content: /*******************************************************************************
   * Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *    Marc R. Hoffmann - initial API and implementation
   *    
   *******************************************************************************/
  package org.jacoco.report;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertNull;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.OutputStreamWriter;
  import java.io.Reader;
  import java.io.Writer;
  
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  
  /**
   * Unit tests for {@link DirectorySourceFileLocator}.
   */
  public class DirectorySourceFileLocatorTest {
  
  	@Rule
  	public final TemporaryFolder sourceFolder = new TemporaryFolder();
  
  	private ISourceFileLocator locator;
  
  	@Before
  	public void setup() {
  		locator = new DirectorySourceFileLocator(sourceFolder.getRoot(),
  				"UTF-8", 4);
  	}
  
  	@Test
  	public void testGetSourceFileNegative() throws IOException {
  		assertNull(locator.getSourceFile("org/jacoco/example",
  				"DoesNotExist.java"));
  	}
  
  	@Test
  	public void testGetSourceFile() throws IOException {
  		createFile("org/jacoco/example/Test.java");
  		final Reader source = locator.getSourceFile("org/jacoco/example",
  				"Test.java");
  		assertContent(source);
  	}
  
  	private void createFile(String path) throws IOException {
  		final File file = new File(sourceFolder.getRoot(), path);
  		file.getParentFile().mkdirs();
  		final Writer writer = new OutputStreamWriter(
  				new FileOutputStream(file), "UTF-8");
  		writer.write("Source");
  		writer.close();
  	}
  
  	private void assertContent(Reader source) throws IOException {
  		assertNotNull(source);
  		final BufferedReader buffer = new BufferedReader(source);
  		assertEquals("Source", buffer.readLine());
  		assertNull(buffer.readLine());
  		buffer.close();
  	}
  
  }
  