/*
 *  Copyright (C) 2011 SeqWare
 * 
 *  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 3 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, see <http://www.gnu.org/licenses/>.
 */
package net.sourceforge.seqware.common.util.filetools;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import net.sourceforge.seqware.common.util.Log;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Assert;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

/**
 * <p>
 * FileToolsTest class.
 * </p>
 * 
 * @author boconnor
 * @version $Id: $Id
 * @since 0.13.3
 */
public class FileToolsTest {

    /**
     * <p>
     * Constructor for FileToolsTest.
     * </p>
     */
    public FileToolsTest() {
    }

    /**
     * <p>
     * setUpClass.
     * </p>
     * 
     * @throws java.lang.Exception
     *             if any.
     */
    @BeforeClass
    public static void setUpClass() throws Exception {
    }

    /**
     * <p>
     * tearDownClass.
     * </p>
     * 
     * @throws java.lang.Exception
     *             if any.
     */
    @AfterClass
    public static void tearDownClass() throws Exception {
    }

    /**
     * <p>
     * setUp.
     * </p>
     */
    @Before
    public void setUp() {
    }

    /**
     * <p>
     * tearDown.
     * </p>
     */
    @After
    public void tearDown() {
    }

    /**
     * 
     * @throws IOException
     */
    @Test
    public void testSEQWARE1410() throws IOException {
        // test on SymLinkNullPointer
        try {
            File sudoersFile = new File("/etc/sudoers");
            if (!sudoersFile.exists()) {
                Log.fatal("Could not test FileTools on file where we have no read rights");
            }
            ArrayList<File> files = new ArrayList<>();
            FileTools.listFilesRecursive(sudoersFile, files);
        } catch (Exception e) {
            Assert.assertTrue("Did not avoid crash when listing file with no read permissions", false);
        }
    }

    /**
     * <p>
     * testIsFileOwner.
     * </p>
     * 
     * @throws java.lang.Exception
     *             if any.
     */
    @Test
    public void testIsFileOwner() throws Exception {

        String path = FileToolsTest.class.getResource("FileToolsTest.txt").getPath();
        boolean isOwner = FileTools.isFileOwner(path);
        assertTrue(isOwner);

        // don't do this if you are root for some reason
        if (!"root".equals(System.getProperty("user.name"))) {
            // assumes the root filesystem is owned by
            isOwner = FileTools.isFileOwner(File.separator);
            assertFalse(isOwner);
        }
    }

    /**
     * <p>
     * testIsFileOwner.
     * </p>
     * 
     * @throws java.lang.Exception
     *             if any.
     */
    @Test
    public void testWhoAmI() throws Exception {

        // you can override this but I'm guessing people won't for testing
        String username = System.getProperty("user.name");

        assertEquals(username, FileTools.whoAmI());

    }

    /**
     * <p>
     * testGetFilename.
     * </p>
     * 
     * @throws java.lang.Exception
     *             if any.
     */
    @Test
    public void testGetFilename() throws Exception {

        String filename = "/foo/bar/jar.txt";
        assertEquals("jar.txt", FileTools.getFilename(filename));

    }

    /**
     * Test conks out on Jenkins. Possibly, file permissions are handled differently there. However, since we no longer die on incorrect
     * file permissions, this is a bit less important.
     * 
     * @Test public void testOwnership() throws Exception{ File tempFile = File.createTempFile("test", "test"); String
     *       determineFilePermissions = FileTools.determineFilePermissions(tempFile.getAbsolutePath());
     *       Assert.assertTrue("incorrect file permissions", determineFilePermissions.equals("-rw-rw-r--"));
     * 
     *       // create a "settings file" and then check to see if its permissions are correct tempFile.setExecutable(false, false);
     *       tempFile.setWritable(false, false); tempFile.setWritable(true, true); tempFile.setReadable(false, false);
     *       tempFile.setReadable(true, true); System.setProperty(SEQWARE_SETTINGS_PROPERTY, tempFile.getPath());
     * 
     *       String settingPerms = FileTools.determineFilePermissions(ConfigTools.getSettingsFilePath());
     *       Assert.assertTrue("incorrect file permissions", settingPerms.equals("-rw-------")); tempFile.deleteOnExit(); }
     **/
}