ch.ivyteam.ivy.maven.engine.TestClasspathJar.java Source code

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Here is the source code for ch.ivyteam.ivy.maven.engine.TestClasspathJar.java

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/*
 * Copyright (C) 2016 AXON IVY AG
 *
 * 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 ch.ivyteam.ivy.maven.engine;

import static org.assertj.core.api.Assertions.assertThat;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.file.Files;
import java.util.Arrays;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import org.apache.commons.io.IOUtils;
import org.junit.Test;

import ch.ivyteam.ivy.maven.util.ClasspathJar;

public class TestClasspathJar {

    @Test
    public void readWriteClasspath() throws IOException {
        File jarFile = Files.createTempFile("my", ".jar").toFile();
        ClasspathJar jar = new ClasspathJar(jarFile);
        File content = Files.createTempFile("content", ".jar").toFile();
        jar.createFileEntries(Arrays.asList(content));

        assertThat(jar.getClasspathFiles()).contains(content.getName());

        ZipInputStream jarStream = new ZipInputStream(new FileInputStream(jarFile));
        ZipEntry first = jarStream.getNextEntry();
        assertThat(first.getName()).isEqualTo("META-INF/MANIFEST.MF");
        String manifest = IOUtils.toString(jarStream);
        assertThat(manifest)
                .as("Manifest should not start with a whitespace or it will not be interpreted by the JVM")
                .startsWith("Manifest-Version:");
    }

}