/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * See LICENSE.txt included in this distribution for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at LICENSE.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */
package org.opensolaris.opengrok.history;

import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.opensolaris.opengrok.util.TestRepository;
import static org.junit.Assert.*;

/**
 *
 * @author austvik
 */
public class GitHistoryParserTest {

    GitHistoryParser instance;
    private static TestRepository repository = new TestRepository();

    public GitHistoryParserTest() {
    }

    @BeforeClass
    public static void setUpClass() throws Exception {
        repository = new TestRepository();
        repository.create(HistoryGuru.class.getResourceAsStream("repositories.zip"));
    }

    @AfterClass
    public static void tearDownClass() throws Exception {
    }

    @Before
    public void setUp() {
        instance = new GitHistoryParser();
    }

    @After
    public void tearDown() {
        instance = null;
    }

    /**
     * Test of parse method, of class GitHistoryParser.
     */
    @Test
    public void parseEmpty() throws Exception {
        History result = instance.parse("");
        assertNotNull(result);
        assertTrue("Should not contain any history entries", 0 == result.getHistoryEntries().size());
    }

    /**
     * Parse something that could come out from the Memcached repository
     * 
     * @throws java.lang.Exception
     */
    @Test
    public void parseALaMemcached() throws Exception {
        String commitId1 = "1a23456789abcdef123456789abcderf123456789";
        String commitId2 = "2a2323487092314kjsdafsad7829342kjhsdf3289";
        String commitId3 = "3asdfq234242871934g2sadfsa327894234sa2389";
        String author1 = "username <username@asfdsaf-23412-sadf-cxvdsfg3123-sfasdf>";
        String author2 = "username2 <username2@as345af-23412-sadf-cxvdsfg3123-sfasdf>";
        String date1 = "Sat Apr 1 15:12:51 2008 +0000";
        String date2 = "Wed Mar 22 15:23:15 2006 +0000";
        String output =
                "commit " + commitId1 + "\n" +
                "Author:     " + author1 + "\n" +
                "AuthorDate: " + date1 + "\n" +
                "Commit:     " + author1 + "\n" +
                "CommitDate: " + date1 + "\n" +
                "\n" +
                "    patch from somebody <user.name@example.com>:\n" +
                "    \n" +
                "    commit message.\n" +
                "    \n" +
                "    \n" +
                "    git-svn-id: http://host.example.com/svn/product/trunk/server@324-fdws-2342-fsdaf-gds-234\n" +
                "\n" +
                "commit " + commitId2 + "\n" +
                "Author:     " + author2 + "\n" +
                "AuthorDate: " + date2 + "\n" +
                "Commit:     " + author2 + "\n" +
                "CommitDate: " + date2 + "\n" +
                "\n" +
                "     r123@branch:  username | some date\n" +
                "     some comment\n" +
                "    \n" +
                "    \n" +
                "    git-svn-id: http://host.example.com/svn/product/trunk/server@324-fdws-2342-fsdaf-gds-234\n" +
                "\n" +
                "commit " + commitId3 + "\n" +
                "Author:     " + author1 + "\n" +
                "AuthorDate: " + date1 + "\n" +
                "Commit:     " + author2 + "\n" +
                "CommitDate: " + date2 + "\n" +
                "\n" +
                "    some comment\n" +
                "    \n" +
                "    git-svn-id: http://host.example.com/svn/product/trunk/server@324-fdws-2342-fsdaf-gds-234\n";

        History result = instance.parse(output);
        assertNotNull(result);
        assertTrue("Should contain three history entries", 3 == result.getHistoryEntries().size());
        HistoryEntry e0 = result.getHistoryEntries().get(0);
        assertEquals(commitId1, e0.getRevision());
        assertEquals(author1, e0.getAuthor());
        assertEquals(0, e0.getFiles().size());
        HistoryEntry e1 = result.getHistoryEntries().get(1);
        assertEquals(commitId2, e1.getRevision());
        assertEquals(author2, e1.getAuthor());
        assertEquals(0, e1.getFiles().size());
        HistoryEntry e2 = result.getHistoryEntries().get(2);
        assertEquals(commitId3, e2.getRevision());
        assertEquals(author1, e2.getAuthor());
        assertEquals(0, e2.getFiles().size());
    }

    /**
     * Parse something that could come out from the git repository
     * 
     * @throws java.lang.Exception
     */
    @Test
    public void parseALaGit() throws Exception {
        String commitId1 = "1a23456789abcdef123456789abcderf123456789";
        String commitId2 = "2a2323487092314kjsdafsad7829342kjhsdf3289";
        String author1 = "username <username@example.com>";
        String author2 = "username2 <username2@example.com>";
        String date1 = "Sun Jan 13 01:12:05 2008 -0700";
        String filename = "filename.c";

        String output = "commit " + commitId1 + "\n" +
                "Author:     " + author1 + "\n" +
                "AuthorDate: " + date1 + "\n" +
                "Commit:     " + author2 + "\n" +
                "CommitDate: " + date1 + "\n" +
                "\n" +
                "    Some heading\n" +
                "    \n" +
                "    First paragraph of text.\n" +
                "    \n" +
                "    Second paragraph\n" +
                "    of text.\n" +
                "    \n" +
                "    Signed-off-by: Somebody <username@example.com>\n" +
                "\n" +
                filename + "\n" +
                "\n" +
                "commit " + commitId2 + "\n" +
                "Author:     " + author2 + "\n" +
                "AuthorDate: " + date1 + "\n" +
                "Commit:     " + author2 + "\n" +
                "CommitDate: " + date1 + "\n" +
                "\n" +
                "    Make \"--somethind\" do something.\n" +
                "    \n" +
                "    This is a full\n" +
                "    paragraph of text\n" +
                "    \n" +
                "    Signed-off-by: Somebody <username@example.com>\n" +
                "\n" +
                filename + "\n";

        History result = instance.parse(output);
        assertNotNull(result);
        assertTrue("Should contain two history entries", 2 == result.getHistoryEntries().size());
        HistoryEntry e0 = result.getHistoryEntries().get(0);
        assertEquals(commitId1, e0.getRevision());
        assertEquals(author1, e0.getAuthor());
        assertEquals(1, e0.getFiles().size());
        assertEquals("/" + filename, e0.getFiles().first());
        assertTrue(e0.getMessage().contains("Some heading"));
        assertTrue(e0.getMessage().contains("Signed-off-by"));
        HistoryEntry e1 = result.getHistoryEntries().get(1);
        assertEquals(commitId2, e1.getRevision());
        assertEquals(author2, e1.getAuthor());
        assertEquals(1, e1.getFiles().size());
        assertEquals("/" + filename, e1.getFiles().first());
        assertTrue(e1.getMessage().contains("paragraph of text"));
        assertTrue(e1.getMessage().contains("Signed-off-by"));
    }

    /**
     * Parse something that could come out from the linux kernel repository
     * 
     * @throws java.lang.Exception
     */
    @Test
    public void parseALaLK() throws Exception {
        String commitId1 = "1a23456789abcdef123456789abcderf123456789";
        String commitId2 = "2a2323487092314kjsdafsad7829342kjhsdf3289";
        String author1 = "username <username@example.com>";
        String author2 = "username2 <username2@example.com>";
        String committer = "committer <committer@example.com>";
        String date1 = "Sun Jan 13 01:12:05 2008 -0700";
        String date2 = "Mon Jan 14 01:12:05 2008 -0800";
        String filename1 = "directory/filename.c";
        String filename2 = "directory/filename.h";

        String output = "commit " + commitId1 + "\n" +
                "Author:     " + author1 + "\n" +
                "AuthorDate: " + date1 + "\n" +
                "Commit:     " + committer + "\n" +
                "CommitDate: " + date2 + "\n" +
                "\n" +
                "    Subject: subject title\n" +
                "    \n" +
                "    sdj fasodjfads jfa.kdsmf asdknf sadlfkm sad fma\n" +
                "    dpojfv adsjv a,s.kdnvlø aok åpwaiorjf aldjfg ladijfg adkgf\n" +
                "    jsdkgfj sadhkjfgs dlkjfg dksjgfh.\n" +
                "    \n" +
                "    djkhfgv ksadhg kdajhg ,dsn \n" +
                "    x,nv ,xmcnvkadsjfnv,. zxmcnv edfhsgdksgf.\n" +
                "    Dsdn ,dn ,dsng .,xcmnvefjhgiorfhgdskhg fdsg dfh sdf\n" +
                "    skdjfas djskdjf ksadjhfn sa.,df .\n" +
                "    \n" +
                "    Zkjd flsdj flksadj fødsakjf asd jfsadijfosdhva.\n" +
                "    \n" +
                "    [user@example.com: something or another]\n" +
                "    Signed-off-by: First Last <username@example.com>\n" +
                "    Cc: Firstr Last <username@example.com>\n" +
                "    Signed-off-by: First Last <username3@example.com>\n" +
                "    Signed-off-by: Pinguin <pingu@example.com>\n" +
                "\n" +
                filename1 + "\n" +
                "\n" +
                "commit " + commitId2 + "\n" +
                "Author:     " + author2 + "\n" +
                "AuthorDate: " + date1 + "\n" +
                "Commit:     " + committer + "\n" +
                "CommitDate: " + date2 + "\n" +
                "\n" +
                "    [PATCH] Subject heading.\n" +
                "    \n" +
                "    Some description of what is to come:\n" +
                "    \n" +
                "      * item 1\n" +
                "      * item 2\n" +
                "      * ...\n" +
                "      * item n\n" +
                "    \n" +
                "    Signed-off-by: User <user@example.com>\n" +
                "    Cc: \"First.Last\" <user2@example.com>\n" +
                "    Signed-off-by: First Last <username3@example.com>\n" +
                "    Signed-off-by: Pinguin <pingu@example.com>\n" +
                "\n" +
                filename1 + "\n" +
                filename2 + "\n";
        History result = instance.parse(output);
        assertNotNull(result);
        assertTrue("Should contain two history entries", 2 == result.getHistoryEntries().size());
        HistoryEntry e0 = result.getHistoryEntries().get(0);
        assertEquals(commitId1, e0.getRevision());
        assertEquals(author1, e0.getAuthor());
        assertEquals(1, e0.getFiles().size());
        assertEquals("/" + filename1, e0.getFiles().first());
        assertTrue(e0.getMessage().contains("subject title"));
        assertTrue(e0.getMessage().contains("Signed-off-by"));
        HistoryEntry e1 = result.getHistoryEntries().get(1);
        assertEquals(commitId2, e1.getRevision());
        assertEquals(author2, e1.getAuthor());
        assertEquals(2, e1.getFiles().size());
        assertEquals("/" + filename1, e1.getFiles().first());
        assertEquals("/" + filename2, e1.getFiles().last());
        assertTrue(e1.getMessage().contains("[PATCH]"));
        assertTrue(e1.getMessage().contains("Signed-off-by"));
    }
}