maven-wrapper/src/test/java/org/apache/maven/wrapper/DownloaderTest.java

package org.apache.maven.wrapper;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.net.URI;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

import org.junit.Before;
import org.junit.Test;

public class DownloaderTest
{

  private DefaultDownloader download;

  private Path testDir;

  private Path downloadFile;

  private Path rootDir;

  private URI sourceRoot;

  private Path remoteFile;

  @Before
  public void setUp()
    throws Exception
  {
    download = new DefaultDownloader( "mvnw", "aVersion" );
    testDir = Paths.get( "target/test-files/DownloadTest" );
    Files.createDirectories( testDir );
    rootDir = testDir.resolve( "root" );
    downloadFile = rootDir.resolve( "file" );
    Files.deleteIfExists( downloadFile );
    remoteFile = testDir.resolve( "remoteFile" );
    try ( BufferedWriter writer = Files.newBufferedWriter( remoteFile, StandardCharsets.UTF_8 ) )
    {
      writer.write( "sometext" );
    }
    sourceRoot = remoteFile.toUri();
  }

  @Test
  public void testDownload()
    throws Exception
  {
    assertTrue( Files.notExists( downloadFile ) );
    download.download( sourceRoot, downloadFile );
    assertTrue( Files.exists( downloadFile ) );
    try ( BufferedReader reader = Files.newBufferedReader( downloadFile, StandardCharsets.UTF_8 ) )
    {
      assertEquals( "sometext", reader.readLine() );
    }
  }
}