org.evosuite.SystemTest.java Source code

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Here is the source code for org.evosuite.SystemTest.java

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/**
 * Copyright (C) 2011,2012 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 * 
 * This file is part of EvoSuite.
 * 
 * EvoSuite is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 * 
 * EvoSuite 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 Public License for more details.
 * 
 * You should have received a copy of the GNU Public License along with
 * EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
package org.evosuite;

import java.io.File;
import java.io.IOException;
import java.util.List;

import org.evosuite.Properties.Criterion;
import org.evosuite.Properties.StatisticsBackend;
import org.evosuite.Properties.StoppingCondition;
import org.evosuite.ga.GeneticAlgorithm;
import org.evosuite.reset.ResetManager;
import org.evosuite.result.TestGenerationResult;
import org.evosuite.utils.Randomness;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;

/**
 * @author Andrea Arcuri
 * 
 */
public class SystemTest {

    public static final String ALREADY_SETUP = "systemtest.alreadysetup";

    private static java.util.Properties currentProperties;

    static {
        String s = System.getProperty(ALREADY_SETUP);
        if (s == null) {
            System.setProperty(ALREADY_SETUP, ALREADY_SETUP);
            runSetup();
        }
    }

    @After
    public void resetStaticVariables() {
        TestGenerationContext.getInstance().resetContext();
        ResetManager.getInstance().clearManager();
        System.setProperties(currentProperties);
        Properties.getInstance().resetToDefaults();
    }

    @Before
    public void setDefaultPropertiesForTestCases() {

        ClientProcess.geneticAlgorithmStatus = null;

        Properties.getInstance().resetToDefaults();

        Properties.HTML = false;
        Properties.SHOW_PROGRESS = false;
        Properties.SERIALIZE_RESULT = false;
        Properties.JUNIT_TESTS = false;
        Properties.PLOT = false;

        Properties.STOPPING_CONDITION = StoppingCondition.MAXSTATEMENTS;
        Properties.SEARCH_BUDGET = 10000;

        Properties.GLOBAL_TIMEOUT = 120;
        Properties.MINIMIZATION_TIMEOUT = 8;
        Properties.EXTRA_TIMEOUT = 2;

        Properties.ENABLE_ASSERTS_FOR_EVOSUITE = true;
        Properties.CLIENT_ON_THREAD = true;
        Properties.SANDBOX = false;
        Properties.ERROR_BRANCHES = false;
        Properties.CRITERION = Criterion.BRANCH;

        Properties.NEW_STATISTICS = true;
        Properties.OLD_STATISTICS = false;
        Properties.STATISTICS_BACKEND = StatisticsBackend.DEBUG;

        TestGenerationContext.getInstance().resetContext();
        ResetManager.getInstance().clearManager();
        Randomness.setSeed(42);

        currentProperties = (java.util.Properties) System.getProperties().clone();
    }

    /*
     * this static variable is a safety net to be sure it is called only once. 
     * static variables are shared and not re-initialized
     * during a sequence of test cases.
     */
    private static boolean hasBeenAlreadyRun = false;

    private static void runSetup() {
        if (hasBeenAlreadyRun) {
            return;
        }

        deleteEvoDirs();

        System.out.println("*** SystemTest: runSetup() ***");

        String target = System.getProperty("user.dir") + File.separator + "target" + File.separator
                + "test-classes";

        File targetDir = new File(target);
        try {
            Assert.assertTrue("Target directory does not exist: " + targetDir.getCanonicalPath(),
                    targetDir.exists());
        } catch (IOException e) {
            Assert.fail(e.getMessage());
        }
        Assert.assertTrue(targetDir.isDirectory());

        EvoSuite evosuite = new EvoSuite();
        String[] command = new String[] { "-setup", target };

        Object result = evosuite.parseCommandLine(command);
        Assert.assertNull(result);
        File evoProp = new File(Properties.OUTPUT_DIR + File.separator + "evosuite.properties");
        Assert.assertTrue("It was not created: " + evoProp.getAbsolutePath(), evoProp.exists());

        hasBeenAlreadyRun = true;
    }

    private static void deleteEvoDirs() {

        System.out.println("*** SystemTest: deleteEvoDirs() ***");

        try {
            org.apache.commons.io.FileUtils.deleteDirectory(new File("evosuite-files"));
            org.apache.commons.io.FileUtils.deleteDirectory(new File("evosuite-report"));
            org.apache.commons.io.FileUtils.deleteDirectory(new File("evosuite-tests"));
        } catch (IOException e) {
            Assert.fail(e.getMessage());
        }
        hasBeenAlreadyRun = false;
    }

    @SuppressWarnings("unchecked")
    protected GeneticAlgorithm<?> getGAFromResult(Object result) {
        assert (result instanceof List);
        List<TestGenerationResult> results = (List<TestGenerationResult>) result;
        assert (results.size() == 1);
        return results.iterator().next().getGeneticAlgorithm();
    }
}