org.eclipse.jgit.test/tst/org/eclipse/jgit/revwalk/RevTagParseTest.java - jgit/jgit - Gitiles

 /*
  * Copyright (C) 2008-2009, Google Inc.
  * 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.revwalk;

 import java.io.ByteArrayOutputStream;

 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.PersonIdent;
 import org.eclipse.jgit.lib.RepositoryTestCase;

 public class RevTagParseTest extends RepositoryTestCase {
 	public void testTagBlob() throws Exception {
 		testOneType(Constants.OBJ_BLOB);
 	}

 	public void testTagTree() throws Exception {
 		testOneType(Constants.OBJ_TREE);
 	}

 	public void testTagCommit() throws Exception {
 		testOneType(Constants.OBJ_COMMIT);
 	}

 	public void testTagTag() throws Exception {
 		testOneType(Constants.OBJ_TAG);
 	}

 	private void testOneType(final int typeCode) throws Exception {
 		final ObjectId id = id("9788669ad918b6fcce64af8882fc9a81cb6aba67");
 		final StringBuilder b = new StringBuilder();
 		b.append("object " + id.name() + "\n");
 		b.append("type " + Constants.typeString(typeCode) + "\n");
 		b.append("tag v1.2.3.4.5\n");
 		b.append("tagger A U. Thor <a_u_thor@example.com> 1218123387 +0700\n");
 		b.append("\n");

 		final RevWalk rw = new RevWalk(db);
 		final RevTag c;

 		c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
 		assertNull(c.getObject());
 		assertNull(c.getTagName());

 		c.parseCanonical(rw, b.toString().getBytes("UTF-8"));
 		assertNotNull(c.getObject());
 		assertEquals(id, c.getObject().getId());
 		assertSame(rw.lookupAny(id, typeCode), c.getObject());
 	}

 	public void testParseAllFields() throws Exception {
 		final ObjectId treeId = id("9788669ad918b6fcce64af8882fc9a81cb6aba67");
 		final String name = "v1.2.3.4.5";
 		final String taggerName = "A U. Thor";
 		final String taggerEmail = "a_u_thor@example.com";
 		final int taggerTime = 1218123387;

 		final StringBuilder body = new StringBuilder();

 		body.append("object ");
 		body.append(treeId.name());
 		body.append("\n");

 		body.append("type tree\n");

 		body.append("tag ");
 		body.append(name);
 		body.append("\n");

 		body.append("tagger ");
 		body.append(taggerName);
 		body.append(" <");
 		body.append(taggerEmail);
 		body.append("> ");
 		body.append(taggerTime);
 		body.append(" +0700\n");

 		body.append("\n");

 		final RevWalk rw = new RevWalk(db);
 		final RevTag c;

 		c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
 		assertNull(c.getObject());
 		assertNull(c.getTagName());

 		c.parseCanonical(rw, body.toString().getBytes("UTF-8"));
 		assertNotNull(c.getObject());
 		assertEquals(treeId, c.getObject().getId());
 		assertSame(rw.lookupTree(treeId), c.getObject());

 		assertNotNull(c.getTagName());
 		assertEquals(name, c.getTagName());
 		assertEquals("", c.getFullMessage());

 		final PersonIdent cTagger = c.getTaggerIdent();
 		assertNotNull(cTagger);
 		assertEquals(taggerName, cTagger.getName());
 		assertEquals(taggerEmail, cTagger.getEmailAddress());
 	}

 	private RevTag create(final String msg) throws Exception {
 		final StringBuilder b = new StringBuilder();
 		b.append("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n");
 		b.append("type tree\n");
 		b.append("tag v1.2.3.4.5\n");
 		b.append("tagger A U. Thor <a_u_thor@example.com> 1218123387 +0700\n");
 		b.append("\n");
 		b.append(msg);

 		final RevTag c;
 		c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
 		c.parseCanonical(new RevWalk(db), b.toString().getBytes("UTF-8"));
 		return c;
 	}

 	public void testParse_implicit_UTF8_encoded() throws Exception {
 		final ByteArrayOutputStream b = new ByteArrayOutputStream();
 		b.write("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n"
 				.getBytes("UTF-8"));
 		b.write("type tree\n".getBytes("UTF-8"));
 		b.write("tag v1.2.3.4.5\n".getBytes("UTF-8"));

 		b
 				.write("tagger F\u00f6r fattare <a_u_thor@example.com> 1218123387 +0700\n"
 						.getBytes("UTF-8"));
 		b.write("\n".getBytes("UTF-8"));
 		b.write("Sm\u00f6rg\u00e5sbord\n".getBytes("UTF-8"));
 		b.write("\n".getBytes("UTF-8"));
 		b.write("\u304d\u308c\u3044\n".getBytes("UTF-8"));
 		final RevTag c;
 		c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
 		c.parseCanonical(new RevWalk(db), b.toByteArray());

 		assertEquals("F\u00f6r fattare", c.getTaggerIdent().getName());
 		assertEquals("Sm\u00f6rg\u00e5sbord", c.getShortMessage());
 		assertEquals("Sm\u00f6rg\u00e5sbord\n\n\u304d\u308c\u3044\n", c
 				.getFullMessage());
 	}

 	public void testParse_implicit_mixed_encoded() throws Exception {
 		final ByteArrayOutputStream b = new ByteArrayOutputStream();
 		b.write("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n"
 				.getBytes("UTF-8"));
 		b.write("type tree\n".getBytes("UTF-8"));
 		b.write("tag v1.2.3.4.5\n".getBytes("UTF-8"));
 		b
 				.write("tagger F\u00f6r fattare <a_u_thor@example.com> 1218123387 +0700\n"
 						.getBytes("ISO-8859-1"));
 		b.write("\n".getBytes("UTF-8"));
 		b.write("Sm\u00f6rg\u00e5sbord\n".getBytes("UTF-8"));
 		b.write("\n".getBytes("UTF-8"));
 		b.write("\u304d\u308c\u3044\n".getBytes("UTF-8"));
 		final RevTag c;
 		c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
 		c.parseCanonical(new RevWalk(db), b.toByteArray());

 		assertEquals("F\u00f6r fattare", c.getTaggerIdent().getName());
 		assertEquals("Sm\u00f6rg\u00e5sbord", c.getShortMessage());
 		assertEquals("Sm\u00f6rg\u00e5sbord\n\n\u304d\u308c\u3044\n", c
 				.getFullMessage());
 	}

 	/**
 	 * Test parsing of a commit whose encoding is given and works.
 	 *
 	 * @throws Exception
 	 */
 	public void testParse_explicit_encoded() throws Exception {
 		final ByteArrayOutputStream b = new ByteArrayOutputStream();
 		b.write("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n"
 				.getBytes("EUC-JP"));
 		b.write("type tree\n".getBytes("EUC-JP"));
 		b.write("tag v1.2.3.4.5\n".getBytes("EUC-JP"));
 		b
 				.write("tagger F\u00f6r fattare <a_u_thor@example.com> 1218123387 +0700\n"
 						.getBytes("EUC-JP"));
 		b.write("encoding euc_JP\n".getBytes("EUC-JP"));
 		b.write("\n".getBytes("EUC-JP"));
 		b.write("\u304d\u308c\u3044\n".getBytes("EUC-JP"));
 		b.write("\n".getBytes("EUC-JP"));
 		b.write("Hi\n".getBytes("EUC-JP"));
 		final RevTag c;
 		c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
 		c.parseCanonical(new RevWalk(db), b.toByteArray());

 		assertEquals("F\u00f6r fattare", c.getTaggerIdent().getName());
 		assertEquals("\u304d\u308c\u3044", c.getShortMessage());
 		assertEquals("\u304d\u308c\u3044\n\nHi\n", c.getFullMessage());
 	}

 	/**
 	 * This is a twisted case, but show what we expect here. We can revise the
 	 * expectations provided this case is updated.
 	 *
 	 * What happens here is that an encoding us given, but data is not encoded
 	 * that way (and we can detect it), so we try other encodings.
 	 *
 	 * @throws Exception
 	 */
 	public void testParse_explicit_bad_encoded() throws Exception {
 		final ByteArrayOutputStream b = new ByteArrayOutputStream();
 		b.write("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n"
 				.getBytes("UTF-8"));
 		b.write("type tree\n".getBytes("UTF-8"));
 		b.write("tag v1.2.3.4.5\n".getBytes("UTF-8"));
 		b
 				.write("tagger F\u00f6r fattare <a_u_thor@example.com> 1218123387 +0700\n"
 						.getBytes("ISO-8859-1"));
 		b.write("encoding EUC-JP\n".getBytes("UTF-8"));
 		b.write("\n".getBytes("UTF-8"));
 		b.write("\u304d\u308c\u3044\n".getBytes("UTF-8"));
 		b.write("\n".getBytes("UTF-8"));
 		b.write("Hi\n".getBytes("UTF-8"));
 		final RevTag c;
 		c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
 		c.parseCanonical(new RevWalk(db), b.toByteArray());

 		assertEquals("F\u00f6r fattare", c.getTaggerIdent().getName());
 		assertEquals("\u304d\u308c\u3044", c.getShortMessage());
 		assertEquals("\u304d\u308c\u3044\n\nHi\n", c.getFullMessage());
 	}

 	/**
 	 * This is a twisted case too, but show what we expect here. We can revise
 	 * the expectations provided this case is updated.
 	 *
 	 * What happens here is that an encoding us given, but data is not encoded
 	 * that way (and we can detect it), so we try other encodings. Here data
 	 * could actually be decoded in the stated encoding, but we override using
 	 * UTF-8.
 	 *
 	 * @throws Exception
 	 */
 	public void testParse_explicit_bad_encoded2() throws Exception {
 		final ByteArrayOutputStream b = new ByteArrayOutputStream();
 		b.write("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n"
 				.getBytes("UTF-8"));
 		b.write("type tree\n".getBytes("UTF-8"));
 		b.write("tag v1.2.3.4.5\n".getBytes("UTF-8"));
 		b
 				.write("tagger F\u00f6r fattare <a_u_thor@example.com> 1218123387 +0700\n"
 						.getBytes("UTF-8"));
 		b.write("encoding ISO-8859-1\n".getBytes("UTF-8"));
 		b.write("\n".getBytes("UTF-8"));
 		b.write("\u304d\u308c\u3044\n".getBytes("UTF-8"));
 		b.write("\n".getBytes("UTF-8"));
 		b.write("Hi\n".getBytes("UTF-8"));
 		final RevTag c;
 		c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
 		c.parseCanonical(new RevWalk(db), b.toByteArray());

 		assertEquals("F\u00f6r fattare", c.getTaggerIdent().getName());
 		assertEquals("\u304d\u308c\u3044", c.getShortMessage());
 		assertEquals("\u304d\u308c\u3044\n\nHi\n", c.getFullMessage());
 	}

 	public void testParse_NoMessage() throws Exception {
 		final String msg = "";
 		final RevTag c = create(msg);
 		assertEquals(msg, c.getFullMessage());
 		assertEquals(msg, c.getShortMessage());
 	}

 	public void testParse_OnlyLFMessage() throws Exception {
 		final RevTag c = create("\n");
 		assertEquals("\n", c.getFullMessage());
 		assertEquals("", c.getShortMessage());
 	}

 	public void testParse_ShortLineOnlyNoLF() throws Exception {
 		final String shortMsg = "This is a short message.";
 		final RevTag c = create(shortMsg);
 		assertEquals(shortMsg, c.getFullMessage());
 		assertEquals(shortMsg, c.getShortMessage());
 	}

 	public void testParse_ShortLineOnlyEndLF() throws Exception {
 		final String shortMsg = "This is a short message.";
 		final String fullMsg = shortMsg + "\n";
 		final RevTag c = create(fullMsg);
 		assertEquals(fullMsg, c.getFullMessage());
 		assertEquals(shortMsg, c.getShortMessage());
 	}

 	public void testParse_ShortLineOnlyEmbeddedLF() throws Exception {
 		final String fullMsg = "This is a\nshort message.";
 		final String shortMsg = fullMsg.replace('\n', ' ');
 		final RevTag c = create(fullMsg);
 		assertEquals(fullMsg, c.getFullMessage());
 		assertEquals(shortMsg, c.getShortMessage());
 	}

 	public void testParse_ShortLineOnlyEmbeddedAndEndingLF() throws Exception {
 		final String fullMsg = "This is a\nshort message.\n";
 		final String shortMsg = "This is a short message.";
 		final RevTag c = create(fullMsg);
 		assertEquals(fullMsg, c.getFullMessage());
 		assertEquals(shortMsg, c.getShortMessage());
 	}

 	public void testParse_GitStyleMessage() throws Exception {
 		final String shortMsg = "This fixes a bug.";
 		final String body = "We do it with magic and pixie dust and stuff.\n"
 				+ "\n" + "Signed-off-by: A U. Thor <author@example.com>\n";
 		final String fullMsg = shortMsg + "\n" + "\n" + body;
 		final RevTag c = create(fullMsg);
 		assertEquals(fullMsg, c.getFullMessage());
 		assertEquals(shortMsg, c.getShortMessage());
 	}

 	private static ObjectId id(final String str) {
 		return ObjectId.fromString(str);
 	}
 }
	/*
	* Copyright (C) 2008-2009, Google Inc.
	* 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.revwalk;

	import java.io.ByteArrayOutputStream;

	import org.eclipse.jgit.lib.Constants;
	import org.eclipse.jgit.lib.ObjectId;
	import org.eclipse.jgit.lib.PersonIdent;
	import org.eclipse.jgit.lib.RepositoryTestCase;

	public class RevTagParseTest extends RepositoryTestCase {
	public void testTagBlob() throws Exception {
	testOneType(Constants.OBJ_BLOB);
	}

	public void testTagTree() throws Exception {
	testOneType(Constants.OBJ_TREE);
	}

	public void testTagCommit() throws Exception {
	testOneType(Constants.OBJ_COMMIT);
	}

	public void testTagTag() throws Exception {
	testOneType(Constants.OBJ_TAG);
	}

	private void testOneType(final int typeCode) throws Exception {
	final ObjectId id = id("9788669ad918b6fcce64af8882fc9a81cb6aba67");
	final StringBuilder b = new StringBuilder();
	b.append("object " + id.name() + "\n");
	b.append("type " + Constants.typeString(typeCode) + "\n");
	b.append("tag v1.2.3.4.5\n");
	b.append("tagger A U. Thor <a_u_thor@example.com> 1218123387 +0700\n");
	b.append("\n");

	final RevWalk rw = new RevWalk(db);
	final RevTag c;

	c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
	assertNull(c.getObject());
	assertNull(c.getTagName());

	c.parseCanonical(rw, b.toString().getBytes("UTF-8"));
	assertNotNull(c.getObject());
	assertEquals(id, c.getObject().getId());
	assertSame(rw.lookupAny(id, typeCode), c.getObject());
	}

	public void testParseAllFields() throws Exception {
	final ObjectId treeId = id("9788669ad918b6fcce64af8882fc9a81cb6aba67");
	final String name = "v1.2.3.4.5";
	final String taggerName = "A U. Thor";
	final String taggerEmail = "a_u_thor@example.com";
	final int taggerTime = 1218123387;

	final StringBuilder body = new StringBuilder();

	body.append("object ");
	body.append(treeId.name());
	body.append("\n");

	body.append("type tree\n");

	body.append("tag ");
	body.append(name);
	body.append("\n");

	body.append("tagger ");
	body.append(taggerName);
	body.append(" <");
	body.append(taggerEmail);
	body.append("> ");
	body.append(taggerTime);
	body.append(" +0700\n");

	body.append("\n");

	final RevWalk rw = new RevWalk(db);
	final RevTag c;

	c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
	assertNull(c.getObject());
	assertNull(c.getTagName());

	c.parseCanonical(rw, body.toString().getBytes("UTF-8"));
	assertNotNull(c.getObject());
	assertEquals(treeId, c.getObject().getId());
	assertSame(rw.lookupTree(treeId), c.getObject());

	assertNotNull(c.getTagName());
	assertEquals(name, c.getTagName());
	assertEquals("", c.getFullMessage());

	final PersonIdent cTagger = c.getTaggerIdent();
	assertNotNull(cTagger);
	assertEquals(taggerName, cTagger.getName());
	assertEquals(taggerEmail, cTagger.getEmailAddress());
	}

	private RevTag create(final String msg) throws Exception {
	final StringBuilder b = new StringBuilder();
	b.append("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n");
	b.append("type tree\n");
	b.append("tag v1.2.3.4.5\n");
	b.append("tagger A U. Thor <a_u_thor@example.com> 1218123387 +0700\n");
	b.append("\n");
	b.append(msg);

	final RevTag c;
	c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
	c.parseCanonical(new RevWalk(db), b.toString().getBytes("UTF-8"));
	return c;
	}

	public void testParse_implicit_UTF8_encoded() throws Exception {
	final ByteArrayOutputStream b = new ByteArrayOutputStream();
	b.write("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n"
	.getBytes("UTF-8"));
	b.write("type tree\n".getBytes("UTF-8"));
	b.write("tag v1.2.3.4.5\n".getBytes("UTF-8"));

	b
	.write("tagger F\u00f6r fattare <a_u_thor@example.com> 1218123387 +0700\n"
	.getBytes("UTF-8"));
	b.write("\n".getBytes("UTF-8"));
	b.write("Sm\u00f6rg\u00e5sbord\n".getBytes("UTF-8"));
	b.write("\n".getBytes("UTF-8"));
	b.write("\u304d\u308c\u3044\n".getBytes("UTF-8"));
	final RevTag c;
	c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
	c.parseCanonical(new RevWalk(db), b.toByteArray());

	assertEquals("F\u00f6r fattare", c.getTaggerIdent().getName());
	assertEquals("Sm\u00f6rg\u00e5sbord", c.getShortMessage());
	assertEquals("Sm\u00f6rg\u00e5sbord\n\n\u304d\u308c\u3044\n", c
	.getFullMessage());
	}

	public void testParse_implicit_mixed_encoded() throws Exception {
	final ByteArrayOutputStream b = new ByteArrayOutputStream();
	b.write("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n"
	.getBytes("UTF-8"));
	b.write("type tree\n".getBytes("UTF-8"));
	b.write("tag v1.2.3.4.5\n".getBytes("UTF-8"));
	b
	.write("tagger F\u00f6r fattare <a_u_thor@example.com> 1218123387 +0700\n"
	.getBytes("ISO-8859-1"));
	b.write("\n".getBytes("UTF-8"));
	b.write("Sm\u00f6rg\u00e5sbord\n".getBytes("UTF-8"));
	b.write("\n".getBytes("UTF-8"));
	b.write("\u304d\u308c\u3044\n".getBytes("UTF-8"));
	final RevTag c;
	c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
	c.parseCanonical(new RevWalk(db), b.toByteArray());

	assertEquals("F\u00f6r fattare", c.getTaggerIdent().getName());
	assertEquals("Sm\u00f6rg\u00e5sbord", c.getShortMessage());
	assertEquals("Sm\u00f6rg\u00e5sbord\n\n\u304d\u308c\u3044\n", c
	.getFullMessage());
	}

	/**
	* Test parsing of a commit whose encoding is given and works.
	*
	* @throws Exception
	*/
	public void testParse_explicit_encoded() throws Exception {
	final ByteArrayOutputStream b = new ByteArrayOutputStream();
	b.write("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n"
	.getBytes("EUC-JP"));
	b.write("type tree\n".getBytes("EUC-JP"));
	b.write("tag v1.2.3.4.5\n".getBytes("EUC-JP"));
	b
	.write("tagger F\u00f6r fattare <a_u_thor@example.com> 1218123387 +0700\n"
	.getBytes("EUC-JP"));
	b.write("encoding euc_JP\n".getBytes("EUC-JP"));
	b.write("\n".getBytes("EUC-JP"));
	b.write("\u304d\u308c\u3044\n".getBytes("EUC-JP"));
	b.write("\n".getBytes("EUC-JP"));
	b.write("Hi\n".getBytes("EUC-JP"));
	final RevTag c;
	c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
	c.parseCanonical(new RevWalk(db), b.toByteArray());

	assertEquals("F\u00f6r fattare", c.getTaggerIdent().getName());
	assertEquals("\u304d\u308c\u3044", c.getShortMessage());
	assertEquals("\u304d\u308c\u3044\n\nHi\n", c.getFullMessage());
	}

	/**
	* This is a twisted case, but show what we expect here. We can revise the
	* expectations provided this case is updated.
	*
	* What happens here is that an encoding us given, but data is not encoded
	* that way (and we can detect it), so we try other encodings.
	*
	* @throws Exception
	*/
	public void testParse_explicit_bad_encoded() throws Exception {
	final ByteArrayOutputStream b = new ByteArrayOutputStream();
	b.write("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n"
	.getBytes("UTF-8"));
	b.write("type tree\n".getBytes("UTF-8"));
	b.write("tag v1.2.3.4.5\n".getBytes("UTF-8"));
	b
	.write("tagger F\u00f6r fattare <a_u_thor@example.com> 1218123387 +0700\n"
	.getBytes("ISO-8859-1"));
	b.write("encoding EUC-JP\n".getBytes("UTF-8"));
	b.write("\n".getBytes("UTF-8"));
	b.write("\u304d\u308c\u3044\n".getBytes("UTF-8"));
	b.write("\n".getBytes("UTF-8"));
	b.write("Hi\n".getBytes("UTF-8"));
	final RevTag c;
	c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
	c.parseCanonical(new RevWalk(db), b.toByteArray());

	assertEquals("F\u00f6r fattare", c.getTaggerIdent().getName());
	assertEquals("\u304d\u308c\u3044", c.getShortMessage());
	assertEquals("\u304d\u308c\u3044\n\nHi\n", c.getFullMessage());
	}

	/**
	* This is a twisted case too, but show what we expect here. We can revise
	* the expectations provided this case is updated.
	*
	* What happens here is that an encoding us given, but data is not encoded
	* that way (and we can detect it), so we try other encodings. Here data
	* could actually be decoded in the stated encoding, but we override using
	* UTF-8.
	*
	* @throws Exception
	*/
	public void testParse_explicit_bad_encoded2() throws Exception {
	final ByteArrayOutputStream b = new ByteArrayOutputStream();
	b.write("object 9788669ad918b6fcce64af8882fc9a81cb6aba67\n"
	.getBytes("UTF-8"));
	b.write("type tree\n".getBytes("UTF-8"));
	b.write("tag v1.2.3.4.5\n".getBytes("UTF-8"));
	b
	.write("tagger F\u00f6r fattare <a_u_thor@example.com> 1218123387 +0700\n"
	.getBytes("UTF-8"));
	b.write("encoding ISO-8859-1\n".getBytes("UTF-8"));
	b.write("\n".getBytes("UTF-8"));
	b.write("\u304d\u308c\u3044\n".getBytes("UTF-8"));
	b.write("\n".getBytes("UTF-8"));
	b.write("Hi\n".getBytes("UTF-8"));
	final RevTag c;
	c = new RevTag(id("9473095c4cb2f12aefe1db8a355fe3fafba42f67"));
	c.parseCanonical(new RevWalk(db), b.toByteArray());

	assertEquals("F\u00f6r fattare", c.getTaggerIdent().getName());
	assertEquals("\u304d\u308c\u3044", c.getShortMessage());
	assertEquals("\u304d\u308c\u3044\n\nHi\n", c.getFullMessage());
	}

	public void testParse_NoMessage() throws Exception {
	final String msg = "";
	final RevTag c = create(msg);
	assertEquals(msg, c.getFullMessage());
	assertEquals(msg, c.getShortMessage());
	}

	public void testParse_OnlyLFMessage() throws Exception {
	final RevTag c = create("\n");
	assertEquals("\n", c.getFullMessage());
	assertEquals("", c.getShortMessage());
	}

	public void testParse_ShortLineOnlyNoLF() throws Exception {
	final String shortMsg = "This is a short message.";
	final RevTag c = create(shortMsg);
	assertEquals(shortMsg, c.getFullMessage());
	assertEquals(shortMsg, c.getShortMessage());
	}

	public void testParse_ShortLineOnlyEndLF() throws Exception {
	final String shortMsg = "This is a short message.";
	final String fullMsg = shortMsg + "\n";
	final RevTag c = create(fullMsg);
	assertEquals(fullMsg, c.getFullMessage());
	assertEquals(shortMsg, c.getShortMessage());
	}

	public void testParse_ShortLineOnlyEmbeddedLF() throws Exception {
	final String fullMsg = "This is a\nshort message.";
	final String shortMsg = fullMsg.replace('\n', ' ');
	final RevTag c = create(fullMsg);
	assertEquals(fullMsg, c.getFullMessage());
	assertEquals(shortMsg, c.getShortMessage());
	}

	public void testParse_ShortLineOnlyEmbeddedAndEndingLF() throws Exception {
	final String fullMsg = "This is a\nshort message.\n";
	final String shortMsg = "This is a short message.";
	final RevTag c = create(fullMsg);
	assertEquals(fullMsg, c.getFullMessage());
	assertEquals(shortMsg, c.getShortMessage());
	}

	public void testParse_GitStyleMessage() throws Exception {
	final String shortMsg = "This fixes a bug.";
	final String body = "We do it with magic and pixie dust and stuff.\n"
	+ "\n" + "Signed-off-by: A U. Thor <author@example.com>\n";
	final String fullMsg = shortMsg + "\n" + "\n" + body;
	final RevTag c = create(fullMsg);
	assertEquals(fullMsg, c.getFullMessage());
	assertEquals(shortMsg, c.getShortMessage());
	}

	private static ObjectId id(final String str) {
	return ObjectId.fromString(str);
	}
	}