ClassTraversalTest.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.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 org.seasar.util.lang.ClassUtil;

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

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

    private static int count = 0;

    /**
     * @throws Exception
     */
    @Before
    public void setUp() throws Exception {
        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();
        ClassTraversalUtil.forEach(con.getJarFile(), new ClassHandler() {
            @Override
            public void processClass(String packageName, String shortClassName) {
                if (count < 10) {
                    System.out.println(ClassUtil.concatName(
                        packageName,
                        shortClassName));
                }
                assertThat(packageName, is(notNullValue()));
                assertThat(shortClassName, is(notNullValue()));
                assertThat(
                    packageName,
                    packageName.startsWith("junit")
                        || packageName.startsWith("org.junit")
                        || packageName.startsWith("org.hamcrest"),
                    is(true));
                count++;
            }
        });
        assertTrue(count > 0);
    }

    /**
     * @throws Exception
     */
    @Test
    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();
        ClassTraversalUtil.forEach(
            con.getJarFile(),
            "junit/",
            new ClassHandler() {
                @Override
                public void processClass(String packageName,
                        String shortClassName) {
                    if (count < 10) {
                        System.out.println(ClassUtil.concatName(
                            packageName,
                            shortClassName));
                    }
                    assertThat(packageName, is(notNullValue()));
                    assertThat(shortClassName, is(notNullValue()));
                    assertThat(
                        packageName.startsWith("junit")
                            || packageName.startsWith("org.junit"),
                        is(not(true)));
                    count++;
                }
            });
        assertTrue(count > 0);
    }

    /**
     * @throws Exception
     */
    @Test
    public void testForEachZipInputStream() throws Exception {
        String classFilePath =
            TestCase.class.getName().replace('.', '/') + ".class";
        URL classURL = ResourceUtil.getResource(classFilePath);
        URL jarURL =
            new File(JarFileUtil.toJarFilePath(classURL)).toURI().toURL();
        ClassTraversalUtil.forEach(
            new ZipInputStream(jarURL.openStream()),
            new ClassHandler() {
                @Override
                public void processClass(String packageName,
                        String shortClassName) {
                    if (count < 10) {
                        System.out.println(ClassUtil.concatName(
                            packageName,
                            shortClassName));
                    }
                    assertThat(packageName, is(notNullValue()));
                    assertThat(shortClassName, is(notNullValue()));
                    assertThat(
                        packageName,
                        packageName.startsWith("junit")
                            || packageName.startsWith("org.junit")
                            || packageName.startsWith("org.hamcrest"),
                        is(true));
                    count++;
                }
            });
        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();
        ClassTraversalUtil.forEach(
            new ZipInputStream(jarURL.openStream()),
            "junit/",
            new ClassHandler() {
                @Override
                public void processClass(String packageName,
                        String shortClassName) {
                    if (count < 10) {
                        System.out.println(ClassUtil.concatName(
                            packageName,
                            shortClassName));
                    }
                    assertThat(packageName, is(notNullValue()));
                    assertThat(shortClassName, is(notNullValue()));
                    assertThat(
                        packageName.startsWith("junit")
                            || packageName.startsWith("org.junit"),
                        is(not(true)));
                    count++;
                }
            });
        assertTrue(count > 0);
    }

}