org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/FileBasedConfigTest.java - jgit - Git at Google

 /*
  * Copyright (C) 2012, Marc Strapetz
  * and other copyright owners as documented in the project's IP log.
  *
  * This program and the accompanying materials are made available
  * under the terms of the Eclipse Distribution License v1.0 which
  * accompanies this distribution, is reproduced below, and is
  * available at http://www.eclipse.org/org/documents/edl-v10.php
  *
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or
  * without modification, are permitted provided that the following
  * conditions are met:
  *
  * - Redistributions of source code must retain the above copyright
  *   notice, this list of conditions and the following disclaimer.
  *
  * - Redistributions in binary form must reproduce the above
  *   copyright notice, this list of conditions and the following
  *   disclaimer in the documentation and/or other materials provided
  *   with the distribution.
  *
  * - Neither the name of the Eclipse Foundation, Inc. nor the
  *   names of its contributors may be used to endorse or promote
  *   products derived from this software without specific prior
  *   written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 package org.eclipse.jgit.storage.file;

 import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.util.FileUtils.pathToString;
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;

 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
 import java.util.StringTokenizer;

 import org.eclipse.jgit.errors.ConfigInvalidException;
 import org.eclipse.jgit.util.FS;
 import org.eclipse.jgit.util.FileUtils;
 import org.eclipse.jgit.util.IO;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;

 public class FileBasedConfigTest {

 	private static final String USER = "user";

 	private static final String NAME = "name";

 	private static final String EMAIL = "email";

 	private static final String ALICE = "Alice";

 	private static final String BOB = "Bob";

 	private static final String ALICE_EMAIL = "alice@home";

 	private static final String CONTENT1 = "[" + USER + "]\n\t" + NAME + " = "
 			+ ALICE + "\n";

 	private static final String CONTENT2 = "[" + USER + "]\n\t" + NAME + " = "
 			+ BOB + "\n";

 	private static final String CONTENT3 = "[" + USER + "]\n\t" + NAME + " = "
 			+ ALICE + "\n" + "[" + USER + "]\n\t" + EMAIL + " = " + ALICE_EMAIL;

 	private Path trash;

 	@Before
 	public void setUp() throws Exception {
 		trash = Files.createTempDirectory("tmp_");
 		FS.getFileStoreAttributes(trash.getParent());
 	}

 	@After
 	public void tearDown() throws Exception {
 		FileUtils.delete(trash.toFile(),
 				FileUtils.RECURSIVE | FileUtils.SKIP_MISSING | FileUtils.RETRY);
 	}

 	@Test
 	public void testSystemEncoding() throws IOException, ConfigInvalidException {
 		final Path file = createFile(CONTENT1.getBytes(UTF_8));
 		final FileBasedConfig config = new FileBasedConfig(file.toFile(),
 				FS.DETECTED);
 		config.load();
 		assertEquals(ALICE, config.getString(USER, null, NAME));

 		config.setString(USER, null, NAME, BOB);
 		config.save();
 		assertArrayEquals(CONTENT2.getBytes(UTF_8), IO.readFully(file.toFile()));
 	}

 	@Test
 	public void testUTF8withoutBOM() throws IOException, ConfigInvalidException {
 		final Path file = createFile(CONTENT1.getBytes(UTF_8));
 		final FileBasedConfig config = new FileBasedConfig(file.toFile(),
 				FS.DETECTED);
 		config.load();
 		assertEquals(ALICE, config.getString(USER, null, NAME));

 		config.setString(USER, null, NAME, BOB);
 		config.save();
 		assertArrayEquals(CONTENT2.getBytes(UTF_8), IO.readFully(file.toFile()));
 	}

 	@Test
 	public void testUTF8withBOM() throws IOException, ConfigInvalidException {
 		final ByteArrayOutputStream bos1 = new ByteArrayOutputStream();
 		bos1.write(0xEF);
 		bos1.write(0xBB);
 		bos1.write(0xBF);
 		bos1.write(CONTENT1.getBytes(UTF_8));

 		final Path file = createFile(bos1.toByteArray());
 		final FileBasedConfig config = new FileBasedConfig(file.toFile(),
 				FS.DETECTED);
 		config.load();
 		assertEquals(ALICE, config.getString(USER, null, NAME));

 		config.setString(USER, null, NAME, BOB);
 		config.save();

 		final ByteArrayOutputStream bos2 = new ByteArrayOutputStream();
 		bos2.write(0xEF);
 		bos2.write(0xBB);
 		bos2.write(0xBF);
 		bos2.write(CONTENT2.getBytes(UTF_8));
 		assertArrayEquals(bos2.toByteArray(), IO.readFully(file.toFile()));
 	}

 	@Test
 	public void testLeadingWhitespaces() throws IOException, ConfigInvalidException {
 		final ByteArrayOutputStream bos1 = new ByteArrayOutputStream();
 		bos1.write(" \n\t".getBytes(UTF_8));
 		bos1.write(CONTENT1.getBytes(UTF_8));

 		final Path file = createFile(bos1.toByteArray());
 		final FileBasedConfig config = new FileBasedConfig(file.toFile(),
 				FS.DETECTED);
 		config.load();
 		assertEquals(ALICE, config.getString(USER, null, NAME));

 		config.setString(USER, null, NAME, BOB);
 		config.save();

 		final ByteArrayOutputStream bos2 = new ByteArrayOutputStream();
 		bos2.write(" \n\t".getBytes(UTF_8));
 		bos2.write(CONTENT2.getBytes(UTF_8));
 		assertArrayEquals(bos2.toByteArray(), IO.readFully(file.toFile()));
 	}

 	@Test
 	public void testIncludeAbsolute()
 			throws IOException, ConfigInvalidException {
 		final Path includedFile = createFile(CONTENT1.getBytes(UTF_8));
 		final ByteArrayOutputStream bos = new ByteArrayOutputStream();
 		bos.write("[include]\npath=".getBytes(UTF_8));
 		bos.write(pathToString(includedFile.toFile()).getBytes(UTF_8));

 		final Path file = createFile(bos.toByteArray());
 		final FileBasedConfig config = new FileBasedConfig(file.toFile(),
 				FS.DETECTED);
 		config.load();
 		assertEquals(ALICE, config.getString(USER, null, NAME));
 	}

 	@Test
 	public void testIncludeRelativeDot()
 			throws IOException, ConfigInvalidException {
 		final Path includedFile = createFile(CONTENT1.getBytes(UTF_8), "dir1");
 		final ByteArrayOutputStream bos = new ByteArrayOutputStream();
 		bos.write("[include]\npath=".getBytes(UTF_8));
 		bos.write(("./" + includedFile.getFileName()).getBytes(UTF_8));

 		final Path file = createFile(bos.toByteArray(), "dir1");
 		final FileBasedConfig config = new FileBasedConfig(file.toFile(),
 				FS.DETECTED);
 		config.load();
 		assertEquals(ALICE, config.getString(USER, null, NAME));
 	}

 	@Test
 	public void testIncludeRelativeDotDot()
 			throws IOException, ConfigInvalidException {
 		final Path includedFile = createFile(CONTENT1.getBytes(UTF_8), "dir1");
 		final ByteArrayOutputStream bos = new ByteArrayOutputStream();
 		bos.write("[include]\npath=".getBytes(UTF_8));
 		bos.write(("../" + includedFile.getParent().getFileName() + "/"
 				+ includedFile.getFileName()).getBytes(UTF_8));

 		final Path file = createFile(bos.toByteArray(), "dir2");
 		final FileBasedConfig config = new FileBasedConfig(file.toFile(),
 				FS.DETECTED);
 		config.load();
 		assertEquals(ALICE, config.getString(USER, null, NAME));
 	}

 	@Test
 	public void testIncludeRelativeDotDotNotFound()
 			throws IOException, ConfigInvalidException {
 		final Path includedFile = createFile(CONTENT1.getBytes(UTF_8));
 		final ByteArrayOutputStream bos = new ByteArrayOutputStream();
 		bos.write("[include]\npath=".getBytes(UTF_8));
 		bos.write(("../" + includedFile.getFileName()).getBytes(UTF_8));

 		final Path file = createFile(bos.toByteArray());
 		final FileBasedConfig config = new FileBasedConfig(file.toFile(),
 				FS.DETECTED);
 		config.load();
 		assertEquals(null, config.getString(USER, null, NAME));
 	}

 	@Test
 	public void testIncludeWithTilde()
 			throws IOException, ConfigInvalidException {
 		final Path includedFile = createFile(CONTENT1.getBytes(UTF_8), "home");
 		final ByteArrayOutputStream bos = new ByteArrayOutputStream();
 		bos.write("[include]\npath=".getBytes(UTF_8));
 		bos.write(("~/" + includedFile.getFileName()).getBytes(UTF_8));

 		final Path file = createFile(bos.toByteArray(), "repo");
 		final FS fs = FS.DETECTED.newInstance();
 		fs.setUserHome(includedFile.getParent().toFile());

 		final FileBasedConfig config = new FileBasedConfig(file.toFile(), fs);
 		config.load();
 		assertEquals(ALICE, config.getString(USER, null, NAME));
 	}

 	@Test
 	public void testIncludeDontInlineIncludedLinesOnSave()
 			throws IOException, ConfigInvalidException {
 		// use a content with multiple sections and multiple key/value pairs
 		// because code for first line works different than for subsequent lines
 		final Path includedFile = createFile(CONTENT3.getBytes(UTF_8), "dir1");

 		final Path file = createFile(new byte[0], "dir2");
 		FileBasedConfig config = new FileBasedConfig(file.toFile(),
 				FS.DETECTED);
 		config.setString("include", null, "path",
 				("../" + includedFile.getParent().getFileName() + "/"
 						+ includedFile.getFileName()));

 		// just by setting the include.path, it won't be included
 		assertEquals(null, config.getString(USER, null, NAME));
 		assertEquals(null, config.getString(USER, null, EMAIL));
 		config.save();

 		// and it won't be included after saving
 		assertEquals(null, config.getString(USER, null, NAME));
 		assertEquals(null, config.getString(USER, null, EMAIL));

 		final String expectedText = config.toText();
 		assertEquals(2,
 				new StringTokenizer(expectedText, "\n", false).countTokens());

 		config = new FileBasedConfig(file.toFile(), FS.DETECTED);
 		config.load();

 		String actualText = config.toText();
 		assertEquals(expectedText, actualText);
 		// but it will be included after (re)loading
 		assertEquals(ALICE, config.getString(USER, null, NAME));
 		assertEquals(ALICE_EMAIL, config.getString(USER, null, EMAIL));

 		config.save();

 		actualText = config.toText();
 		assertEquals(expectedText, actualText);
 		// and of course preserved after saving
 		assertEquals(ALICE, config.getString(USER, null, NAME));
 		assertEquals(ALICE_EMAIL, config.getString(USER, null, EMAIL));
 	}

 	private Path createFile(byte[] content) throws IOException {
 		return createFile(content, null);
 	}

 	private Path createFile(byte[] content, String subdir) throws IOException {
 		Path dir = subdir != null ? trash.resolve(subdir) : trash;
 		Files.createDirectories(dir);

 		Path f = Files.createTempFile(dir, getClass().getName(), null);
 		try (OutputStream os = Files.newOutputStream(f,
 				StandardOpenOption.APPEND)) {
 			os.write(content);
 		}
 		return f;
 	}
 }
	/*
	* Copyright (C) 2012, Marc Strapetz
	* and other copyright owners as documented in the project's IP log.
	*
	* This program and the accompanying materials are made available
	* under the terms of the Eclipse Distribution License v1.0 which
	* accompanies this distribution, is reproduced below, and is
	* available at http://www.eclipse.org/org/documents/edl-v10.php
	*
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or
	* without modification, are permitted provided that the following
	* conditions are met:
	*
	* - Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	*
	* - Redistributions in binary form must reproduce the above
	* copyright notice, this list of conditions and the following
	* disclaimer in the documentation and/or other materials provided
	* with the distribution.
	*
	* - Neither the name of the Eclipse Foundation, Inc. nor the
	* names of its contributors may be used to endorse or promote
	* products derived from this software without specific prior
	* written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
	* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/
	package org.eclipse.jgit.storage.file;

	import static java.nio.charset.StandardCharsets.UTF_8;
	import static org.eclipse.jgit.util.FileUtils.pathToString;
	import static org.junit.Assert.assertArrayEquals;
	import static org.junit.Assert.assertEquals;

	import java.io.ByteArrayOutputStream;
	import java.io.IOException;
	import java.io.OutputStream;
	import java.nio.file.Files;
	import java.nio.file.Path;
	import java.nio.file.StandardOpenOption;
	import java.util.StringTokenizer;

	import org.eclipse.jgit.errors.ConfigInvalidException;
	import org.eclipse.jgit.util.FS;
	import org.eclipse.jgit.util.FileUtils;
	import org.eclipse.jgit.util.IO;
	import org.junit.After;
	import org.junit.Before;
	import org.junit.Test;

	public class FileBasedConfigTest {

	private static final String USER = "user";

	private static final String NAME = "name";

	private static final String EMAIL = "email";

	private static final String ALICE = "Alice";

	private static final String BOB = "Bob";

	private static final String ALICE_EMAIL = "alice@home";

	private static final String CONTENT1 = "[" + USER + "]\n\t" + NAME + " = "
	+ ALICE + "\n";

	private static final String CONTENT2 = "[" + USER + "]\n\t" + NAME + " = "
	+ BOB + "\n";

	private static final String CONTENT3 = "[" + USER + "]\n\t" + NAME + " = "
	+ ALICE + "\n" + "[" + USER + "]\n\t" + EMAIL + " = " + ALICE_EMAIL;

	private Path trash;

	@Before
	public void setUp() throws Exception {
	trash = Files.createTempDirectory("tmp_");
	FS.getFileStoreAttributes(trash.getParent());
	}

	@After
	public void tearDown() throws Exception {
	FileUtils.delete(trash.toFile(),
	FileUtils.RECURSIVE \| FileUtils.SKIP_MISSING \| FileUtils.RETRY);
	}

	@Test
	public void testSystemEncoding() throws IOException, ConfigInvalidException {
	final Path file = createFile(CONTENT1.getBytes(UTF_8));
	final FileBasedConfig config = new FileBasedConfig(file.toFile(),
	FS.DETECTED);
	config.load();
	assertEquals(ALICE, config.getString(USER, null, NAME));

	config.setString(USER, null, NAME, BOB);
	config.save();
	assertArrayEquals(CONTENT2.getBytes(UTF_8), IO.readFully(file.toFile()));
	}

	@Test
	public void testUTF8withoutBOM() throws IOException, ConfigInvalidException {
	final Path file = createFile(CONTENT1.getBytes(UTF_8));
	final FileBasedConfig config = new FileBasedConfig(file.toFile(),
	FS.DETECTED);
	config.load();
	assertEquals(ALICE, config.getString(USER, null, NAME));

	config.setString(USER, null, NAME, BOB);
	config.save();
	assertArrayEquals(CONTENT2.getBytes(UTF_8), IO.readFully(file.toFile()));
	}

	@Test
	public void testUTF8withBOM() throws IOException, ConfigInvalidException {
	final ByteArrayOutputStream bos1 = new ByteArrayOutputStream();
	bos1.write(0xEF);
	bos1.write(0xBB);
	bos1.write(0xBF);
	bos1.write(CONTENT1.getBytes(UTF_8));

	final Path file = createFile(bos1.toByteArray());
	final FileBasedConfig config = new FileBasedConfig(file.toFile(),
	FS.DETECTED);
	config.load();
	assertEquals(ALICE, config.getString(USER, null, NAME));

	config.setString(USER, null, NAME, BOB);
	config.save();

	final ByteArrayOutputStream bos2 = new ByteArrayOutputStream();
	bos2.write(0xEF);
	bos2.write(0xBB);
	bos2.write(0xBF);
	bos2.write(CONTENT2.getBytes(UTF_8));
	assertArrayEquals(bos2.toByteArray(), IO.readFully(file.toFile()));
	}

	@Test
	public void testLeadingWhitespaces() throws IOException, ConfigInvalidException {
	final ByteArrayOutputStream bos1 = new ByteArrayOutputStream();
	bos1.write(" \n\t".getBytes(UTF_8));
	bos1.write(CONTENT1.getBytes(UTF_8));

	final Path file = createFile(bos1.toByteArray());
	final FileBasedConfig config = new FileBasedConfig(file.toFile(),
	FS.DETECTED);
	config.load();
	assertEquals(ALICE, config.getString(USER, null, NAME));

	config.setString(USER, null, NAME, BOB);
	config.save();

	final ByteArrayOutputStream bos2 = new ByteArrayOutputStream();
	bos2.write(" \n\t".getBytes(UTF_8));
	bos2.write(CONTENT2.getBytes(UTF_8));
	assertArrayEquals(bos2.toByteArray(), IO.readFully(file.toFile()));
	}

	@Test
	public void testIncludeAbsolute()
	throws IOException, ConfigInvalidException {
	final Path includedFile = createFile(CONTENT1.getBytes(UTF_8));
	final ByteArrayOutputStream bos = new ByteArrayOutputStream();
	bos.write("[include]\npath=".getBytes(UTF_8));
	bos.write(pathToString(includedFile.toFile()).getBytes(UTF_8));

	final Path file = createFile(bos.toByteArray());
	final FileBasedConfig config = new FileBasedConfig(file.toFile(),
	FS.DETECTED);
	config.load();
	assertEquals(ALICE, config.getString(USER, null, NAME));
	}

	@Test
	public void testIncludeRelativeDot()
	throws IOException, ConfigInvalidException {
	final Path includedFile = createFile(CONTENT1.getBytes(UTF_8), "dir1");
	final ByteArrayOutputStream bos = new ByteArrayOutputStream();
	bos.write("[include]\npath=".getBytes(UTF_8));
	bos.write(("./" + includedFile.getFileName()).getBytes(UTF_8));

	final Path file = createFile(bos.toByteArray(), "dir1");
	final FileBasedConfig config = new FileBasedConfig(file.toFile(),
	FS.DETECTED);
	config.load();
	assertEquals(ALICE, config.getString(USER, null, NAME));
	}

	@Test
	public void testIncludeRelativeDotDot()
	throws IOException, ConfigInvalidException {
	final Path includedFile = createFile(CONTENT1.getBytes(UTF_8), "dir1");
	final ByteArrayOutputStream bos = new ByteArrayOutputStream();
	bos.write("[include]\npath=".getBytes(UTF_8));
	bos.write(("../" + includedFile.getParent().getFileName() + "/"
	+ includedFile.getFileName()).getBytes(UTF_8));

	final Path file = createFile(bos.toByteArray(), "dir2");
	final FileBasedConfig config = new FileBasedConfig(file.toFile(),
	FS.DETECTED);
	config.load();
	assertEquals(ALICE, config.getString(USER, null, NAME));
	}

	@Test
	public void testIncludeRelativeDotDotNotFound()
	throws IOException, ConfigInvalidException {
	final Path includedFile = createFile(CONTENT1.getBytes(UTF_8));
	final ByteArrayOutputStream bos = new ByteArrayOutputStream();
	bos.write("[include]\npath=".getBytes(UTF_8));
	bos.write(("../" + includedFile.getFileName()).getBytes(UTF_8));

	final Path file = createFile(bos.toByteArray());
	final FileBasedConfig config = new FileBasedConfig(file.toFile(),
	FS.DETECTED);
	config.load();
	assertEquals(null, config.getString(USER, null, NAME));
	}

	@Test
	public void testIncludeWithTilde()
	throws IOException, ConfigInvalidException {
	final Path includedFile = createFile(CONTENT1.getBytes(UTF_8), "home");
	final ByteArrayOutputStream bos = new ByteArrayOutputStream();
	bos.write("[include]\npath=".getBytes(UTF_8));
	bos.write(("~/" + includedFile.getFileName()).getBytes(UTF_8));

	final Path file = createFile(bos.toByteArray(), "repo");
	final FS fs = FS.DETECTED.newInstance();
	fs.setUserHome(includedFile.getParent().toFile());

	final FileBasedConfig config = new FileBasedConfig(file.toFile(), fs);
	config.load();
	assertEquals(ALICE, config.getString(USER, null, NAME));
	}

	@Test
	public void testIncludeDontInlineIncludedLinesOnSave()
	throws IOException, ConfigInvalidException {
	// use a content with multiple sections and multiple key/value pairs
	// because code for first line works different than for subsequent lines
	final Path includedFile = createFile(CONTENT3.getBytes(UTF_8), "dir1");

	final Path file = createFile(new byte[0], "dir2");
	FileBasedConfig config = new FileBasedConfig(file.toFile(),
	FS.DETECTED);
	config.setString("include", null, "path",
	("../" + includedFile.getParent().getFileName() + "/"
	+ includedFile.getFileName()));

	// just by setting the include.path, it won't be included
	assertEquals(null, config.getString(USER, null, NAME));
	assertEquals(null, config.getString(USER, null, EMAIL));
	config.save();

	// and it won't be included after saving
	assertEquals(null, config.getString(USER, null, NAME));
	assertEquals(null, config.getString(USER, null, EMAIL));

	final String expectedText = config.toText();
	assertEquals(2,
	new StringTokenizer(expectedText, "\n", false).countTokens());

	config = new FileBasedConfig(file.toFile(), FS.DETECTED);
	config.load();

	String actualText = config.toText();
	assertEquals(expectedText, actualText);
	// but it will be included after (re)loading
	assertEquals(ALICE, config.getString(USER, null, NAME));
	assertEquals(ALICE_EMAIL, config.getString(USER, null, EMAIL));

	config.save();

	actualText = config.toText();
	assertEquals(expectedText, actualText);
	// and of course preserved after saving
	assertEquals(ALICE, config.getString(USER, null, NAME));
	assertEquals(ALICE_EMAIL, config.getString(USER, null, EMAIL));
	}

	private Path createFile(byte[] content) throws IOException {
	return createFile(content, null);
	}

	private Path createFile(byte[] content, String subdir) throws IOException {
	Path dir = subdir != null ? trash.resolve(subdir) : trash;
	Files.createDirectories(dir);

	Path f = Files.createTempFile(dir, getClass().getName(), null);
	try (OutputStream os = Files.newOutputStream(f,
	StandardOpenOption.APPEND)) {
	os.write(content);
	}
	return f;
	}
	}