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diff --git a/JLanguageTool/src/test/de/danielnaber/languagetool/rules/en/AvsAnRuleTest.java b/JLanguageTool/src/test/de/danielnaber/languagetool/rules/en/AvsAnRuleTest.java
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+++ b/JLanguageTool/src/test/de/danielnaber/languagetool/rules/en/AvsAnRuleTest.java
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+/* LanguageTool, a natural language style checker 
+ * Copyright (C) 2005 Daniel Naber (http://www.danielnaber.de)
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
+ * USA
+ */
+package de.danielnaber.languagetool.rules.en;
+
+import java.io.IOException;
+
+import junit.framework.TestCase;
+import de.danielnaber.languagetool.JLanguageTool;
+import de.danielnaber.languagetool.Language;
+import de.danielnaber.languagetool.rules.RuleMatch;
+
+/**
+ * @author Daniel Naber
+ */
+public class AvsAnRuleTest extends TestCase {
+
+  public void testRule() throws IOException {
+    AvsAnRule rule = new AvsAnRule(null);
+    RuleMatch[] matches;
+    JLanguageTool langTool = new JLanguageTool(Language.ENGLISH);
+    // correct sentences:
+    matches = rule.match(langTool.getAnalyzedSentence("This is a test sentence."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("It was an hour ago."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("A university is ..."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("A one-way street ..."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("An hour's work ..."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("Going to an \"industry party\"."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("An 8-year old boy ..."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("An 18-year old boy ..."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("The A-levels are ..."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("An NOP check ..."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("A USA-wide license ..."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("...asked a UN member."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("In an un-united Germany..."));
+    assertEquals(0, matches.length);
+    
+    //fixed false alarms:
+    matches = rule.match(langTool.getAnalyzedSentence("Here, a and b are supplementary angles."));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("The Qur'an was translated into Polish."));
+    assertEquals(0, matches.length);
+
+    // errors:
+    matches = rule.match(langTool.getAnalyzedSentence("It was a hour ago."));
+    assertEquals(1, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("It was an sentence that's long."));
+    assertEquals(1, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("It was a uninteresting talk."));
+    assertEquals(1, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("An university"));
+    assertEquals(1, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("A unintersting ..."));
+    assertEquals(1, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("It was a uninteresting talk with an long sentence."));
+    assertEquals(2, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("A hour's work ..."));
+    assertEquals(1, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("Going to a \"industry party\"."));
+    assertEquals(1, matches.length);
+    // With uppercase letters:
+    matches = rule.match(langTool.getAnalyzedSentence("A University"));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("A Europe wide something"));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("then an University sdoj fixme sdoopsd"));
+    assertEquals(1, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("A 8-year old boy ..."));
+    assertEquals(1, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("A 18-year old boy ..."));
+    assertEquals(1, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("...asked an UN member."));
+    assertEquals(1, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("In a un-united Germany..."));
+    assertEquals(1, matches.length);
+
+    //Test on acronyms/initials:
+    matches = rule.match(langTool.getAnalyzedSentence("A. R.J. Turgot"));
+    assertEquals(0, matches.length);
+    
+    //mixed case as dictionary-based exception
+    matches = rule.match(langTool.getAnalyzedSentence("Anyone for an MSc?"));
+    assertEquals(0, matches.length);
+    matches = rule.match(langTool.getAnalyzedSentence("Anyone for a MSc?"));
+    assertEquals(1, matches.length);
+    //mixed case from general case
+    matches = rule.match(langTool.getAnalyzedSentence("Anyone for an XMR-based writer?"));
+    assertEquals(0, matches.length);
+    
+    //Test on apostrophes    
+    matches = rule.match(langTool.getAnalyzedSentence("Its name in English is a[1] (), plural A's, As, as, or a's."));
+    assertEquals(0, matches.length);    
+  }
+    
+  public void testSuggestions() throws IOException {
+    AvsAnRule rule = new AvsAnRule(null);
+    assertEquals("a string", rule.suggestAorAn("string"));
+    assertEquals("a university", rule.suggestAorAn("university"));
+    assertEquals("an hour", rule.suggestAorAn("hour"));
+    assertEquals("an all-terrain", rule.suggestAorAn("all-terrain"));    
+    assertEquals("a UNESCO", rule.suggestAorAn("UNESCO"));
+    
+  }
+  
+  public void testPositions() throws IOException {
+    AvsAnRule rule = new AvsAnRule(null);
+    RuleMatch[] matches;
+    JLanguageTool langTool = new JLanguageTool(Language.ENGLISH);
+    // no quotes etc.:
+    matches = rule.match(langTool.getAnalyzedSentence("a industry standard."));
+    assertEquals(0, matches[0].getFromPos());
+    assertEquals(1, matches[0].getToPos());
+    
+    // quotes..
+    matches = rule.match(langTool.getAnalyzedSentence("a \"industry standard\"."));
+    assertEquals(0, matches[0].getFromPos());
+    assertEquals(1, matches[0].getToPos());
+    
+    matches = rule.match(langTool.getAnalyzedSentence("a - industry standard\"."));
+    assertEquals(0, matches[0].getFromPos());
+    assertEquals(1, matches[0].getToPos());
+    
+    matches = rule.match(langTool.getAnalyzedSentence("This is a \"industry standard\"."));
+    assertEquals(8, matches[0].getFromPos());
+    assertEquals(9, matches[0].getToPos());
+    
+    matches = rule.match(langTool.getAnalyzedSentence("\"a industry standard\"."));
+    assertEquals(1, matches[0].getFromPos());
+    assertEquals(2, matches[0].getToPos());
+    
+    matches = rule.match(langTool.getAnalyzedSentence("\"Many say this is a industry standard\"."));
+    assertEquals(18, matches[0].getFromPos());
+    assertEquals(19, matches[0].getToPos());
+    
+    matches = rule.match(langTool.getAnalyzedSentence("Like many \"an desperado\" before him, Bart headed south into Mexico."));
+    assertEquals(11, matches[0].getFromPos());
+    assertEquals(13, matches[0].getToPos());
+    
+  }
+}