ResourceTraversalTest.java

/*
 * Copyright 2004-2012 the Seasar Foundation and the Others.
 *
 * Licensed 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.
 */
package org.seasar.util.io;

import java.io.File;
import java.io.InputStream;
import java.net.JarURLConnection;
import java.net.URL;
import java.util.zip.ZipInputStream;

import junit.framework.TestCase;

import org.junit.Before;
import org.junit.Test;
import org.seasar.util.jar.JarFileUtil;

import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;

/**
 * @author taedium
 */
public class ResourceTraversalTest {

    private static int count = 0;

    /**
     * @throws Exception
     */
    @Before
    public void setUp() throws Exception {
        count = 0;
    }

    /**
     * @throws Exception
     */
    @Test
    public void testForEachFile() throws Exception {
        final File rootDir = ResourceUtil.getBuildDir(getClass());
        final String path = ResourceUtil.getResourcePath(getClass());
        final int pos = path.lastIndexOf("/");
        final String baseDirectory = path.substring(0, pos);
        ResourceTraversalUtil.forEach(
            rootDir,
            baseDirectory,
            new ResourceHandler() {
                @Override
                public void processResource(String path, InputStream is) {
                    try {
                        if (count < 10) {
                            System.out.println(path);
                        }
                        assertThat(path, is(notNullValue()));
                        assertThat(is, is(notNullValue()));
                        count++;
                    } finally {
                        CloseableUtil.close(is);
                    }
                }
            });
        assertTrue(count > 0);
    }

    /**
     * @throws Exception
     */
    @Test
    public void testForEachJarFile() throws Exception {
        final String classFilePath =
            TestCase.class.getName().replace('.', '/') + ".class";
        final URL classURL = ResourceUtil.getResource(classFilePath);
        final JarURLConnection con =
            (JarURLConnection) classURL.openConnection();
        ResourceTraversalUtil.forEach(con.getJarFile(), new ResourceHandler() {
            @Override
            public void processResource(String path, InputStream is) {
                try {
                    if (count < 10) {
                        System.out.println(path);
                    }
                    System.out.println(path);
                    assertThat(path, is(notNullValue()));
                    assertThat(
                        path,
                        path.startsWith("junit")
                            || path.startsWith("org/junit")
                            || path.startsWith("org/hamcrest")
                            || path.startsWith("META-INF/")
                            || path.equals("LICENSE.txt"),
                        is(true));
                    assertThat(is, is(notNullValue()));
                    count++;
                } finally {
                    CloseableUtil.close(is);
                }
            }
        });
        assertTrue(count > 0);
    }

    /**
     * @throws Exception
     */
    public void testForEachJarFile_withPrefix() throws Exception {
        final String classFilePath =
            TestCase.class.getName().replace('.', '/') + ".class";
        final URL classURL = ResourceUtil.getResource(classFilePath);
        final JarURLConnection con =
            (JarURLConnection) classURL.openConnection();
        ResourceTraversalUtil.forEach(
            con.getJarFile(),
            "junit/",
            new ResourceHandler() {
                @Override
                public void processResource(String path, InputStream is) {
                    try {
                        if (count < 10) {
                            System.out.println(path);
                        }
                        assertThat(path.startsWith("junit"), is(not(true)));
                        assertThat(path, is(notNullValue()));
                        assertThat(is, is(notNullValue()));
                        count++;
                    } finally {
                        CloseableUtil.close(is);
                    }
                }
            });
        assertTrue(count > 0);
    }

    /**
     * @throws Exception
     */
    @Test
    public void testForEachZipInputStream() throws Exception {
        final String classFilePath =
            TestCase.class.getName().replace('.', '/') + ".class";
        final URL classURL = ResourceUtil.getResource(classFilePath);
        URL jarURL =
            new File(JarFileUtil.toJarFilePath(classURL)).toURI().toURL();
        ResourceTraversalUtil.forEach(
            new ZipInputStream(jarURL.openStream()),
            new ResourceHandler() {
                @Override
                public void processResource(String path, InputStream is) {
                    try {
                        if (count < 10) {
                            System.out.println(path);
                        }
                        assertThat(path, is(notNullValue()));
                        assertThat(
                            path,
                            path.startsWith("junit")
                                || path.startsWith("org/junit")
                                || path.startsWith("org/hamcrest")
                                || path.startsWith("META-INF/")
                                || path.equals("LICENSE.txt"),
                            is(true));
                        assertThat(is, is(notNullValue()));
                        count++;
                    } finally {
                        CloseableUtil.close(is);
                    }
                }
            });
        assertTrue(count > 0);
    }

    /**
     * @throws Exception
     */
    @Test
    public void testForEachZipInputStream_withPrefix() throws Exception {
        final String classFilePath =
            TestCase.class.getName().replace('.', '/') + ".class";
        final URL classURL = ResourceUtil.getResource(classFilePath);
        URL jarURL =
            new File(JarFileUtil.toJarFilePath(classURL)).toURI().toURL();
        ResourceTraversalUtil.forEach(
            new ZipInputStream(jarURL.openStream()),
            "junit/",
            new ResourceHandler() {
                @Override
                public void processResource(String path, InputStream is) {
                    try {
                        if (count < 10) {
                            System.out.println(path);
                        }
                        assertThat(path.startsWith("junit"), is(not(true)));
                        assertThat(path, is(notNullValue()));
                        assertThat(is, is(notNullValue()));
                        count++;
                    } finally {
                        CloseableUtil.close(is);
                    }
                }
            });
        assertTrue(count > 0);
    }

}