def setup_method(self):

        self.repo = GitRepository(TEST_GIT_REPO)

    def test_default_changeset(self):

        tip = self.repo.get_changeset()

        assert tip == self.repo.get_changeset(None)

        assert tip == self.repo.get_changeset('tip')

    def test_root_node(self):

        tip = self.repo.get_changeset()

        assert tip.root is tip.get_node('')

    def test_lazy_fetch(self):

        """

        Test if changeset's nodes expands and are cached as we walk through

        the revision. This test is somewhat hard to write as order of tests

        is a key here. Written by running command after command in a shell.

        """

        commit_id = '2a13f185e4525f9d4b59882791a2d397b90d5ddc'

        assert commit_id in self.repo.revisions

        chset = self.repo.get_changeset(commit_id)

        assert len(chset.nodes) == 0

        root = chset.root

        assert len(chset.nodes) == 1

        assert len(root.nodes) == 8

        # accessing root.nodes updates chset.nodes

        assert len(chset.nodes) == 9

        docs = root.get_node('docs')

        # we haven't yet accessed anything new as docs dir was already cached

        assert len(chset.nodes) == 9

        assert len(docs.nodes) == 8

        # accessing docs.nodes updates chset.nodes

        assert len(chset.nodes) == 17

        assert docs is chset.get_node('docs')

        assert docs is root.nodes[0]

        assert docs is root.dirs[0]

        assert docs is chset.get_node('docs')

    def test_nodes_with_changeset(self):

        commit_id = '2a13f185e4525f9d4b59882791a2d397b90d5ddc'

        chset = self.repo.get_changeset(commit_id)

        root = chset.root

        docs = root.get_node('docs')

        assert docs is chset.get_node('docs')

        api = docs.get_node('api')

        assert api is chset.get_node('docs/api')

        index = api.get_node('index.rst')

        assert index is chset.get_node('docs/api/index.rst')

        assert index is chset.get_node('docs') \

                             .get_node('api') \

                             .get_node('index.rst')

    def test_branch_and_tags(self):

        # Those tests seem to show wrong results:

        # in Git, only heads have a branch - most changesets don't

        rev0 = self.repo.revisions[0]

        chset0 = self.repo.get_changeset(rev0)

        assert chset0.branch is None # should be 'master'?

        assert chset0.branches == [] # should be 'master'?

        assert chset0.tags == []

        rev10 = self.repo.revisions[10]

        chset10 = self.repo.get_changeset(rev10)

        assert chset10.branch is None # should be 'master'?

        assert chset10.branches == [] # should be 'master'?

        assert chset10.tags == []

        rev44 = self.repo.revisions[44]

        chset44 = self.repo.get_changeset(rev44)

        assert chset44.branch is None # should be 'web-branch'?

        assert chset44.branches == [] # should be 'web-branch'?

        tip = self.repo.get_changeset('tip')

        assert 'tip' not in tip.tags # it should be?

        assert not tip.tags # how it is!

    def _test_slices(self, limit, offset):

        count = self.repo.count()

        changesets = self.repo.get_changesets(limit=limit, offset=offset)

        idx = 0

        for changeset in changesets:

            rev = offset + idx

            idx += 1

            rev_id = self.repo.revisions[rev]

            if idx > limit:

                pytest.fail("Exceeded limit already (getting revision %s, "

                    "there are %s total revisions, offset=%s, limit=%s)"

                    % (rev_id, count, offset, limit))

            assert changeset == self.repo.get_changeset(rev_id)

        result = list(self.repo.get_changesets(limit=limit, offset=offset))

        start = offset

        end = limit and offset + limit or None

        sliced = list(self.repo[start:end])

            msg="Comparison failed for limit=%s, offset=%s"

            "(get_changeset returned: %s and sliced: %s"

            % (limit, offset, result, sliced))

    def _test_file_size(self, revision, path, size):

        node = self.repo.get_changeset(revision).get_node(path)

        assert node.is_file()

        assert node.size == size

    def test_file_size(self):

        to_check = (

            ('c1214f7e79e02fc37156ff215cd71275450cffc3',

                'vcs/backends/BaseRepository.py', 502),

            ('d7e0d30fbcae12c90680eb095a4f5f02505ce501',

                'vcs/backends/hg.py', 854),

            ('6e125e7c890379446e98980d8ed60fba87d0f6d1',

                'setup.py', 1068),

            ('d955cd312c17b02143c04fa1099a352b04368118',

                'vcs/backends/base.py', 2921),

            ('ca1eb7957a54bce53b12d1a51b13452f95bc7c7e',

                'vcs/backends/base.py', 3936),

            ('f50f42baeed5af6518ef4b0cb2f1423f3851a941',

                'vcs/backends/base.py', 6189),

        )

        for revision, path, size in to_check:

            self._test_file_size(revision, path, size)

    def _test_dir_size(self, revision, path, size):

        node = self.repo.get_changeset(revision).get_node(path)

        assert node.size == size

    def test_dir_size(self):

        to_check = (

            ('5f2c6ee195929b0be80749243c18121c9864a3b3', '/', 674076),

            ('7ab37bc680b4aa72c34d07b230c866c28e9fc204', '/', 674049),

            ('6892503fb8f2a552cef5f4d4cc2cdbd13ae1cd2f', '/', 671830),

        )

        for revision, path, size in to_check:

            self._test_dir_size(revision, path, size)

    def test_repo_size(self):

        assert self.repo.size == 674076

    def test_file_history(self):

        # we can only check if those revisions are present in the history

        # as we cannot update this test every time file is changed

        files = {

            'setup.py': [

                '54386793436c938cff89326944d4c2702340037d',

                '51d254f0ecf5df2ce50c0b115741f4cf13985dab',

                '998ed409c795fec2012b1c0ca054d99888b22090',

                '5e0eb4c47f56564395f76333f319d26c79e2fb09',

                '0115510b70c7229dbc5dc49036b32e7d91d23acd',

                '7cb3fd1b6d8c20ba89e2264f1c8baebc8a52d36e',

                '2a13f185e4525f9d4b59882791a2d397b90d5ddc',

                '191caa5b2c81ed17c0794bf7bb9958f4dcb0b87e',

                'ff7ca51e58c505fec0dd2491de52c622bb7a806b',

            ],

            'vcs/nodes.py': [

                '33fa3223355104431402a888fa77a4e9956feb3e',

                'fa014c12c26d10ba682fadb78f2a11c24c8118e1',

                'e686b958768ee96af8029fe19c6050b1a8dd3b2b',

                'ab5721ca0a081f26bf43d9051e615af2cc99952f',

                'c877b68d18e792a66b7f4c529ea02c8f80801542',

                '4313566d2e417cb382948f8d9d7c765330356054',

                '6c2303a793671e807d1cfc70134c9ca0767d98c2',

                '54386793436c938cff89326944d4c2702340037d',

                '54000345d2e78b03a99d561399e8e548de3f3203',

                '1c6b3677b37ea064cb4b51714d8f7498f93f4b2b',

                '2d03ca750a44440fb5ea8b751176d1f36f8e8f46',

                '2a08b128c206db48c2f0b8f70df060e6db0ae4f8',

                '30c26513ff1eb8e5ce0e1c6b477ee5dc50e2f34b',

                'ac71e9503c2ca95542839af0ce7b64011b72ea7c',

                '12669288fd13adba2a9b7dd5b870cc23ffab92d2',

                '5a0c84f3e6fe3473e4c8427199d5a6fc71a9b382',

                '12f2f5e2b38e6ff3fbdb5d722efed9aa72ecb0d5',

                '5eab1222a7cd4bfcbabc218ca6d04276d4e27378',

                'f50f42baeed5af6518ef4b0cb2f1423f3851a941',

                'd7e390a45f6aa96f04f5e7f583ad4f867431aa25',

                'f15c21f97864b4f071cddfbf2750ec2e23859414',

                'e906ef056cf539a4e4e5fc8003eaf7cf14dd8ade',

                'ea2b108b48aa8f8c9c4a941f66c1a03315ca1c3b',

                '84dec09632a4458f79f50ddbbd155506c460b4f9',

                '0115510b70c7229dbc5dc49036b32e7d91d23acd',

                '2a13f185e4525f9d4b59882791a2d397b90d5ddc',

                '3bf1c5868e570e39569d094f922d33ced2fa3b2b',

                'b8d04012574729d2c29886e53b1a43ef16dd00a1',

                '6970b057cffe4aab0a792aa634c89f4bebf01441',

                'dd80b0f6cf5052f17cc738c2951c4f2070200d7f',

                'ff7ca51e58c505fec0dd2491de52c622bb7a806b',

            ],

            'vcs/backends/git.py': [

                '4cf116ad5a457530381135e2f4c453e68a1b0105',

                '9a751d84d8e9408e736329767387f41b36935153',

                'cb681fb539c3faaedbcdf5ca71ca413425c18f01',

                '428f81bb652bcba8d631bce926e8834ff49bdcc6',