
+    assertQueryEquals("term +stop term", qpAnalyzer, "term term");
+    assertQueryEquals("term -stop term", qpAnalyzer, "term term");
+
+    assertQueryEquals("drop AND (stop) AND roll", qpAnalyzer, "+drop +roll");
+    assertQueryEquals("term +(stop) term", qpAnalyzer, "term term");
+    assertQueryEquals("term -(stop) term", qpAnalyzer, "term term");
+    
+    assertQueryEquals("drop AND stop AND roll", qpAnalyzer, "+drop +roll");
+    assertQueryEquals("term phrase term", qpAnalyzer,
+                      "term (phrase1 phrase2) term");
+    assertQueryEquals("term AND NOT phrase term", qpAnalyzer,
+                      "+term -(phrase1 phrase2) term");
+    assertQueryEquals("stop^3", qpAnalyzer, "");
+    assertQueryEquals("stop", qpAnalyzer, "");
+    assertQueryEquals("(stop)^3", qpAnalyzer, "");
+    assertQueryEquals("((stop))^3", qpAnalyzer, "");
+    assertQueryEquals("(stop^3)", qpAnalyzer, "");
+    assertQueryEquals("((stop)^3)", qpAnalyzer, "");
+    assertQueryEquals("(stop)", qpAnalyzer, "");
+    assertQueryEquals("((stop))", qpAnalyzer, "");
+    assertTrue(getQuery("term term term", qpAnalyzer) instanceof BooleanQuery);
+    assertTrue(getQuery("term +stop", qpAnalyzer) instanceof TermQuery);
+  }
+
+  public void testRange() throws Exception {
+    assertQueryEquals("[ a TO z]", null, "[a TO z]");
+    assertQueryEquals("[ a TO z}", null, "[a TO z}");
+    assertQueryEquals("{ a TO z]", null, "{a TO z]"); 
+
+     assertEquals(MultiTermQuery.CONSTANT_SCORE_AUTO_REWRITE_DEFAULT, ((TermRangeQuery)getQuery("[ a TO z]", null)).getRewriteMethod());
+
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random, MockTokenizer.SIMPLE, true));
+    qp.setMultiTermRewriteMethod(MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE);
+    assertEquals(MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE,((TermRangeQuery)qp.parse("[ a TO z]")).getRewriteMethod());
+    
+    // test open ranges
+    assertQueryEquals("[ a TO * ]", null, "[a TO *]");
+    assertQueryEquals("[ * TO z ]", null, "[* TO z]");
+    assertQueryEquals("[ * TO * ]", null, "[* TO *]");
+    
+    // mixing exclude and include bounds
+    assertQueryEquals("{ a TO z ]", null, "{a TO z]");
+    assertQueryEquals("[ a TO z }", null, "[a TO z}");
+    assertQueryEquals("{ a TO * ]", null, "{a TO *]");
+    assertQueryEquals("[ * TO z }", null, "[* TO z}");
+    
+    assertQueryEquals("[ a TO z ]", null, "[a TO z]");
+    assertQueryEquals("{ a TO z}", null, "{a TO z}");
+    assertQueryEquals("{ a TO z }", null, "{a TO z}");
+    assertQueryEquals("{ a TO z }^2.0", null, "{a TO z}^2.0");
+    assertQueryEquals("[ a TO z] OR bar", null, "[a TO z] bar");
+    assertQueryEquals("[ a TO z] AND bar", null, "+[a TO z] +bar");
+    assertQueryEquals("( bar blar { a TO z}) ", null, "bar blar {a TO z}");
+    assertQueryEquals("gack ( bar blar { a TO z}) ", null, "gack (bar blar {a TO z})");
+
+    assertQueryEquals("[* TO Z]",null,"[* TO z]");
+    assertQueryEquals("[A TO *]",null,"[a TO *]");
+    assertQueryEquals("[* TO *]",null,"[* TO *]");
+    assertQueryEquals("[\\* TO \"*\"]",null,"[\\* TO \\*]");
+ }
+    
+  private String escapeDateString(String s) {
+    if (s.indexOf(" ") > -1) {
+      return "\"" + s + "\"";
+    } else {
+      return s;
+    }
+  }
+  
+  /** for testing DateTools support */
+  private String getDate(String s, DateTools.Resolution resolution) throws Exception {
+    DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
+    return getDate(df.parse(s), resolution);      
+  }
+  
+  /** for testing DateTools support */
+  private String getDate(Date d, DateTools.Resolution resolution) throws Exception {
+     return DateTools.dateToString(d, resolution);
+  }
+  
+  private String getLocalizedDate(int year, int month, int day) {
+    DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
+    Calendar calendar = new GregorianCalendar();
+    calendar.clear();
+    calendar.set(year, month, day);
+    calendar.set(Calendar.HOUR_OF_DAY, 23);
+    calendar.set(Calendar.MINUTE, 59);
+    calendar.set(Calendar.SECOND, 59);
+    calendar.set(Calendar.MILLISECOND, 999);
+    return df.format(calendar.getTime());
+  }
+
+  public void testDateRange() throws Exception {
+    String startDate = getLocalizedDate(2002, 1, 1);
+    String endDate = getLocalizedDate(2002, 1, 4);
+    Calendar endDateExpected = new GregorianCalendar();
+    endDateExpected.clear();
+    endDateExpected.set(2002, 1, 4, 23, 59, 59);
+    endDateExpected.set(Calendar.MILLISECOND, 999);
+    final String defaultField = "default";
+    final String monthField = "month";
+    final String hourField = "hour";
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random, MockTokenizer.SIMPLE, true));
+    
+    // set a field specific date resolution
+    qp.setDateResolution(monthField, DateTools.Resolution.MONTH);
+    
+    // set default date resolution to MILLISECOND
+    qp.setDateResolution(DateTools.Resolution.MILLISECOND);
+    
+    // set second field specific date resolution    
+    qp.setDateResolution(hourField, DateTools.Resolution.HOUR);
+
+    // for this field no field specific date resolution has been set,
+    // so verify if the default resolution is used
+    assertDateRangeQueryEquals(qp, defaultField, startDate, endDate, 
+            endDateExpected.getTime(), DateTools.Resolution.MILLISECOND);
+
+    // verify if field specific date resolutions are used for these two fields
+    assertDateRangeQueryEquals(qp, monthField, startDate, endDate, 
+            endDateExpected.getTime(), DateTools.Resolution.MONTH);
+
+    assertDateRangeQueryEquals(qp, hourField, startDate, endDate, 
+            endDateExpected.getTime(), DateTools.Resolution.HOUR);  
+  }
+  
+  public void assertDateRangeQueryEquals(QueryParser qp, String field, String startDate, String endDate, 
+                                         Date endDateInclusive, DateTools.Resolution resolution) throws Exception {
+    assertQueryEquals(qp, field, field + ":[" + escapeDateString(startDate) + " TO " + escapeDateString(endDate) + "]",
+               "[" + getDate(startDate, resolution) + " TO " + getDate(endDateInclusive, resolution) + "]");
+    assertQueryEquals(qp, field, field + ":{" + escapeDateString(startDate) + " TO " + escapeDateString(endDate) + "}",
+               "{" + getDate(startDate, resolution) + " TO " + getDate(endDate, resolution) + "}");
+  }
+
+  public void testEscaped() throws Exception {
+    Analyzer a = new MockAnalyzer(random, MockTokenizer.WHITESPACE, false);
+    
+    /*assertQueryEquals("\\[brackets", a, "\\[brackets");
+    assertQueryEquals("\\[brackets", null, "brackets");
+    assertQueryEquals("\\\\", a, "\\\\");
+    assertQueryEquals("\\+blah", a, "\\+blah");
+    assertQueryEquals("\\(blah", a, "\\(blah");
+
+    assertQueryEquals("\\-blah", a, "\\-blah");
+    assertQueryEquals("\\!blah", a, "\\!blah");
+    assertQueryEquals("\\{blah", a, "\\{blah");
+    assertQueryEquals("\\}blah", a, "\\}blah");
+    assertQueryEquals("\\:blah", a, "\\:blah");
+    assertQueryEquals("\\^blah", a, "\\^blah");
+    assertQueryEquals("\\[blah", a, "\\[blah");
+    assertQueryEquals("\\]blah", a, "\\]blah");
+    assertQueryEquals("\\\"blah", a, "\\\"blah");
+    assertQueryEquals("\\(blah", a, "\\(blah");
+    assertQueryEquals("\\)blah", a, "\\)blah");
+    assertQueryEquals("\\~blah", a, "\\~blah");
+    assertQueryEquals("\\*blah", a, "\\*blah");
+    assertQueryEquals("\\?blah", a, "\\?blah");
+    //assertQueryEquals("foo \\&\\& bar", a, "foo \\&\\& bar");
+    //assertQueryEquals("foo \\|| bar", a, "foo \\|| bar");
+    //assertQueryEquals("foo \\AND bar", a, "foo \\AND bar");*/
+
+    assertQueryEquals("\\a", a, "a");
+    
+    assertQueryEquals("a\\-b:c", a, "a-b:c");
+    assertQueryEquals("a\\+b:c", a, "a+b:c");
+    assertQueryEquals("a\\:b:c", a, "a:b:c");
+    assertQueryEquals("a\\\\b:c", a, "a\\b:c");
+
+    assertQueryEquals("a:b\\-c", a, "a:b-c");
+    assertQueryEquals("a:b\\+c", a, "a:b+c");
+    assertQueryEquals("a:b\\:c", a, "a:b:c");
+    assertQueryEquals("a:b\\\\c", a, "a:b\\c");
+
+    assertQueryEquals("a:b\\-c*", a, "a:b-c*");
+    assertQueryEquals("a:b\\+c*", a, "a:b+c*");
+    assertQueryEquals("a:b\\:c*", a, "a:b:c*");
+
+    assertQueryEquals("a:b\\\\c*", a, "a:b\\c*");
+
+    assertQueryEquals("a:b\\-?c", a, "a:b\\-?c");
+    assertQueryEquals("a:b\\+?c", a, "a:b\\+?c");
+    assertQueryEquals("a:b\\:?c", a, "a:b\\:?c");
+
+    assertQueryEquals("a:b\\\\?c", a, "a:b\\\\?c");
+
+    assertQueryEquals("a:b\\-c~", a, "a:b-c~2.0");
+    assertQueryEquals("a:b\\+c~", a, "a:b+c~2.0");
+    assertQueryEquals("a:b\\:c~", a, "a:b:c~2.0");
+    assertQueryEquals("a:b\\\\c~", a, "a:b\\c~2.0");
+
+    assertQueryEquals("[ a\\- TO a\\+ ]", null, "[a- TO a+]");
+    assertQueryEquals("[ a\\: TO a\\~ ]", null, "[a: TO a~]");
+    assertQueryEquals("[ a\\\\ TO a\\* ]", null, "[a\\ TO a*]");
+
+    assertQueryEquals("[\"c\\:\\\\temp\\\\\\~foo0.txt\" TO \"c\\:\\\\temp\\\\\\~foo9.txt\"]", a, 
+                      "[c:\\temp\\~foo0.txt TO c:\\temp\\~foo9.txt]");
+    
+    assertQueryEquals("a\\\\\\+b", a, "a\\+b");
+    
+    assertQueryEquals("a \\\"b c\\\" d", a, "a \"b c\" d");
+    assertQueryEquals("\"a \\\"b c\\\" d\"", a, "\"a \"b c\" d\"");
+    assertQueryEquals("\"a \\+b c d\"", a, "\"a +b c d\"");
+    
+    assertQueryEquals("c\\:\\\\temp\\\\\\~foo.txt", a, "c:\\temp\\~foo.txt");
+    
+    assertParseException("XY\\"); // there must be a character after the escape char
+    
+    // test unicode escaping
+    assertQueryEquals("a\\u0062c", a, "abc");
+    assertQueryEquals("XY\\u005a", a, "XYZ");
+    assertQueryEquals("XY\\u005A", a, "XYZ");
+    assertQueryEquals("\"a \\\\\\u0028\\u0062\\\" c\"", a, "\"a \\(b\" c\"");
+    
+    assertParseException("XY\\u005G");  // test non-hex character in escaped unicode sequence
+    assertParseException("XY\\u005");   // test incomplete escaped unicode sequence
+    
+    // Tests bug LUCENE-800
+    assertQueryEquals("(item:\\\\ item:ABCD\\\\)", a, "item:\\ item:ABCD\\");
+    assertParseException("(item:\\\\ item:ABCD\\\\))"); // unmatched closing paranthesis 
+    assertQueryEquals("\\*", a, "*");
+    assertQueryEquals("\\\\", a, "\\");  // escaped backslash
+    
+    assertParseException("\\"); // a backslash must always be escaped
+    
+    // LUCENE-1189
+    assertQueryEquals("(\"a\\\\\") or (\"b\")", a ,"a\\ or b");
+  }
+
+  public void testQueryStringEscaping() throws Exception {
+    Analyzer a = new MockAnalyzer(random, MockTokenizer.WHITESPACE, false);
+
+    assertEscapedQueryEquals("a-b:c", a, "a\\-b\\:c");
+    assertEscapedQueryEquals("a+b:c", a, "a\\+b\\:c");
+    assertEscapedQueryEquals("a:b:c", a, "a\\:b\\:c");
+    assertEscapedQueryEquals("a\\b:c", a, "a\\\\b\\:c");
+
+    assertEscapedQueryEquals("a:b-c", a, "a\\:b\\-c");
+    assertEscapedQueryEquals("a:b+c", a, "a\\:b\\+c");
+    assertEscapedQueryEquals("a:b:c", a, "a\\:b\\:c");
+    assertEscapedQueryEquals("a:b\\c", a, "a\\:b\\\\c");
+
+    assertEscapedQueryEquals("a:b-c*", a, "a\\:b\\-c\\*");
+    assertEscapedQueryEquals("a:b+c*", a, "a\\:b\\+c\\*");
+    assertEscapedQueryEquals("a:b:c*", a, "a\\:b\\:c\\*");
+
+    assertEscapedQueryEquals("a:b\\\\c*", a, "a\\:b\\\\\\\\c\\*");
+
+    assertEscapedQueryEquals("a:b-?c", a, "a\\:b\\-\\?c");
+    assertEscapedQueryEquals("a:b+?c", a, "a\\:b\\+\\?c");
+    assertEscapedQueryEquals("a:b:?c", a, "a\\:b\\:\\?c");
+
+    assertEscapedQueryEquals("a:b?c", a, "a\\:b\\?c");
+
+    assertEscapedQueryEquals("a:b-c~", a, "a\\:b\\-c\\~");
+    assertEscapedQueryEquals("a:b+c~", a, "a\\:b\\+c\\~");
+    assertEscapedQueryEquals("a:b:c~", a, "a\\:b\\:c\\~");
+    assertEscapedQueryEquals("a:b\\c~", a, "a\\:b\\\\c\\~");
+
+    assertEscapedQueryEquals("[ a - TO a+ ]", null, "\\[ a \\- TO a\\+ \\]");
+    assertEscapedQueryEquals("[ a : TO a~ ]", null, "\\[ a \\: TO a\\~ \\]");
+    assertEscapedQueryEquals("[ a\\ TO a* ]", null, "\\[ a\\\\ TO a\\* \\]");
+    
+    // LUCENE-881
+    assertEscapedQueryEquals("|| abc ||", a, "\\|\\| abc \\|\\|");
+    assertEscapedQueryEquals("&& abc &&", a, "\\&\\& abc \\&\\&");
+  }
+  
+  public void testTabNewlineCarriageReturn()
+    throws Exception {
+    assertQueryEqualsDOA("+weltbank +worlbank", null,
+      "+weltbank +worlbank");
+
+    assertQueryEqualsDOA("+weltbank\n+worlbank", null,
+      "+weltbank +worlbank");
+    assertQueryEqualsDOA("weltbank \n+worlbank", null,
+      "+weltbank +worlbank");
+    assertQueryEqualsDOA("weltbank \n +worlbank", null,
+      "+weltbank +worlbank");
+
+    assertQueryEqualsDOA("+weltbank\r+worlbank", null,
+      "+weltbank +worlbank");
+    assertQueryEqualsDOA("weltbank \r+worlbank", null,
+      "+weltbank +worlbank");
+    assertQueryEqualsDOA("weltbank \r +worlbank", null,
+      "+weltbank +worlbank");
+
+    assertQueryEqualsDOA("+weltbank\r\n+worlbank", null,
+      "+weltbank +worlbank");
+    assertQueryEqualsDOA("weltbank \r\n+worlbank", null,
+      "+weltbank +worlbank");
+    assertQueryEqualsDOA("weltbank \r\n +worlbank", null,
+      "+weltbank +worlbank");
+    assertQueryEqualsDOA("weltbank \r \n +worlbank", null,
+      "+weltbank +worlbank");
+
+    assertQueryEqualsDOA("+weltbank\t+worlbank", null,
+      "+weltbank +worlbank");
+    assertQueryEqualsDOA("weltbank \t+worlbank", null,
+      "+weltbank +worlbank");
+    assertQueryEqualsDOA("weltbank \t +worlbank", null,
+      "+weltbank +worlbank");
+  }
+
+  public void testSimpleDAO()
+    throws Exception {
+    assertQueryEqualsDOA("term term term", null, "+term +term +term");
+    assertQueryEqualsDOA("term +term term", null, "+term +term +term");
+    assertQueryEqualsDOA("term term +term", null, "+term +term +term");
+    assertQueryEqualsDOA("term +term +term", null, "+term +term +term");
+    assertQueryEqualsDOA("-term term term", null, "-term +term +term");
+  }
+
+  public void testBoost()
+    throws Exception {
+    CharacterRunAutomaton stopWords = new CharacterRunAutomaton(BasicAutomata.makeString("on"));
+    Analyzer oneStopAnalyzer = new MockAnalyzer(random, MockTokenizer.SIMPLE, true, stopWords, true);
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", oneStopAnalyzer);
+    Query q = qp.parse("on^1.0");
+    assertNotNull(q);
+    q = qp.parse("\"hello\"^2.0");
+    assertNotNull(q);
+    assertEquals(q.getBoost(), (float) 2.0, (float) 0.5);
+    q = qp.parse("hello^2.0");
+    assertNotNull(q);
+    assertEquals(q.getBoost(), (float) 2.0, (float) 0.5);
+    q = qp.parse("\"on\"^1.0");
+    assertNotNull(q);
+
+    QueryParser qp2 = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random, MockTokenizer.SIMPLE, true, MockTokenFilter.ENGLISH_STOPSET, true));
+    q = qp2.parse("the^3");
+    // "the" is a stop word so the result is an empty query:
+    assertNotNull(q);
+    assertEquals("", q.toString());
+    assertEquals(1.0f, q.getBoost(), 0.01f);
+  }
+
+  public void assertParseException(String queryString) throws Exception {
+    try {
+      getQuery(queryString, null);
+    } catch (ParseException expected) {
+      return;
+    }
+    fail("ParseException expected, not thrown");
+  }
+       
+  public void testException() throws Exception {
+    assertParseException("\"some phrase");
+    assertParseException("(foo bar");
+    assertParseException("foo bar))");
+    assertParseException("field:term:with:colon some more terms");
+    assertParseException("(sub query)^5.0^2.0 plus more");
+    assertParseException("secret AND illegal) AND access:confidential");
+  }
+  
+
+  public void testCustomQueryParserWildcard() {
+    try {
+      new QPTestParser("contents", new MockAnalyzer(random, MockTokenizer.WHITESPACE, false)).parse("a?t");
+      fail("Wildcard queries should not be allowed");
+    } catch (ParseException expected) {
+      // expected exception
+    }
+  }
+
+  public void testCustomQueryParserFuzzy() throws Exception {
+    try {
+      new QPTestParser("contents", new MockAnalyzer(random, MockTokenizer.WHITESPACE, false)).parse("xunit~");
+      fail("Fuzzy queries should not be allowed");
+    } catch (ParseException expected) {
+      // expected exception
+    }
+  }
+
+  public void testBooleanQuery() throws Exception {
+    BooleanQuery.setMaxClauseCount(2);
+    try {
+      QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
+      qp.parse("one two three");
+      fail("ParseException expected due to too many boolean clauses");
+    } catch (ParseException expected) {
+      // too many boolean clauses, so ParseException is expected
+    }
+  }
+
+  /**
+   * This test differs from TestPrecedenceQueryParser
+   */
+  public void testPrecedence() throws Exception {
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
+    Query query1 = qp.parse("A AND B OR C AND D");
+    Query query2 = qp.parse("+A +B +C +D");
+    assertEquals(query1, query2);
+  }
+
+// Todo: convert this from DateField to DateUtil
+//  public void testLocalDateFormat() throws IOException, ParseException {
+//    Directory ramDir = newDirectory();
+//    IndexWriter iw = new IndexWriter(ramDir, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random, MockTokenizer.WHITESPACE, false)));
+//    addDateDoc("a", 2005, 12, 2, 10, 15, 33, iw);
+//    addDateDoc("b", 2005, 12, 4, 22, 15, 00, iw);
+//    iw.close();
+//    IndexSearcher is = new IndexSearcher(ramDir, true);
+//    assertHits(1, "[12/1/2005 TO 12/3/2005]", is);
+//    assertHits(2, "[12/1/2005 TO 12/4/2005]", is);
+//    assertHits(1, "[12/3/2005 TO 12/4/2005]", is);
+//    assertHits(1, "{12/1/2005 TO 12/3/2005}", is);
+//    assertHits(1, "{12/1/2005 TO 12/4/2005}", is);
+//    assertHits(0, "{12/3/2005 TO 12/4/2005}", is);
+//    is.close();
+//    ramDir.close();
+//  }
+//
+//  private void addDateDoc(String content, int year, int month,
+//                          int day, int hour, int minute, int second, IndexWriter iw) throws IOException {
+//    Document d = new Document();
+//    d.add(newField("f", content, Field.Store.YES, Field.Index.ANALYZED));
+//    Calendar cal = Calendar.getInstance(Locale.ENGLISH);
+//    cal.set(year, month - 1, day, hour, minute, second);
+//    d.add(newField("date", DateField.dateToString(cal.getTime()), Field.Store.YES, Field.Index.NOT_ANALYZED));
+//    iw.addDocument(d);
+//  }
+
+  public void testStarParsing() throws Exception {
+    final int[] type = new int[1];
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random, MockTokenizer.WHITESPACE, false)) {
+      @Override
+      protected Query getWildcardQuery(String field, String termStr) throws ParseException {
+        // override error checking of superclass
+        type[0]=1;
+        return new TermQuery(new Term(field,termStr));
+      }
+      @Override
+      protected Query getPrefixQuery(String field, String termStr) throws ParseException {
+        // override error checking of superclass
+        type[0]=2;        
+        return new TermQuery(new Term(field,termStr));
+      }
+
+      @Override
+      protected Query getFieldQuery(String field, String queryText, boolean quoted) throws ParseException {
+        type[0]=3;
+        return super.getFieldQuery(field, queryText, quoted);
+      }
+    };
+
+    TermQuery tq;
+
+    tq = (TermQuery)qp.parse("foo:zoo*");
+    assertEquals("zoo",tq.getTerm().text());
+    assertEquals(2,type[0]);
+
+    tq = (TermQuery)qp.parse("foo:zoo*^2");
+    assertEquals("zoo",tq.getTerm().text());
+    assertEquals(2,type[0]);
+    assertEquals(tq.getBoost(),2,0);
+
+    tq = (TermQuery)qp.parse("foo:*");
+    assertEquals("*",tq.getTerm().text());
+    assertEquals(1,type[0]);  // could be a valid prefix query in the future too
+
+    tq = (TermQuery)qp.parse("foo:*^2");
+    assertEquals("*",tq.getTerm().text());
+    assertEquals(1,type[0]);
+    assertEquals(tq.getBoost(),2,0);    
+
+    tq = (TermQuery)qp.parse("*:foo");
+    assertEquals("*",tq.getTerm().field());
+    assertEquals("foo",tq.getTerm().text());
+    assertEquals(3,type[0]);
+
+    tq = (TermQuery)qp.parse("*:*");
+    assertEquals("*",tq.getTerm().field());
+    assertEquals("*",tq.getTerm().text());
+    assertEquals(1,type[0]);  // could be handled as a prefix query in the future
+
+     tq = (TermQuery)qp.parse("(*:*)");
+    assertEquals("*",tq.getTerm().field());
+    assertEquals("*",tq.getTerm().text());
+    assertEquals(1,type[0]);
+
+  }
+
+  public void testEscapedWildcard() throws Exception {
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
+    WildcardQuery q = new WildcardQuery(new Term("field", "foo\\?ba?r"));
+    assertEquals(q, qp.parse("foo\\?ba?r"));
+  }
+  
+  public void testRegexps() throws Exception {
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
+    RegexpQuery q = new RegexpQuery(new Term("field", "[a-z][123]"));
+    assertEquals(q, qp.parse("/[a-z][123]/"));
+    qp.setLowercaseExpandedTerms(true);
+    assertEquals(q, qp.parse("/[A-Z][123]/"));
+    q.setBoost(0.5f);
+    assertEquals(q, qp.parse("/[A-Z][123]/^0.5"));
+    qp.setMultiTermRewriteMethod(MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE);
+    q.setRewriteMethod(MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE);
+    assertTrue(qp.parse("/[A-Z][123]/^0.5") instanceof RegexpQuery);
+    assertEquals(MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE, ((RegexpQuery)qp.parse("/[A-Z][123]/^0.5")).getRewriteMethod());
+    assertEquals(q, qp.parse("/[A-Z][123]/^0.5"));
+    qp.setMultiTermRewriteMethod(MultiTermQuery.CONSTANT_SCORE_AUTO_REWRITE_DEFAULT);
+    
+    Query escaped = new RegexpQuery(new Term("field", "[a-z]\\/[123]"));
+    assertEquals(escaped, qp.parse("/[a-z]\\/[123]/"));
+    Query escaped2 = new RegexpQuery(new Term("field", "[a-z]\\*[123]"));
+    assertEquals(escaped2, qp.parse("/[a-z]\\*[123]/"));
+    
+    BooleanQuery complex = new BooleanQuery();
+    complex.add(new RegexpQuery(new Term("field", "[a-z]\\/[123]")), Occur.MUST);
+    complex.add(new TermQuery(new Term("path", "/etc/init.d/")), Occur.MUST);
+    complex.add(new TermQuery(new Term("field", "/etc/init[.]d/lucene/")), Occur.SHOULD);
+    assertEquals(complex, qp.parse("/[a-z]\\/[123]/ AND path:/etc/init.d/ OR /etc\\/init\\[.\\]d/lucene/ "));
+  }
+  
+  public void testStopwords() throws Exception {
+    CharacterRunAutomaton stopSet = new CharacterRunAutomaton(new RegExp("the|foo").toAutomaton());
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "a", new MockAnalyzer(random, MockTokenizer.SIMPLE, true, stopSet, true));
+    Query result = qp.parse("a:the OR a:foo");
+    assertNotNull("result is null and it shouldn't be", result);
+    assertTrue("result is not a BooleanQuery", result instanceof BooleanQuery);
+    assertTrue(((BooleanQuery) result).clauses().size() + " does not equal: " + 0, ((BooleanQuery) result).clauses().size() == 0);
+    result = qp.parse("a:woo OR a:the");
+    assertNotNull("result is null and it shouldn't be", result);
+    assertTrue("result is not a TermQuery", result instanceof TermQuery);
+    result = qp.parse("(fieldX:xxxxx OR fieldy:xxxxxxxx)^2 AND (fieldx:the OR fieldy:foo)");
+    assertNotNull("result is null and it shouldn't be", result);
+    assertTrue("result is not a BooleanQuery", result instanceof BooleanQuery);
+    if (VERBOSE) System.out.println("Result: " + result);
+    assertTrue(((BooleanQuery) result).clauses().size() + " does not equal: " + 2, ((BooleanQuery) result).clauses().size() == 2);
+  }
+
+  public void testPositionIncrement() throws Exception {
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "a", new MockAnalyzer(random, MockTokenizer.SIMPLE, true, MockTokenFilter.ENGLISH_STOPSET, true));
+    qp.setEnablePositionIncrements(true);
+    String qtxt = "\"the words in poisitions pos02578 are stopped in this phrasequery\"";
+    //               0         2                      5           7  8
+    int expectedPositions[] = {1,3,4,6,9};
+    PhraseQuery pq = (PhraseQuery) qp.parse(qtxt);
+    //System.out.println("Query text: "+qtxt);
+    //System.out.println("Result: "+pq);
+    Term t[] = pq.getTerms();
+    int pos[] = pq.getPositions();
+    for (int i = 0; i < t.length; i++) {
+      //System.out.println(i+". "+t[i]+"  pos: "+pos[i]);
+      assertEquals("term "+i+" = "+t[i]+" has wrong term-position!",expectedPositions[i],pos[i]);
+    }
+  }
+
+  public void testMatchAllDocs() throws Exception {
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
+    assertEquals(new MatchAllDocsQuery(), qp.parse("*:*"));
+    assertEquals(new MatchAllDocsQuery(), qp.parse("(*:*)"));
+    BooleanQuery bq = (BooleanQuery)qp.parse("+*:* -*:*");
+    assertTrue(bq.getClauses()[0].getQuery() instanceof MatchAllDocsQuery);
+    assertTrue(bq.getClauses()[1].getQuery() instanceof MatchAllDocsQuery);
+  }
+  
+  private void assertHits(int expected, String query, IndexSearcher is) throws ParseException, IOException {
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "date", new MockAnalyzer(random, MockTokenizer.WHITESPACE, false));
+    qp.setLocale(Locale.ENGLISH);
+    Query q = qp.parse(query);
+    ScoreDoc[] hits = is.search(q, null, 1000).scoreDocs;
+    assertEquals(expected, hits.length);
+  }
+
+  @Override
+  public void tearDown() throws Exception {
+    BooleanQuery.setMaxClauseCount(originalMaxClauses);
+    super.tearDown();
+  }
+
+  // LUCENE-2002: make sure defaults for StandardAnalyzer's
+  // enableStopPositionIncr & QueryParser's enablePosIncr
+  // "match"
+  public void testPositionIncrements() throws Exception {
+    Directory dir = newDirectory();
+    Analyzer a = new MockAnalyzer(random, MockTokenizer.SIMPLE, true, MockTokenFilter.ENGLISH_STOPSET, true);
+    IndexWriter w = new IndexWriter(dir, newIndexWriterConfig( TEST_VERSION_CURRENT, a));
+    Document doc = new Document();
+    doc.add(newField("f", "the wizard of ozzy", Field.Store.NO, Field.Index.ANALYZED));
+    w.addDocument(doc);
+    IndexReader r = IndexReader.open(w, true);
+    w.close();
+    IndexSearcher s = newSearcher(r);
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "f", a);
+    Query q = qp.parse("\"wizard of ozzy\"");
+    assertEquals(1, s.search(q, 1).totalHits);
+    s.close();
+    r.close();
+    dir.close();
+  }
+
+  // LUCENE-2002: when we run javacc to regen QueryParser,
+  // we also run a replaceregexp step to fix 2 of the public
+  // ctors (change them to protected):
+  //
+  //   protected QueryParser(CharStream stream)
+  //
+  //   protected QueryParser(QueryParserTokenManager tm)
+  //
+  // This test is here as a safety, in case that ant step
+  // doesn't work for some reason.
+  public void testProtectedCtors() throws Exception {
+    try {
+      QueryParser.class.getConstructor(new Class[] {CharStream.class});
+      fail("please switch public QueryParser(CharStream) to be protected");
+    } catch (NoSuchMethodException nsme) {
+      // expected
+    }
+    try {
+      QueryParser.class.getConstructor(new Class[] {QueryParserTokenManager.class});
+      fail("please switch public QueryParser(QueryParserTokenManager) to be protected");
+    } catch (NoSuchMethodException nsme) {
+      // expected
+    }
+  }
+  
+  /**
+   * adds synonym of "dog" for "dogs".
+   */
+  private class MockSynonymFilter extends TokenFilter {
+    CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
+    PositionIncrementAttribute posIncAtt = addAttribute(PositionIncrementAttribute.class);
+    boolean addSynonym = false;
+    
+    public MockSynonymFilter(TokenStream input) {
+      super(input);
+    }
+
+    @Override
+    public final boolean incrementToken() throws IOException {
+      if (addSynonym) { // inject our synonym
+        clearAttributes();
+        termAtt.setEmpty().append("dog");
+        posIncAtt.setPositionIncrement(0);
+        addSynonym = false;
+        return true;
+      }
+      
+      if (input.incrementToken()) {
+        addSynonym = termAtt.toString().equals("dogs");
+        return true;
+      } else {
+        return false;
+      }
+    } 
+  }
+  
+  /** whitespace+lowercase analyzer with synonyms */
+  private class Analyzer1 extends Analyzer {
+    @Override
+    public TokenStream tokenStream(String fieldName, Reader reader) {
+      return new MockSynonymFilter(new MockTokenizer(reader, MockTokenizer.WHITESPACE, true));
+    }
+  }
+  
+  /** whitespace+lowercase analyzer without synonyms */
+  private class Analyzer2 extends Analyzer {
+    @Override
+    public TokenStream tokenStream(String fieldName, Reader reader) {
+      return new MockTokenizer(reader, MockTokenizer.WHITESPACE, true);
+    }
+  }
+  
+  /** query parser that doesn't expand synonyms when users use double quotes */
+  private class SmartQueryParser extends QueryParser {
+    Analyzer morePrecise = new Analyzer2();
+    
+    public SmartQueryParser() {
+      super(TEST_VERSION_CURRENT, "field", new Analyzer1());
+    }
+
+    @Override
+    protected Query getFieldQuery(String field, String queryText, boolean quoted)
+        throws ParseException {
+      if (quoted)
+        return newFieldQuery(morePrecise, field, queryText, quoted);
+      else
+        return super.getFieldQuery(field, queryText, quoted);
+    }
+  }
+  
+  public void testNewFieldQuery() throws Exception {
+    /** ordinary behavior, synonyms form uncoordinated boolean query */
+    QueryParser dumb = new QueryParser(TEST_VERSION_CURRENT, "field", new Analyzer1());
+    BooleanQuery expanded = new BooleanQuery(true);
+    expanded.add(new TermQuery(new Term("field", "dogs")), BooleanClause.Occur.SHOULD);
+    expanded.add(new TermQuery(new Term("field", "dog")), BooleanClause.Occur.SHOULD);
+    assertEquals(expanded, dumb.parse("\"dogs\""));
+    /** even with the phrase operator the behavior is the same */
+    assertEquals(expanded, dumb.parse("dogs"));
+    
+    /** custom behavior, the synonyms are expanded, unless you use quote operator */
+    QueryParser smart = new SmartQueryParser();
+    assertEquals(expanded, smart.parse("dogs"));
+    
+    Query unexpanded = new TermQuery(new Term("field", "dogs"));
+    assertEquals(unexpanded, smart.parse("\"dogs\""));
+  }
+  
+  /**
+   * Mock collation analyzer: indexes terms as "collated" + term
+   */
+  private class MockCollationFilter extends TokenFilter {
+    private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
+
+    protected MockCollationFilter(TokenStream input) {
+      super(input);
+    }
+
+    @Override
+    public boolean incrementToken() throws IOException {
+      if (input.incrementToken()) {
+        String term = termAtt.toString();
+        termAtt.setEmpty().append("collated").append(term);
+        return true;
+      } else {
+        return false;
+      }
+    }
+    
+  }
+  private class MockCollationAnalyzer extends Analyzer {
+    @Override
+    public TokenStream tokenStream(String fieldName, Reader reader) {
+      return new MockCollationFilter(new MockTokenizer(reader, MockTokenizer.WHITESPACE, true));
+    }
+  }
+  
+  public void testCollatedRange() throws Exception {
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockCollationAnalyzer());
+    qp.setAnalyzeRangeTerms(true);
+    Query expected = TermRangeQuery.newStringRange("field", "collatedabc", "collateddef", true, true);
+    Query actual = qp.parse("[abc TO def]");
+    assertEquals(expected, actual);
+  }
+
+  public void testDistanceAsEditsParsing() throws Exception {
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer(random));
+    FuzzyQuery q = (FuzzyQuery) qp.parse("foobar~2");
+    assertEquals(2f, q.getMinSimilarity(), 0.0001f);
+  }
+
+  public void testPhraseQueryToString() throws ParseException {
+    Analyzer analyzer = new MockAnalyzer(random, MockTokenizer.SIMPLE, true, MockTokenFilter.ENGLISH_STOPSET, true);
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", analyzer);
+    qp.setEnablePositionIncrements(true);
+    PhraseQuery q = (PhraseQuery)qp.parse("\"this hi this is a test is\"");
+    assertEquals("field:\"? hi ? ? ? test\"", q.toString());
+  }
+
+  public void testParseWildcardAndPhraseQueries() throws ParseException {
+    String field = "content";
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, field, new MockAnalyzer(random));
+    qp.setAllowLeadingWildcard(true);
+
+    String prefixQueries[][] = {
+        {"a*", "ab*", "abc*",},
+        {"h*", "hi*", "hij*", "\\\\7*"},
+        {"o*", "op*", "opq*", "\\\\\\\\*"},
+    };
+
+    String wildcardQueries[][] = {
+        {"*a*", "*ab*", "*abc**", "ab*e*", "*g?", "*f?1", "abc**"},
+        {"*h*", "*hi*", "*hij**", "hi*k*", "*n?", "*m?1", "hij**"},
+        {"*o*", "*op*", "*opq**", "op*q*", "*u?", "*t?1", "opq**"},
+    };
+
+     // test queries that must be prefix queries
+    for (int i = 0; i < prefixQueries.length; i++) {
+      for (int j = 0; j < prefixQueries[i].length; j++) {
+        String queryString = prefixQueries[i][j];
+        Query q = qp.parse(queryString);
+        assertEquals(PrefixQuery.class, q.getClass());
+      }
+    }
+
+    // test queries that must be wildcard queries
+    for (int i = 0; i < wildcardQueries.length; i++) {
+      for (int j = 0; j < wildcardQueries[i].length; j++) {
+        String qtxt = wildcardQueries[i][j];
+        Query q = qp.parse(qtxt);
+        assertEquals(WildcardQuery.class, q.getClass());
+      }
+    }
+  }
+
+  public void testPhraseQueryPositionIncrements() throws Exception {
+    CharacterRunAutomaton stopStopList =
+    new CharacterRunAutomaton(new RegExp("[sS][tT][oO][pP]").toAutomaton());
+
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field",
+        new MockAnalyzer(random, MockTokenizer.WHITESPACE, false, stopStopList, false));
+
+    PhraseQuery phraseQuery = new PhraseQuery();
+    phraseQuery.add(new Term("field", "1"));
+    phraseQuery.add(new Term("field", "2"));
+
+    assertEquals(phraseQuery, qp.parse("\"1 2\""));
+    assertEquals(phraseQuery, qp.parse("\"1 stop 2\""));
+
+    qp.setEnablePositionIncrements(true);
+    assertEquals(phraseQuery, qp.parse("\"1 stop 2\""));
+
+    qp.setEnablePositionIncrements(false);
+    assertEquals(phraseQuery, qp.parse("\"1 stop 2\""));
+
+    qp = new QueryParser(TEST_VERSION_CURRENT, "field",
+                         new MockAnalyzer(random, MockTokenizer.WHITESPACE, false, stopStopList, true));
+    qp.setEnablePositionIncrements(true);
+
+    phraseQuery = new PhraseQuery();
+    phraseQuery.add(new Term("field", "1"));
+    phraseQuery.add(new Term("field", "2"), 2);
+    assertEquals(phraseQuery, qp.parse("\"1 stop 2\""));
+  }
+
+  public void testMatchAllQueryParsing() throws Exception {
+    // test simple parsing of MatchAllDocsQuery
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "key", new MockAnalyzer(random));
+    assertEquals(new MatchAllDocsQuery(), qp.parse(new MatchAllDocsQuery().toString()));
+
+    // test parsing with non-default boost
+    MatchAllDocsQuery query = new MatchAllDocsQuery();
+    query.setBoost(2.3f);
+    assertEquals(query, qp.parse(query.toString()));
+  }
+  
+}