/*
 * Copyright (C) 2009, Google Inc.
 * Copyright (C) 2008-2009, Jonas Fonseca <fonseca@diku.dk>
 * Copyright (C) 2007-2009, Robin Rosenberg <robin.rosenberg@dewire.com>
 * Copyright (C) 2006-2007, Shawn O. Pearce <spearce@spearce.org>
 * Copyright (C) 2009, Yann Simon <yann.simon.fr@gmail.com>
 * 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;
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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package org.eclipse.jgit.lib;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;

import org.eclipse.jgit.junit.LocalDiskRepositoryTestCase;
import org.eclipse.jgit.util.JGitTestUtil;

/**
 * Base class for most JGit unit tests.
 *
 * Sets up a predefined test repository and has support for creating additional
 * repositories and destroying them when the tests are finished.
 */
public abstract class RepositoryTestCase extends LocalDiskRepositoryTestCase {
	protected static void copyFile(final File src, final File dst)
			throws IOException {
		final FileInputStream fis = new FileInputStream(src);
		try {
			final FileOutputStream fos = new FileOutputStream(dst);
			try {
				final byte[] buf = new byte[4096];
				int r;
				while ((r = fis.read(buf)) > 0) {
					fos.write(buf, 0, r);
				}
			} finally {
				fos.close();
			}
		} finally {
			fis.close();
		}
	}

	protected File writeTrashFile(final String name, final String data)
			throws IOException {
		File path = new File(db.getWorkDir(), name);
		write(path, data);
		return path;
	}

	protected static void checkFile(File f, final String checkData)
			throws IOException {
		Reader r = new InputStreamReader(new FileInputStream(f), "ISO-8859-1");
		try {
			char[] data = new char[(int) f.length()];
			if (f.length() !=  r.read(data))
				throw new IOException("Internal error reading file data from "+f);
			assertEquals(checkData, new String(data));
		} finally {
			r.close();
		}
	}

	/** Test repository, initialized for this test case. */
	protected Repository db;

	/** Working directory of {@link #db}. */
	protected File trash;

	@Override
	protected void setUp() throws Exception {
		super.setUp();
		db = createWorkRepository();
		trash = db.getWorkDir();

		final String[] packs = {
				"pack-34be9032ac282b11fa9babdc2b2a93ca996c9c2f",
				"pack-df2982f284bbabb6bdb59ee3fcc6eb0983e20371",
				"pack-9fb5b411fe6dfa89cc2e6b89d2bd8e5de02b5745",
				"pack-546ff360fe3488adb20860ce3436a2d6373d2796",
				"pack-cbdeda40019ae0e6e789088ea0f51f164f489d14",
				"pack-e6d07037cbcf13376308a0a995d1fa48f8f76aaa",
				"pack-3280af9c07ee18a87705ef50b0cc4cd20266cf12"
		};
		final File packDir = new File(db.getObjectsDirectory(), "pack");
		for (String n : packs) {
			copyFile(JGitTestUtil.getTestResourceFile(n + ".pack"), new File(packDir, n + ".pack"));
			copyFile(JGitTestUtil.getTestResourceFile(n + ".idx"), new File(packDir, n + ".idx"));
		}

		copyFile(JGitTestUtil.getTestResourceFile("packed-refs"), new File(db
				.getDirectory(), "packed-refs"));
	}
}