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1   /*******************************************************************************
2    * SAT4J: a SATisfiability library for Java Copyright (C) 2004, 2012 Artois University and CNRS
3    *
4    * All rights reserved. This program and the accompanying materials
5    * are made available under the terms of the Eclipse Public License v1.0
6    * which accompanies this distribution, and is available at
7    *  http://www.eclipse.org/legal/epl-v10.html
8    *
9    * Alternatively, the contents of this file may be used under the terms of
10   * either the GNU Lesser General Public License Version 2.1 or later (the
11   * "LGPL"), in which case the provisions of the LGPL are applicable instead
12   * of those above. If you wish to allow use of your version of this file only
13   * under the terms of the LGPL, and not to allow others to use your version of
14   * this file under the terms of the EPL, indicate your decision by deleting
15   * the provisions above and replace them with the notice and other provisions
16   * required by the LGPL. If you do not delete the provisions above, a recipient
17   * may use your version of this file under the terms of the EPL or the LGPL.
18   *
19   * Based on the original MiniSat specification from:
20   *
21   * An extensible SAT solver. Niklas Een and Niklas Sorensson. Proceedings of the
22   * Sixth International Conference on Theory and Applications of Satisfiability
23   * Testing, LNCS 2919, pp 502-518, 2003.
24   *
25   * See www.minisat.se for the original solver in C++.
26   *
27   * Contributors:
28   *   CRIL - initial API and implementation
29   *******************************************************************************/
30  
31  package org.sat4j.minisat;
32  
33  import java.io.FileNotFoundException;
34  import java.io.IOException;
35  
36  import junit.framework.TestCase;
37  
38  import org.sat4j.reader.InstanceReader;
39  import org.sat4j.reader.ParseFormatException;
40  import org.sat4j.reader.Reader;
41  import org.sat4j.specs.ContradictionException;
42  import org.sat4j.specs.ISolver;
43  import org.sat4j.specs.TimeoutException;
44  
45  /**
46   * @author leberre
47   * 
48   *         To change the template for this generated type comment go to Window -
49   *         Preferences - Java - Code Generation - Code and Comments
50   */
51  public abstract class AbstractAcceptanceTestCase<T extends ISolver> extends
52          TestCase {
53  
54      /**
55       * 
56       */
57      public AbstractAcceptanceTestCase() {
58          super();
59      }
60  
61      /**
62       * @param arg0
63       */
64      public AbstractAcceptanceTestCase(String arg0) {
65          super(arg0);
66      }
67  
68      protected T solver;
69  
70      protected Reader reader;
71  
72      protected abstract T createSolver();
73  
74      /**
75       * @see TestCase#setUp()
76       */
77      @Override
78      protected void setUp() {
79          this.solver = createSolver();
80          this.reader = createInstanceReader(this.solver);
81      }
82  
83      protected Reader createInstanceReader(T aSolver) {
84          return new InstanceReader(aSolver);
85      }
86  
87      @Override
88      protected void tearDown() {
89          this.solver.reset();
90      }
91  
92      protected boolean solveInstance(String filename)
93              throws FileNotFoundException, ParseFormatException, IOException {
94          try {
95              this.reader.parseInstance(filename);
96              this.solver.setTimeout(300); // set timeout to 5 minutes.
97              return this.solver.isSatisfiable();
98          } catch (ContradictionException ce) {
99              return false;
100         } catch (TimeoutException ce) {
101             fail("Timeout: need more time to complete!");
102             return false;
103         }
104     }
105 
106 }