org.eclipse.jgit.test/exttst/org/eclipse/jgit/patch/EGitPatchHistoryTest.java - sop/jgit - Git at Google

 /*
  * 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.patch;

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

 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.UnsupportedEncodingException;
 import java.util.HashMap;
 import java.util.HashSet;

 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.util.MutableInteger;
 import org.eclipse.jgit.util.RawParseUtils;
 import org.eclipse.jgit.util.TemporaryBuffer;
 import org.junit.Test;

 public class EGitPatchHistoryTest {
 	@Test
 	public void testParseHistory() throws Exception {
 		final NumStatReader numstat = new NumStatReader();
 		numstat.read();

 		final HashMap<String, HashMap<String, StatInfo>> stats = numstat.stats;
 		assertEquals(1211, stats.size());

 		new PatchReader(stats).read();
 	}

 	static class StatInfo {
 		int added, deleted;
 	}

 	static class PatchReader extends CommitReader {
 		final HashSet<String> offBy1;

 		final HashMap<String, HashMap<String, StatInfo>> stats;

 		int errors;

 		PatchReader(final HashMap<String, HashMap<String, StatInfo>> s)
 				throws IOException {
 			super(new String[] { "-p" });
 			stats = s;

 			offBy1 = new HashSet<>();
 			offBy1.add("9bda5ece6806cd797416eaa47c7b927cc6e9c3b2");
 		}

 		@Override
 		void onCommit(String cid, byte[] buf) {
 			final HashMap<String, StatInfo> files = stats.remove(cid);
 			assertNotNull("No files for " + cid, files);

 			final Patch p = new Patch();
 			p.parse(buf, 0, buf.length - 1);
 			assertEquals("File count " + cid, files.size(), p.getFiles().size());
 			if (!p.getErrors().isEmpty()) {
 				for (final FormatError e : p.getErrors()) {
 					System.out.println("error " + e.getMessage());
 					System.out.println("  at " + e.getLineText());
 				}
 				dump(buf);
 				fail("Unexpected error in " + cid);
 			}

 			for (final FileHeader fh : p.getFiles()) {
 				final String fileName;
 				if (fh.getChangeType() != FileHeader.ChangeType.DELETE)
 					fileName = fh.getNewPath();
 				else
 					fileName = fh.getOldPath();
 				final StatInfo s = files.remove(fileName);
 				final String nid = fileName + " in " + cid;
 				assertNotNull("No " + nid, s);
 				int added = 0, deleted = 0;
 				for (final HunkHeader h : fh.getHunks()) {
 					added += h.getOldImage().getLinesAdded();
 					deleted += h.getOldImage().getLinesDeleted();
 				}

 				if (s.added == added) {
 					//
 				} else if (s.added == added + 1 && offBy1.contains(cid)) {
 					//
 				} else {
 					dump(buf);
 					assertEquals("Added diff in " + nid, s.added, added);
 				}

 				if (s.deleted == deleted) {
 					//
 				} else if (s.deleted == deleted + 1 && offBy1.contains(cid)) {
 					//
 				} else {
 					dump(buf);
 					assertEquals("Deleted diff in " + nid, s.deleted, deleted);
 				}
 			}
 			assertTrue("Missed files in " + cid, files.isEmpty());
 		}

 		private static void dump(final byte[] buf) {
 			String str;
 			try {
 				str = new String(buf, 0, buf.length - 1, "ISO-8859-1");
 			} catch (UnsupportedEncodingException e) {
 				throw new RuntimeException(e);
 			}
 			System.out.println("<<" + str + ">>");
 		}
 	}

 	static class NumStatReader extends CommitReader {
 		final HashMap<String, HashMap<String, StatInfo>> stats = new HashMap<>();

 		NumStatReader() throws IOException {
 			super(new String[] { "--numstat" });
 		}

 		@Override
 		void onCommit(String commitId, byte[] buf) {
 			final HashMap<String, StatInfo> files = new HashMap<>();
 			final MutableInteger ptr = new MutableInteger();
 			while (ptr.value < buf.length) {
 				if (buf[ptr.value] == '\n')
 					break;
 				final StatInfo i = new StatInfo();
 				i.added = RawParseUtils.parseBase10(buf, ptr.value, ptr);
 				i.deleted = RawParseUtils.parseBase10(buf, ptr.value + 1, ptr);
 				final int eol = RawParseUtils.nextLF(buf, ptr.value);
 				final String name = RawParseUtils.decode(Constants.CHARSET,
 						buf, ptr.value + 1, eol - 1);
 				files.put(name, i);
 				ptr.value = eol;
 			}
 			stats.put(commitId, files);
 		}
 	}

 	static abstract class CommitReader {
 		private Process proc;

 		CommitReader(final String[] args) throws IOException {
 			final String[] realArgs = new String[3 + args.length + 1];
 			realArgs[0] = "git";
 			realArgs[1] = "log";
 			realArgs[2] = "--pretty=format:commit %H";
 			System.arraycopy(args, 0, realArgs, 3, args.length);
 			realArgs[3 + args.length] = "a4b98ed15ea5f165a7aa0f2fd2ea6fcce6710925";

 			proc = Runtime.getRuntime().exec(realArgs);
 			proc.getOutputStream().close();
 			proc.getErrorStream().close();
 		}

 		void read() throws IOException, InterruptedException {
 			final BufferedReader in = new BufferedReader(new InputStreamReader(
 					proc.getInputStream(), "ISO-8859-1"));
 			String commitId = null;
 			TemporaryBuffer buf = null;
 			for (;;) {
 				String line = in.readLine();
 				if (line == null)
 					break;
 				if (line.startsWith("commit ")) {
 					if (buf != null) {
 						buf.close();
 						onCommit(commitId, buf.toByteArray());
 						buf.destroy();
 					}
 					commitId = line.substring("commit ".length());
 					buf = new TemporaryBuffer.LocalFile(null);
 				} else if (buf != null) {
 					buf.write(line.getBytes("ISO-8859-1"));
 					buf.write('\n');
 				}
 			}
 			in.close();
 			assertEquals(0, proc.waitFor());
 			proc = null;
 		}

 		abstract void onCommit(String commitId, byte[] buf);
 	}
 }
	/*
	* 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.patch;

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

	import java.io.BufferedReader;
	import java.io.IOException;
	import java.io.InputStreamReader;
	import java.io.UnsupportedEncodingException;
	import java.util.HashMap;
	import java.util.HashSet;

	import org.eclipse.jgit.lib.Constants;
	import org.eclipse.jgit.util.MutableInteger;
	import org.eclipse.jgit.util.RawParseUtils;
	import org.eclipse.jgit.util.TemporaryBuffer;
	import org.junit.Test;

	public class EGitPatchHistoryTest {
	@Test
	public void testParseHistory() throws Exception {
	final NumStatReader numstat = new NumStatReader();
	numstat.read();

	final HashMap<String, HashMap<String, StatInfo>> stats = numstat.stats;
	assertEquals(1211, stats.size());

	new PatchReader(stats).read();
	}

	static class StatInfo {
	int added, deleted;
	}

	static class PatchReader extends CommitReader {
	final HashSet<String> offBy1;

	final HashMap<String, HashMap<String, StatInfo>> stats;

	int errors;

	PatchReader(final HashMap<String, HashMap<String, StatInfo>> s)
	throws IOException {
	super(new String[] { "-p" });
	stats = s;

	offBy1 = new HashSet<>();
	offBy1.add("9bda5ece6806cd797416eaa47c7b927cc6e9c3b2");
	}

	@Override
	void onCommit(String cid, byte[] buf) {
	final HashMap<String, StatInfo> files = stats.remove(cid);
	assertNotNull("No files for " + cid, files);

	final Patch p = new Patch();
	p.parse(buf, 0, buf.length - 1);
	assertEquals("File count " + cid, files.size(), p.getFiles().size());
	if (!p.getErrors().isEmpty()) {
	for (final FormatError e : p.getErrors()) {
	System.out.println("error " + e.getMessage());
	System.out.println(" at " + e.getLineText());
	}
	dump(buf);
	fail("Unexpected error in " + cid);
	}

	for (final FileHeader fh : p.getFiles()) {
	final String fileName;
	if (fh.getChangeType() != FileHeader.ChangeType.DELETE)
	fileName = fh.getNewPath();
	else
	fileName = fh.getOldPath();
	final StatInfo s = files.remove(fileName);
	final String nid = fileName + " in " + cid;
	assertNotNull("No " + nid, s);
	int added = 0, deleted = 0;
	for (final HunkHeader h : fh.getHunks()) {
	added += h.getOldImage().getLinesAdded();
	deleted += h.getOldImage().getLinesDeleted();
	}

	if (s.added == added) {
	//
	} else if (s.added == added + 1 && offBy1.contains(cid)) {
	//
	} else {
	dump(buf);
	assertEquals("Added diff in " + nid, s.added, added);
	}

	if (s.deleted == deleted) {
	//
	} else if (s.deleted == deleted + 1 && offBy1.contains(cid)) {
	//
	} else {
	dump(buf);
	assertEquals("Deleted diff in " + nid, s.deleted, deleted);
	}
	}
	assertTrue("Missed files in " + cid, files.isEmpty());
	}

	private static void dump(final byte[] buf) {
	String str;
	try {
	str = new String(buf, 0, buf.length - 1, "ISO-8859-1");
	} catch (UnsupportedEncodingException e) {
	throw new RuntimeException(e);
	}
	System.out.println("<<" + str + ">>");
	}
	}

	static class NumStatReader extends CommitReader {
	final HashMap<String, HashMap<String, StatInfo>> stats = new HashMap<>();

	NumStatReader() throws IOException {
	super(new String[] { "--numstat" });
	}

	@Override
	void onCommit(String commitId, byte[] buf) {
	final HashMap<String, StatInfo> files = new HashMap<>();
	final MutableInteger ptr = new MutableInteger();
	while (ptr.value < buf.length) {
	if (buf[ptr.value] == '\n')
	break;
	final StatInfo i = new StatInfo();
	i.added = RawParseUtils.parseBase10(buf, ptr.value, ptr);
	i.deleted = RawParseUtils.parseBase10(buf, ptr.value + 1, ptr);
	final int eol = RawParseUtils.nextLF(buf, ptr.value);
	final String name = RawParseUtils.decode(Constants.CHARSET,
	buf, ptr.value + 1, eol - 1);
	files.put(name, i);
	ptr.value = eol;
	}
	stats.put(commitId, files);
	}
	}

	static abstract class CommitReader {
	private Process proc;

	CommitReader(final String[] args) throws IOException {
	final String[] realArgs = new String[3 + args.length + 1];
	realArgs[0] = "git";
	realArgs[1] = "log";
	realArgs[2] = "--pretty=format:commit %H";
	System.arraycopy(args, 0, realArgs, 3, args.length);
	realArgs[3 + args.length] = "a4b98ed15ea5f165a7aa0f2fd2ea6fcce6710925";

	proc = Runtime.getRuntime().exec(realArgs);
	proc.getOutputStream().close();
	proc.getErrorStream().close();
	}

	void read() throws IOException, InterruptedException {
	final BufferedReader in = new BufferedReader(new InputStreamReader(
	proc.getInputStream(), "ISO-8859-1"));
	String commitId = null;
	TemporaryBuffer buf = null;
	for (;;) {
	String line = in.readLine();
	if (line == null)
	break;
	if (line.startsWith("commit ")) {
	if (buf != null) {
	buf.close();
	onCommit(commitId, buf.toByteArray());
	buf.destroy();
	}
	commitId = line.substring("commit ".length());
	buf = new TemporaryBuffer.LocalFile(null);
	} else if (buf != null) {
	buf.write(line.getBytes("ISO-8859-1"));
	buf.write('\n');
	}
	}
	in.close();
	assertEquals(0, proc.waitFor());
	proc = null;
	}

	abstract void onCommit(String commitId, byte[] buf);
	}
	}