org.sonar.api.utils.ManifestUtilsTest.java Source code

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Here is the source code for org.sonar.api.utils.ManifestUtilsTest.java

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/*
 * Sonar, open source software quality management tool.
 * Copyright (C) 2008-2012 SonarSource
 * mailto:contact AT sonarsource DOT com
 *
 * Sonar is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * Sonar 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Sonar; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.api.utils;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.net.URLClassLoader;
import java.util.List;
import java.util.jar.Attributes;
import java.util.jar.JarOutputStream;
import java.util.jar.Manifest;

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import static org.junit.internal.matchers.IsCollectionContaining.hasItem;
import static org.junit.matchers.JUnitMatchers.hasItems;

public class ManifestUtilsTest {

    @Rule
    public TemporaryFolder tempDir = new TemporaryFolder();

    @Test
    public void emptyManifest() throws Exception {
        Manifest mf = new Manifest();
        File jar = createJar(mf, "emptyManifest.jar");

        URLClassLoader classloader = new URLClassLoader(FileUtils.toURLs(new File[] { jar }));
        assertThat(ManifestUtils.getPropertyValues(classloader, "foo").size(), is(0));
    }

    @Test
    public void singleManifest() throws Exception {
        Manifest mf = new Manifest();
        mf.getMainAttributes().putValue("foo", "bar");
        mf.getMainAttributes().putValue("other", "value");
        File jar = createJar(mf, "singleManifest.jar");

        URLClassLoader classloader = new URLClassLoader(FileUtils.toURLs(new File[] { jar }));
        List<String> values = ManifestUtils.getPropertyValues(classloader, "foo");
        assertThat(values.size(), is(1));
        assertThat(values, hasItem("bar"));
    }

    @Test
    public void manyManifests() throws Exception {
        Manifest mf1 = new Manifest();
        mf1.getMainAttributes().putValue("foo", "bar");
        File jar1 = createJar(mf1, "manyManifests-one.jar");

        Manifest mf2 = new Manifest();
        mf2.getMainAttributes().putValue("foo", "otherbar");
        File jar2 = createJar(mf2, "manyManifests-two.jar");

        URLClassLoader classloader = new URLClassLoader(FileUtils.toURLs(new File[] { jar1, jar2 }));
        List<String> values = ManifestUtils.getPropertyValues(classloader, "foo");
        assertThat(values.size(), is(2));
        assertThat(values, hasItems("bar", "otherbar"));
    }

    private File createJar(Manifest mf, String name) throws Exception {
        mf.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");
        File file = tempDir.newFile(name);
        OutputStream out = new JarOutputStream(new FileOutputStream(file), mf);
        out.flush();
        IOUtils.closeQuietly(out);
        return file;
    }
}