package org.apache.maven.surefire.common.junit3;

 /*

  * 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 org.apache.maven.surefire.NonAbstractClassFilter;

 import org.apache.maven.surefire.util.ReflectionUtils;

 import org.apache.maven.surefire.util.ScannerFilter;

 import java.lang.reflect.Method;

 import java.lang.reflect.Modifier;

 /**

  * Missing tests ? This class is basically a subset of the JUnit4TestChecker, which is tested

  * to boredom and back. Unfortunately we don't have any common module between these providers,

  * so this stuff is duplicated. We should probably make some modules and just shade the content

  * into the providers.

  *

  * @author Kristian Rosenvold

  */

 public class JUnit3TestChecker

     implements ScannerFilter

 {

     private final Class junitClass;

     private static final Class[] EMPTY_CLASS_ARRAY = new Class[0];

     private final NonAbstractClassFilter nonAbstractClassFilter = new NonAbstractClassFilter();

     public JUnit3TestChecker( ClassLoader testClassLoader )

     {

         junitClass = ReflectionUtils.tryLoadClass( testClassLoader, "junit.framework.Test" );

     }

     public boolean accept( Class testClass )

     {

         return nonAbstractClassFilter.accept( testClass ) && isValidJUnit3Test( testClass );

     }

     private boolean isValidJUnit3Test( Class testClass )

     {

         return junitClass != null && ( junitClass.isAssignableFrom( testClass ) || isSuiteOnly( testClass ) );

     }

     public boolean isSuiteOnly( Class testClass )

     {

         final Method suite = ReflectionUtils.tryGetMethod( testClass, "suite", EMPTY_CLASS_ARRAY );

         if ( suite != null )

         {

             final int modifiers = suite.getModifiers();

             if ( Modifier.isPublic( modifiers ) && Modifier.isStatic( modifiers ) )

             {

                 return junit.framework.Test.class.isAssignableFrom( suite.getReturnType() );

             }

         }

         return false;

     }

 }