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.core.tools;
  
  import static org.junit.Assert.assertEquals;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.FileWriter;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.util.List;
  
  import org.jacoco.core.data.ExecutionData;
  import org.jacoco.core.data.ExecutionDataReader;
  import org.jacoco.core.data.ExecutionDataStore;
  import org.jacoco.core.data.ExecutionDataWriter;
  import org.jacoco.core.data.SessionInfo;
  import org.jacoco.core.data.SessionInfoStore;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  
  /**
   * Unit tests for {@link ExecFileLoader}.
   */
  public class ExecFileLoaderTest {
  
  	@Rule
  	public final TemporaryFolder sourceFolder = new TemporaryFolder();
  
  	private ExecFileLoader loader;
  
  	@Before
  	public void setup() {
  		loader = new ExecFileLoader();
  	}
  
  	@Test
  	public void testLoadFile() throws IOException {
  		loader.load(createFile("a"));
  		loader.load(createFile("bb"));
  
  		assertLoaderContents("a", "bb");
  	}
  
  	@Test
  	public void testLoadInputStream() throws IOException {
  		final FileInputStream in1 = new FileInputStream(createFile("a"));
  		loader.load(in1);
  		in1.close();
  		final FileInputStream in2 = new FileInputStream(createFile("bb"));
  		loader.load(in2);
  		in2.close();
  
  		assertLoaderContents("a", "bb");
  	}
  
  	@Test(expected = IOException.class)
  	public void testLoadBrokenContent() throws IOException {
  		final File file = new File(sourceFolder.getRoot(), "broken.exec");
  		final FileWriter writer = new FileWriter(file);
  		writer.write("Invalid Content");
  		writer.close();
  
  		loader.load(file);
  	}
  
  	@Test
  	public void testSaveFile() throws IOException {
  		final File file = new File(sourceFolder.getRoot(), "target.exec");
  
  		// Write invalid data to ensure the file is actually overwritten:
  		final OutputStream out = new FileOutputStream(file);
  		out.write("invalid".getBytes());
  		out.close();
  
  		loader.load(createFile("a"));
  		loader.save(file, false);
  
  		assertFileContents(file, "a");
  	}
  
  	@Test
  	public void testSaveFileAppend() throws IOException {
  		final File file = createFile("a");
  
  		loader.load(createFile("bb"));
  		loader.save(file, true);
  
  		assertFileContents(file, "a", "bb");
  	}
  
  	@Test
  	public void testCreateSubfolders() throws IOException {
  		final File file = new File(sourceFolder.getRoot(), "a/b/c/target.exec");
  
  		loader.load(createFile("a"));
  		loader.save(file, true);
  
  		assertFileContents(file, "a");
  	}
  
  	private File createFile(String id) throws IOException {
  		final File file = new File(sourceFolder.getRoot(), id + ".exec");
  		final FileOutputStream out = new FileOutputStream(file);
  		final ExecutionDataWriter writer = new ExecutionDataWriter(out);
  		final int value = id.length();
  		writer.visitClassExecution(new ExecutionData(value, id,
  				new boolean[] { true }));
  		writer.visitSessionInfo(new SessionInfo(id, value, value));
  		out.close();
  		return file;
  	}
  
  	private void assertLoaderContents(String... expected) {
  		assertContents(loader.getExecutionDataStore(),
  				loader.getSessionInfoStore(), expected);
  	}
  
  	private void assertFileContents(File file, String... expected)
  			throws IOException {
  		final InputStream in = new FileInputStream(file);
  		final ExecutionDataStore execStore = new ExecutionDataStore();
  		final SessionInfoStore sessionStore = new SessionInfoStore();
  		final ExecutionDataReader reader = new ExecutionDataReader(in);
  		reader.setExecutionDataVisitor(execStore);
  		reader.setSessionInfoVisitor(sessionStore);
  		reader.read();
  		assertContents(execStore, sessionStore, expected);
  	}
  
  	private void assertContents(ExecutionDataStore execStore,
  			SessionInfoStore sessionStore, String... expected) {
  		final List<SessionInfo> infos = sessionStore.getInfos();
  
  		assertEquals(expected.length, execStore.getContents().size());
  		assertEquals(expected.length, infos.size());
  		int idx = 0;
  		for (String id : expected) {
  			assertEquals(id, execStore.get(id.length()).getName());
  			assertEquals(id, infos.get(idx++).getId());
  		}
  	}
  
  }
  