if not repo.revisions or repo.alias == 'git':

            c.jsdata = json.dumps([])

            return

        max_rev = repo.revisions[-1]

        offset = 1 if p == 1 else  ((p - 1) * revcount + 1)

        rev_start = repo.revisions[(-1 * offset)]

        revcount = min(max_rev, revcount)

        rev_end = max(0, rev_start - revcount)

        c.dag = tree = list(colored(dag))

        data = []

        for (id, type, ctx, vtx, edges) in tree:

            if type != CHANGESET:

                continue

            data.append(('', vtx, edges))

        c.jsdata = json.dumps(data)

from rhodecode.tests import *

ARCHIVE_SPECS = {

    '.zip': ('application/zip', 'zip', ''),

}

class TestFilesController(TestController):

    def test_index(self):

        self.log_user()

        response = self.app.get(url(controller='files', action='index',

                                    repo_name=HG_REPO,

                                    revision='tip',

                                    f_path='/'))

        # Test response...