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From ehatc...@apache.org
Subject svn commit: r156431 [3/3] - in lucene/java/trunk: ./ src/java/org/apache/lucene/queryParser/precedence/ src/test/org/apache/lucene/queryParser/ src/test/org/apache/lucene/queryParser/precedence/
Date Mon, 07 Mar 2005 16:08:09 GMT
Added: lucene/java/trunk/src/test/org/apache/lucene/queryParser/precedence/TestPrecedenceQueryParser.java
URL: http://svn.apache.org/viewcvs/lucene/java/trunk/src/test/org/apache/lucene/queryParser/precedence/TestPrecedenceQueryParser.java?view=auto&rev=156431
==============================================================================
--- lucene/java/trunk/src/test/org/apache/lucene/queryParser/precedence/TestPrecedenceQueryParser.java
(added)
+++ lucene/java/trunk/src/test/org/apache/lucene/queryParser/precedence/TestPrecedenceQueryParser.java
Mon Mar  7 08:08:02 2005
@@ -0,0 +1,540 @@
+package org.apache.lucene.queryParser.precedence;
+
+/**
+ * Copyright 2002-2004 The Apache Software Foundation
+ *
+ * Licensed 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 junit.framework.TestCase;
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.analysis.LowerCaseTokenizer;
+import org.apache.lucene.analysis.SimpleAnalyzer;
+import org.apache.lucene.analysis.Token;
+import org.apache.lucene.analysis.TokenFilter;
+import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.analysis.WhitespaceAnalyzer;
+import org.apache.lucene.analysis.standard.StandardAnalyzer;
+import org.apache.lucene.document.DateTools;
+import org.apache.lucene.search.BooleanQuery;
+import org.apache.lucene.search.FuzzyQuery;
+import org.apache.lucene.search.PhraseQuery;
+import org.apache.lucene.search.PrefixQuery;
+import org.apache.lucene.search.Query;
+import org.apache.lucene.search.RangeQuery;
+import org.apache.lucene.search.TermQuery;
+import org.apache.lucene.search.WildcardQuery;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.text.DateFormat;
+import java.util.Calendar;
+
+public class TestPrecedenceQueryParser extends TestCase {
+
+  public static Analyzer qpAnalyzer = new QPTestAnalyzer();
+
+  public static class QPTestFilter extends TokenFilter {
+    /**
+     * Filter which discards the token 'stop' and which expands the
+     * token 'phrase' into 'phrase1 phrase2'
+     */
+    public QPTestFilter(TokenStream in) {
+      super(in);
+    }
+
+    boolean inPhrase = false;
+    int savedStart = 0, savedEnd = 0;
+
+    public Token next() throws IOException {
+      if (inPhrase) {
+        inPhrase = false;
+        return new Token("phrase2", savedStart, savedEnd);
+      } else
+        for (Token token = input.next(); token != null; token = input.next()) {
+          if (token.termText().equals("phrase")) {
+            inPhrase = true;
+            savedStart = token.startOffset();
+            savedEnd = token.endOffset();
+            return new Token("phrase1", savedStart, savedEnd);
+          } else if (!token.termText().equals("stop"))
+            return token;
+        }
+      return null;
+    }
+  }
+
+  public static class QPTestAnalyzer extends Analyzer {
+
+    /** Filters LowerCaseTokenizer with StopFilter. */
+    public final TokenStream tokenStream(String fieldName, Reader reader) {
+      return new QPTestFilter(new LowerCaseTokenizer(reader));
+    }
+  }
+
+  public static class QPTestParser extends PrecedenceQueryParser {
+    public QPTestParser(String f, Analyzer a) {
+      super(f, a);
+    }
+
+    protected Query getFuzzyQuery(String field, String termStr, float minSimilarity) throws
ParseException {
+      throw new ParseException("Fuzzy queries not allowed");
+    }
+
+    protected Query getWildcardQuery(String field, String termStr) throws ParseException
{
+      throw new ParseException("Wildcard queries not allowed");
+    }
+  }
+
+  private int originalMaxClauses;
+
+  public void setUp() {
+    originalMaxClauses = BooleanQuery.getMaxClauseCount();
+  }
+
+  public PrecedenceQueryParser getParser(Analyzer a) throws Exception {
+    if (a == null)
+      a = new SimpleAnalyzer();
+    PrecedenceQueryParser qp = new PrecedenceQueryParser("field", a);
+    qp.setDefaultOperator(PrecedenceQueryParser.OR_OPERATOR);
+    return qp;
+  }
+
+  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 assertWildcardQueryEquals(String query, boolean lowercase, String result)
+    throws Exception {
+    PrecedenceQueryParser qp = getParser(null);
+    qp.setLowercaseExpandedTerms(lowercase);
+    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, String result) throws Exception {
+    PrecedenceQueryParser 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 SimpleAnalyzer();
+    PrecedenceQueryParser qp = new PrecedenceQueryParser("field", a);
+    qp.setDefaultOperator(PrecedenceQueryParser.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 testSimple() throws Exception {
+    assertQueryEquals("term term term", null, "term term term");
+    assertQueryEquals("türm term term", null, "türm term term");
+    assertQueryEquals("ümlaut", null, "ümlaut");
+
+    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");
+
+    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\"");
+    
+    PrecedenceQueryParser qp = new PrecedenceQueryParser("field", new StandardAnalyzer());
+    // make sure OR is the default:
+    assertEquals(PrecedenceQueryParser.OR_OPERATOR, qp.getDefaultOperator());
+    qp.setDefaultOperator(PrecedenceQueryParser.AND_OPERATOR);
+    assertEquals(PrecedenceQueryParser.AND_OPERATOR, qp.getDefaultOperator());
+    qp.setDefaultOperator(PrecedenceQueryParser.OR_OPERATOR);
+    assertEquals(PrecedenceQueryParser.OR_OPERATOR, qp.getDefaultOperator());
+  }
+
+  public void testPunct() throws Exception {
+    Analyzer a = new WhitespaceAnalyzer();
+    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 StandardAnalyzer();
+    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~0.5");
+    assertQueryEquals("term~0.7", null, "term~0.7");
+    assertQueryEquals("term~^2", null, "term^2.0~0.5");
+    assertQueryEquals("term^2~", null, "term^2.0~0.5");
+    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(0.5f, fq.getMinSimilarity(), 0.1f);
+    assertEquals(FuzzyQuery.defaultPrefixLength, fq.getPrefixLength());
+    try {
+      getQuery("term~1.1", null);   // value > 1, throws exception
+      fail();
+    } catch(ParseException pe) {
+      // expected 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~0.5");
+    assertWildcardQueryEquals("Term~", true, "term~0.5");
+    assertWildcardQueryEquals("Term~", false, "Term~0.5");
+//  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]");
+  }
+
+  public void testQPA() throws Exception {
+    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 phrase term", qpAnalyzer,
+                      "term \"phrase1 phrase2\" term");
+    // note the parens in this next assertion differ from the original
+    // QueryParser behavior
+    assertQueryEquals("term AND NOT phrase term", qpAnalyzer,
+                      "(+term -\"phrase1 phrase2\") term");
+    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]");
+    assertTrue(getQuery("[ a TO z]", null) instanceof RangeQuery);
+    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})");
+  }
+
+  public String getDate(String s) throws Exception {
+    DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
+    return DateTools.dateToString(df.parse(s), DateTools.Resolution.DAY);
+  }
+
+  public String getLocalizedDate(int year, int month, int day) {
+    DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT);
+    Calendar calendar = Calendar.getInstance();
+    calendar.set(year, month, day);
+    return df.format(calendar.getTime());
+  }
+
+  public void testDateRange() throws Exception {
+    String startDate = getLocalizedDate(2002, 1, 1);
+    String endDate = getLocalizedDate(2002, 1, 4);
+    assertQueryEquals("[ " + startDate + " TO " + endDate + "]", null,
+                      "[" + getDate(startDate) + " TO " + getDate(endDate) + "]");
+    assertQueryEquals("{  " + startDate + "    " + endDate + "   }", null,
+                      "{" + getDate(startDate) + " TO " + getDate(endDate) + "}");
+  }
+
+  public void testEscaped() throws Exception {
+    Analyzer a = new WhitespaceAnalyzer();
+    
+    /*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\\-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~0.5");
+    assertQueryEquals("a:b\\+c~", a, "a:b+c~0.5");
+    assertQueryEquals("a:b\\:c~", a, "a:b:c~0.5");
+    assertQueryEquals("a:b\\\\c~", a, "a:b\\c~0.5");
+
+    assertQueryEquals("[ a\\- TO a\\+ ]", null, "[a- TO a+]");
+    assertQueryEquals("[ a\\: TO a\\~ ]", null, "[a: TO a~]");
+    assertQueryEquals("[ a\\\\ TO a\\* ]", null, "[a\\ TO a*]");
+  }
+
+  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 {
+    StandardAnalyzer oneStopAnalyzer = new StandardAnalyzer(new String[]{"on"});
+    PrecedenceQueryParser qp = new PrecedenceQueryParser("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);
+
+    q = PrecedenceQueryParser.parse("the^3", "field", new StandardAnalyzer());
+    assertNotNull(q);
+  }
+
+  public void testException() throws Exception {
+    try {
+      assertQueryEquals("\"some phrase", null, "abc");
+      fail("ParseException expected, not thrown");
+    } catch (ParseException expected) {
+    }
+  }
+
+  public void testCustomQueryParserWildcard() {
+    try {
+      new QPTestParser("contents", new WhitespaceAnalyzer()).parse("a?t");
+    } catch (ParseException expected) {
+      return;
+    }
+    fail("Wildcard queries should not be allowed");
+  }
+
+  public void testCustomQueryParserFuzzy() throws Exception {
+    try {
+      new QPTestParser("contents", new WhitespaceAnalyzer()).parse("xunit~");
+    } catch (ParseException expected) {
+      return;
+    }
+    fail("Fuzzy queries should not be allowed");
+  }
+
+  public void testBooleanQuery() throws Exception {
+    BooleanQuery.setMaxClauseCount(2);
+    try {
+      PrecedenceQueryParser.parse("one two three", "field", new WhitespaceAnalyzer());
+      fail("ParseException expected due to too many boolean clauses");
+    } catch (ParseException expected) {
+      // too many boolean clauses, so ParseException is expected
+    }
+  }
+
+  /**
+   * This test differs from the original QueryParser, showing how the
+   * precedence issue has been corrected.
+   */
+  public void testPrecedence() throws Exception {
+    Query query1 = PrecedenceQueryParser.parse("A AND B OR C AND D", "field", new WhitespaceAnalyzer());
+    Query query2 = PrecedenceQueryParser.parse("(A AND B) OR (C AND D)", "field", new WhitespaceAnalyzer());
+    assertEquals(query1, query2);
+  }
+
+
+  public void tearDown() {
+    BooleanQuery.setMaxClauseCount(originalMaxClauses);
+  }
+
+}



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