# Copyright (C) 2007, 2009-2012 Canonical Ltd
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# 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 of the 'brz pack' command."""

from breezy import tests


class TestPack(tests.TestCaseWithTransport):
    def _make_versioned_file(self, path, line_prefix="line", total_lines=10):
        self._make_file(path, line_prefix, total_lines, versioned=True)

    def _make_file(self, path, line_prefix, total_lines, versioned):
        text = ""
        for i in range(total_lines):
            text += line_prefix + str(i + 1) + "\n"

        with open(path, "w") as f:
            f.write(text)
        if versioned:
            self.run_bzr(["add", path])
            self.run_bzr(["ci", "-m", '"' + path + '"'])

    def _update_file(self, path, text, checkin=True):
        """Append text to file 'path' and check it in."""
        with open(path, "a") as f:
            f.write(text)

        if checkin:
            self.run_bzr(["ci", path, "-m", '"' + path + '"'])

    def test_pack_silent(self):
        """Pack command has no intrinsic output."""
        self.make_branch(".")
        out, err = self.run_bzr("pack")
        self.assertEqual("", out)
        self.assertEqual("", err)

    def test_pack_accepts_branch_url(self):
        """Pack command accepts the url to a branch."""
        self.make_branch("branch")
        out, err = self.run_bzr("pack branch")
        self.assertEqual("", out)
        self.assertEqual("", err)

    def test_pack_accepts_repo_url(self):
        """Pack command accepts the url to a branch."""
        self.make_repository("repository")
        out, err = self.run_bzr("pack repository")
        self.assertEqual("", out)
        self.assertEqual("", err)

    def test_pack_clean_obsolete_packs(self):
        """Ensure --clean-obsolete-packs removes obsolete pack files."""
        wt = self.make_branch_and_tree(".")
        t = wt.branch.repository.controldir.transport

        # do multiple commits to ensure that obsolete packs are created
        # by 'brz pack'
        self._make_versioned_file("file0.txt")
        for i in range(5):
            self._update_file("file0.txt", "HELLO %d\n" % i)

        out, err = self.run_bzr(["pack", "--clean-obsolete-packs"])

        pack_names = t.list_dir("repository/obsolete_packs")
        self.assertTrue(len(pack_names) == 0)
