org.renjin.cli.build.TestRun.java Source code

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Here is the source code for org.renjin.cli.build.TestRun.java

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/**
 * Renjin : JVM-based interpreter for the R language for the statistical analysis
 * Copyright  2010-2016 BeDataDriven Groep B.V. and contributors
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, a copy is available at
 * https://www.gnu.org/licenses/gpl-2.0.txt
 */
package org.renjin.cli.build;

import jline.UnsupportedTerminal;
import jline.console.ConsoleReader;
import org.apache.commons.vfs2.FileObject;
import org.renjin.eval.Session;
import org.renjin.eval.SessionBuilder;
import org.renjin.packaging.BuildException;
import org.renjin.primitives.packaging.ClasspathPackageLoader;
import org.renjin.repl.JlineRepl;

import java.io.*;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

/**
 * Runs package tests
 */
public class TestRun {

    private File stagingDir;
    private File testDir;

    private int count;
    private int passedCount;

    public TestRun(File stagingDir, File testDir) {
        this.stagingDir = stagingDir;
        this.testDir = testDir;
    }

    public void execute() {
        for (File testFile : findTestSources(testDir)) {
            count++;
            System.out.print("Running test " + testFile.getName() + "... ");
            System.out.flush();
            boolean passed = executeTest(testFile);
            if (passed) {
                System.out.println("OK");
                passedCount++;
            } else {
                System.out.println("ERROR");
            }
        }

        System.out.println();
        System.out.println(String.format("TEST RESULTS: %d/%d passed.", passedCount, count));
    }

    private List<File> findTestSources(File dir) {
        List<File> testFiles = new ArrayList<File>();
        File[] files = testDir.listFiles();
        if (files != null) {
            for (File file : files) {
                if (file.getName().toUpperCase().endsWith(".R")) {
                    testFiles.add(file);
                }
            }
        }
        Collections.sort(testFiles, new Comparator<File>() {
            @Override
            public int compare(File o1, File o2) {
                return o1.getName().toLowerCase().compareTo(o2.getName().toLowerCase());
            }
        });
        return testFiles;
    }

    private Session newSession() {
        SessionBuilder builder = new SessionBuilder().withDefaultPackages();
        builder.setPackageLoader(createPackageLoader());
        Session session = builder.build();
        session.setWorkingDirectory(resolveTestDir(session));
        return session;
    }

    private FileObject resolveTestDir(Session session) {
        try {
            return session.getFileSystemManager().resolveFile(testDir, ".");
        } catch (Exception e) {
            throw new BuildException("Exception resolving test dir path", e);
        }
    }

    private ClasspathPackageLoader createPackageLoader() {
        try {
            URL packageUnderTestUrl = stagingDir.toURI().toURL();
            URLClassLoader classLoader = new URLClassLoader(new URL[] { packageUnderTestUrl },
                    getClass().getClassLoader());
            return new ClasspathPackageLoader(classLoader);
        } catch (Exception e) {
            throw new BuildException("Exception creating package loader", e);
        }
    }

    private boolean executeTest(File testFile) {

        File outputFile = new File(testFile.getParentFile(), testFile.getName() + "out");
        PrintStream output;
        try {
            output = new PrintStream(outputFile);
        } catch (FileNotFoundException e) {
            throw new BuildException("Couldn't create test output file " + outputFile.getAbsolutePath());
        }

        try {
            Session session = newSession();
            session.setStdOut(new PrintWriter(output));
            session.setStdErr(new PrintWriter(output));

            UnsupportedTerminal term = new UnsupportedTerminal();
            InputStream in = new FileInputStream(testFile);
            ConsoleReader consoleReader = new ConsoleReader(in, output, term);
            JlineRepl repl = new JlineRepl(session, consoleReader);
            repl.setInteractive(false);
            repl.setEcho(true);
            repl.setStopOnError(true);

            repl.run();
            return true;

        } catch (Exception e) {
            e.printStackTrace(output);
            return false;
        }
    }

}