code: /*
   * Copyright (c) 2018, The Regents of the University of California
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   * 1. Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   * notice, this list of conditions and the following disclaimer in the
   * documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package edu.berkeley.cs.jqf.examples.bcel;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  
  import com.pholser.junit.quickcheck.From;
  import de.hub.se.jqf.bedivfuzz.examples.bcel.SplitJavaClassGenerator;
  import edu.berkeley.cs.jqf.fuzz.Fuzz;
  import edu.berkeley.cs.jqf.fuzz.JQF;
  import org.apache.bcel.Repository;
  import org.apache.bcel.classfile.ClassFormatException;
  import org.apache.bcel.classfile.ClassParser;
  import org.apache.bcel.classfile.JavaClass;
  import org.apache.bcel.verifier.StatelessVerifierFactory;
  import org.apache.bcel.verifier.VerificationResult;
  import org.apache.bcel.verifier.Verifier;
  import org.junit.Assume;
  import org.junit.runner.RunWith;
  
  import static org.hamcrest.Matchers.is;
  import static org.junit.Assume.assumeThat;
  
  @RunWith(JQF.class)
  public class ParserTest {
  
      @Fuzz
      public void testWithInputStream(InputStream inputStream) throws IOException {
          JavaClass clazz;
          try {
              clazz = new ClassParser(inputStream, "Hello.class").parse();
          } catch (ClassFormatException e) {
              // ClassFormatException thrown by the parser is just invalid input
              Assume.assumeNoException(e);
              return;
          }
  
          // Any non-IOException thrown here should be marked a failure
          // (including ClassFormatException)
          verifyJavaClass(clazz);
      }
  
      @Fuzz
      public void testWithGenerator(@From(JavaClassGenerator.class) JavaClass javaClass) throws IOException {
  
          try {
              // Dump the javaclass to a byte stream and get an input pipe
              ByteArrayOutputStream out = new ByteArrayOutputStream();
              javaClass.dump(out);
  
              ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
              testWithInputStream(in);
          } catch (ClassFormatException e) {
              throw e;
          }
      }
  
      @Fuzz
      public void testWithSplitGenerator(@From(SplitJavaClassGenerator.class) JavaClass javaClass) throws IOException {
  
          try {
              // Dump the javaclass to a byte stream and get an input pipe
              ByteArrayOutputStream out = new ByteArrayOutputStream();
              javaClass.dump(out);
  
              ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
              testWithInputStream(in);
          } catch (ClassFormatException e) {
              throw e;
          }
      }
  
      @Fuzz
      public void verifyJavaClass(@From(JavaClassGenerator.class) JavaClass javaClass) throws IOException {
          try {
              Repository.addClass(javaClass);
              Verifier verifier = StatelessVerifierFactory.getVerifier(javaClass.getClassName());
              VerificationResult result;
              result = verifier.doPass1();
              assumeThat(result.getMessage(), result.getStatus(), is(VerificationResult.VERIFIED_OK));
              result = verifier.doPass2();
              assumeThat(result.getMessage(), result.getStatus(), is(VerificationResult.VERIFIED_OK));
              for (int i = 0; i < javaClass.getMethods().length; i++) {
                  result = verifier.doPass3a(i);
                  assumeThat(result.getMessage(), result.getStatus(), is(VerificationResult.VERIFIED_OK));
              }
          } finally {
              Repository.clearCache();
          }
      }
  
  }
  