com.retroduction.carma.resolvers.util.TestCaseInstantiationVerifier.java Source code

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Here is the source code for com.retroduction.carma.resolvers.util.TestCaseInstantiationVerifier.java

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/**
  *  This file is part of Carma (Retroduction.org).
  *
  *  Carma is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation, either version 3 of the License, or
  *  (at your option) any later version.
  *
  *  Carma 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 General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with Carma.  If not, see <http://www.gnu.org/licenses/>.
  *
  * Copyright Retroduction.org (c) 2007-2010
  */

package com.retroduction.carma.resolvers.util;

import java.io.File;
import java.lang.reflect.Modifier;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.HashSet;
import java.util.Set;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.retroduction.carma.core.api.testrunners.ITestCaseInstantiationVerifier;

public class TestCaseInstantiationVerifier implements ITestCaseInstantiationVerifier {

    private Log log = LogFactory.getLog(TestCaseInstantiationVerifier.class);

    private Set<File> classPath;

    private Set<File> testClassPath;

    private Set<URL> dependencyClassPath;

    private URLClassLoader loader;

    private void reinitPrivateClassLoader() {

        Set<File> combinedClassPathSet = new HashSet<File>();

        if (this.getClassPath() != null) {
            combinedClassPathSet.addAll(this.getClassPath());
        }

        if (this.getTestClassPath() != null) {
            combinedClassPathSet.addAll(this.getTestClassPath());
        }

        if (this.getDependencyClassPath() != null) {

            for (URL url : this.getDependencyClassPath()) {
                File file = new File(url.getFile());
                combinedClassPathSet.add(file);
            }

        }

        Set<URL> validURLs = this.filterInvalidURLs(combinedClassPathSet);

        this.setLoader(new URLClassLoader(validURLs.toArray(new URL[0]), this.getClass().getClassLoader()));
    }

    Set<URL> filterInvalidURLs(Set<File> classPathEntries) {

        Set<URL> result = new HashSet<URL>();

        if (classPathEntries != null) {
            for (File file : classPathEntries) {
                if (file != null) {
                    try {
                        result.add(file.toURL());
                    } catch (MalformedURLException e) {
                        this.log.warn("Invalid class path entry: " + file.toString());
                    }
                }
            }
        }
        return result;
    }

    private URLClassLoader getLoader() {
        return this.loader;
    }

    private void setLoader(URLClassLoader loader) {
        this.loader = loader;
    }

    private Set<File> getClassPath() {
        return this.classPath;
    }

    public void setClassPath(Set<File> classesPath) {
        this.classPath = classesPath;
        this.reinitPrivateClassLoader();
    }

    private Set<File> getTestClassPath() {
        return this.testClassPath;
    }

    public void setTestClassPath(Set<File> testClassesPath) {
        this.testClassPath = testClassesPath;
        this.reinitPrivateClassLoader();
    }

    public void setDependencyClassPath(Set<URL> dependencyClassPath) {
        this.dependencyClassPath = dependencyClassPath;
        this.reinitPrivateClassLoader();
    }

    private Set<URL> getDependencyClassPath() {
        return dependencyClassPath;
    }

    public HashSet<String> determineUnloadableTestClassNames(Set<String> fqTestClassNames) {

        HashSet<String> unloadableClasses = new HashSet<String>();

        for (String testClassName : fqTestClassNames) {

            try {

                Class<?> testClass = this.getLoader().loadClass(testClassName);

                if (Modifier.isAbstract(testClass.getModifiers())
                        || Modifier.isInterface(testClass.getModifiers())) {
                    this.log.info("Skipping abstract class or interface in test set:" + testClassName);
                    unloadableClasses.add(testClassName);
                    continue;
                }

            } catch (Exception e) {
                this.log.warn("Skipping class in test set due to class loading problem:" + testClassName);
                this.log.debug(e);
                unloadableClasses.add(testClassName);
                continue;
            } catch (NoClassDefFoundError e) {
                this.log.warn("Skipping class in test set due to class loading problem:" + testClassName);
                this.log.debug(e);
                unloadableClasses.add(testClassName);
                continue;
            }

        }

        return unloadableClasses;
    }

}