dulwich/dulwich/tests/test_objects.py

# test_objects.py -- tests for objects.py
# Copyright (C) 2007 James Westby <jw+debian@jameswestby.net>
# 
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2
# of the License or (at your option) any later version of 
# the License.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA  02110-1301, USA.


"""Tests for git base objects."""


import os
import stat
import unittest

from dulwich.objects import (
    Blob,
    Tree,
    Commit,
    Tag,
    format_timezone,
    hex_to_sha,
    parse_timezone,
    )

a_sha = '6f670c0fb53f9463760b7295fbb814e965fb20c8'
b_sha = '2969be3e8ee1c0222396a5611407e4769f14e54b'
c_sha = '954a536f7819d40e6f637f849ee187dd10066349'
tree_sha = '70c190eb48fa8bbb50ddc692a17b44cb781af7f6'
tag_sha = '71033db03a03c6a36721efcf1968dd8f8e0cf023'

class BlobReadTests(unittest.TestCase):
    """Test decompression of blobs"""
  
    def get_sha_file(self, obj, base, sha):
        return obj.from_file(os.path.join(os.path.dirname(__file__),
                                          'data', base, sha))
  
    def get_blob(self, sha):
        """Return the blob named sha from the test data dir"""
        return self.get_sha_file(Blob, 'blobs', sha)
  
    def get_tree(self, sha):
        return self.get_sha_file(Tree, 'trees', sha)
  
    def get_tag(self, sha):
        return self.get_sha_file(Tag, 'tags', sha)
  
    def commit(self, sha):
        return self.get_sha_file(Commit, 'commits', sha)
  
    def test_decompress_simple_blob(self):
        b = self.get_blob(a_sha)
        self.assertEqual(b.data, 'test 1\n')
        self.assertEqual(b.sha().hexdigest(), a_sha)
  
    def test_hash(self):
        b = self.get_blob(a_sha)
        self.assertEqual(hash(b.id), hash(b))

    def test_parse_empty_blob_object(self):
        sha = 'e69de29bb2d1d6434b8b29ae775ad8c2e48c5391'
        b = self.get_blob(sha)
        self.assertEqual(b.data, '')
        self.assertEqual(b.id, sha)
        self.assertEqual(b.sha().hexdigest(), sha)
  
    def test_create_blob_from_string(self):
        string = 'test 2\n'
        b = Blob.from_string(string)
        self.assertEqual(b.data, string)
        self.assertEqual(b.sha().hexdigest(), b_sha)
  
    def test_parse_legacy_blob(self):
        string = 'test 3\n'
        b = self.get_blob(c_sha)
        self.assertEqual(b.data, string)
        self.assertEqual(b.sha().hexdigest(), c_sha)
  
    def test_eq(self):
        blob1 = self.get_blob(a_sha)
        blob2 = self.get_blob(a_sha)
        self.assertEqual(blob1, blob2)
  
    def test_read_tree_from_file(self):
        t = self.get_tree(tree_sha)
        self.assertEqual(t.entries()[0], (33188, 'a', a_sha))
        self.assertEqual(t.entries()[1], (33188, 'b', b_sha))
  
    def test_read_tag_from_file(self):
        t = self.get_tag(tag_sha)
        self.assertEqual(t.object, (Commit, '51b668fd5bf7061b7d6fa525f88803e6cfadaa51'))
        self.assertEqual(t.name,'signed')
        self.assertEqual(t.tagger,'Ali Sabil <ali.sabil@gmail.com>')
        self.assertEqual(t.tag_time, 1231203091)
        self.assertEqual(t.message, 'This is a signed tag\n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1.4.9 (GNU/Linux)\n\niEYEABECAAYFAkliqx8ACgkQqSMmLy9u/kcx5ACfakZ9NnPl02tOyYP6pkBoEkU1\n5EcAn0UFgokaSvS371Ym/4W9iJj6vh3h\n=ql7y\n-----END PGP SIGNATURE-----\n')
  
  
    def test_read_commit_from_file(self):
        sha = '60dacdc733de308bb77bb76ce0fb0f9b44c9769e'
        c = self.commit(sha)
        self.assertEqual(c.tree, tree_sha)
        self.assertEqual(c.parents, ['0d89f20333fbb1d2f3a94da77f4981373d8f4310'])
        self.assertEqual(c.author,
            'James Westby <jw+debian@jameswestby.net>')
        self.assertEqual(c.committer,
            'James Westby <jw+debian@jameswestby.net>')
        self.assertEqual(c.commit_time, 1174759230)
        self.assertEqual(c.commit_timezone, 0)
        self.assertEqual(c.author_timezone, 0)
        self.assertEqual(c.message, 'Test commit\n')
  
    def test_read_commit_no_parents(self):
        sha = '0d89f20333fbb1d2f3a94da77f4981373d8f4310'
        c = self.commit(sha)
        self.assertEqual(c.tree, '90182552c4a85a45ec2a835cadc3451bebdfe870')
        self.assertEqual(c.parents, [])
        self.assertEqual(c.author,
            'James Westby <jw+debian@jameswestby.net>')
        self.assertEqual(c.committer,
            'James Westby <jw+debian@jameswestby.net>')
        self.assertEqual(c.commit_time, 1174758034)
        self.assertEqual(c.commit_timezone, 0)
        self.assertEqual(c.author_timezone, 0)
        self.assertEqual(c.message, 'Test commit\n')
  
    def test_read_commit_two_parents(self):
        sha = '5dac377bdded4c9aeb8dff595f0faeebcc8498cc'
        c = self.commit(sha)
        self.assertEqual(c.tree, 'd80c186a03f423a81b39df39dc87fd269736ca86')
        self.assertEqual(c.parents, ['ab64bbdcc51b170d21588e5c5d391ee5c0c96dfd',
                                       '4cffe90e0a41ad3f5190079d7c8f036bde29cbe6'])
        self.assertEqual(c.author,
            'James Westby <jw+debian@jameswestby.net>')
        self.assertEqual(c.committer,
            'James Westby <jw+debian@jameswestby.net>')
        self.assertEqual(c.commit_time, 1174773719)
        self.assertEqual(c.commit_timezone, 0)
        self.assertEqual(c.author_timezone, 0)
        self.assertEqual(c.message, 'Merge ../b\n')
  


class CommitSerializationTests(unittest.TestCase):

    def make_base(self):
        c = Commit()
        c.tree = 'd80c186a03f423a81b39df39dc87fd269736ca86'
        c.parents = ['ab64bbdcc51b170d21588e5c5d391ee5c0c96dfd', '4cffe90e0a41ad3f5190079d7c8f036bde29cbe6']
        c.author = 'James Westby <jw+debian@jameswestby.net>'
        c.committer = 'James Westby <jw+debian@jameswestby.net>'
        c.commit_time = 1174773719
        c.author_time = 1174773719
        c.commit_timezone = 0
        c.author_timezone = 0
        c.message =  'Merge ../b\n'
        return c

    def test_encoding(self):
        c = self.make_base()
        c.encoding = "iso8859-1"
        self.assertTrue("encoding iso8859-1\n" in c.as_raw_string())        

    def test_short_timestamp(self):
        c = self.make_base()
        c.commit_time = 30
        c1 = Commit()
        c1.set_raw_string(c.as_raw_string())
        self.assertEquals(30, c1.commit_time)

    def test_simple(self):
        c = self.make_base()
        self.assertEquals(c.id, '5dac377bdded4c9aeb8dff595f0faeebcc8498cc')
        self.assertEquals(
                'tree d80c186a03f423a81b39df39dc87fd269736ca86\n'
                'parent ab64bbdcc51b170d21588e5c5d391ee5c0c96dfd\n'
                'parent 4cffe90e0a41ad3f5190079d7c8f036bde29cbe6\n'
                'author James Westby <jw+debian@jameswestby.net> 1174773719 +0000\n'
                'committer James Westby <jw+debian@jameswestby.net> 1174773719 +0000\n'
                '\n'
                'Merge ../b\n', c.as_raw_string())

    def test_timezone(self):
        c = self.make_base()
        c.commit_timezone = 5 * 60
        self.assertTrue(" +0005\n" in c.as_raw_string())

    def test_neg_timezone(self):
        c = self.make_base()
        c.commit_timezone = -1 * 3600
        self.assertTrue(" -0100\n" in c.as_raw_string())


class TreeSerializationTests(unittest.TestCase):

    def test_simple(self):
        myhexsha = "d80c186a03f423a81b39df39dc87fd269736ca86"
        x = Tree()
        x["myname"] = (0100755, myhexsha)
        self.assertEquals('100755 myname\0' + hex_to_sha(myhexsha),
                x.as_raw_string())

    def test_tree_dir_sort(self):
        x = Tree()
        x["a.c"] = (0100755, "d80c186a03f423a81b39df39dc87fd269736ca86")
        x["a"] = (stat.S_IFDIR, "d80c186a03f423a81b39df39dc87fd269736ca86")
        x["a/c"] = (stat.S_IFDIR, "d80c186a03f423a81b39df39dc87fd269736ca86")
        self.assertEquals(["a.c", "a", "a/c"], [p[0] for p in x.iteritems()])


class TagSerializeTests(unittest.TestCase):

    def test_serialize_simple(self):
        x = Tag()
        x.tagger = "Jelmer Vernooij <jelmer@samba.org>"
        x.name = "0.1"
        x.message = "Tag 0.1"
        x.object = (3, "d80c186a03f423a81b39df39dc87fd269736ca86")
        x.tag_time = 423423423
        x.tag_timezone = 0
        self.assertEquals("""object d80c186a03f423a81b39df39dc87fd269736ca86
type blob
tag 0.1
tagger Jelmer Vernooij <jelmer@samba.org> 423423423 +0000

Tag 0.1""", x.as_raw_string())


class TagParseTests(unittest.TestCase):

    def test_parse_ctime(self):
        x = Tag()
        x.set_raw_string("""object a38d6181ff27824c79fc7df825164a212eff6a3f
type commit
tag v2.6.22-rc7
tagger Linus Torvalds <torvalds@woody.linux-foundation.org> Sun Jul 1 12:54:34 2007 -0700

Linux 2.6.22-rc7
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (GNU/Linux)

iD8DBQBGiAaAF3YsRnbiHLsRAitMAKCiLboJkQECM/jpYsY3WPfvUgLXkACgg3ql
OK2XeQOiEeXtT76rV4t2WR4=
=ivrA
-----END PGP SIGNATURE-----
""")
        self.assertEquals("Linus Torvalds <torvalds@woody.linux-foundation.org>", x.tagger)
        self.assertEquals("v2.6.22-rc7", x.name)

    def test_parse_no_tagger(self):
        x = Tag()
        x.set_raw_string("""object a38d6181ff27824c79fc7df825164a212eff6a3f
type commit
tag v2.6.22-rc7

Linux 2.6.22-rc7
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (GNU/Linux)

iD8DBQBGiAaAF3YsRnbiHLsRAitMAKCiLboJkQECM/jpYsY3WPfvUgLXkACgg3ql
OK2XeQOiEeXtT76rV4t2WR4=
=ivrA
-----END PGP SIGNATURE-----
""")
        self.assertEquals(None, x.tagger)
        self.assertEquals("v2.6.22-rc7", x.name)


class TimezoneTests(unittest.TestCase):

    def test_parse_timezone_utc(self):
        self.assertEquals(0, parse_timezone("+0000"))

    def test_generate_timezone_utc(self):
        self.assertEquals("+0000", format_timezone(0))

    def test_parse_timezone_cet(self):
        self.assertEquals(60 * 60, parse_timezone("+0100"))

    def test_format_timezone_cet(self):
        self.assertEquals("+0100", format_timezone(60 * 60))

    def test_format_timezone_pdt(self):
        self.assertEquals("-0400", format_timezone(-4 * 60 * 60))

    def test_parse_timezone_pdt(self):
        self.assertEquals(-4 * 60 * 60, parse_timezone("-0400"))

    def test_format_timezone_pdt_half(self):
        self.assertEquals("-0440", format_timezone(int(((-4 * 60) - 40) * 60)))

    def test_parse_timezone_pdt_half(self):
        self.assertEquals(((-4 * 60) - 40) * 60, parse_timezone("-0440"))