~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2009 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 for eol conversion."""

import sys

from cStringIO import StringIO

from bzrlib import rules, status

from bzrlib.tests import TestSkipped

from bzrlib.tests.per_workingtree import TestCaseWithWorkingTree

from bzrlib.workingtree import WorkingTree

# Sample files

_sample_text         = """hello\nworld\r\n"""

_sample_text_on_win  = """hello\r\nworld\r\n"""

_sample_text_on_unix = """hello\nworld\n"""

_sample_binary       = """hello\nworld\r\n\x00"""

_sample_clean_lf     = _sample_text_on_unix

_sample_clean_crlf   = _sample_text_on_win

# Lists of formats for each storage policy

_LF_IN_REPO = ['native', 'lf', 'crlf']

_CRLF_IN_REPO = [ '%s-with-crlf-in-repo' % (f,) for f in _LF_IN_REPO]

class TestEolConversion(TestCaseWithWorkingTree):

    def setUp(self):

        # formats that don't support content filtering can skip these tests

        fmt = self.workingtree_format

        f = getattr(fmt, 'supports_content_filtering')

        if f is None:

            raise TestSkipped("format %s doesn't declare whether it "

                "supports content filtering, assuming not" % fmt)

        if not f():

            raise TestSkipped("format %s doesn't support content filtering"

                % fmt)

        super(TestEolConversion, self).setUp()

    def patch_rules_searcher(self, eol):

        """Patch in a custom rules searcher with a given eol setting."""

        if eol is None:

            WorkingTree._get_rules_searcher = self.real_rules_searcher

        else:

            def custom_eol_rules_searcher(tree, default_searcher):

                return rules._IniBasedRulesSearcher([

                    '[name *]\n',

                    'eol=%s\n' % eol,

                    ])

            WorkingTree._get_rules_searcher = custom_eol_rules_searcher

    def prepare_tree(self, content, eol=None):

        """Prepare a working tree and commit some content."""

        self.real_rules_searcher = self.overrideAttr(

            WorkingTree, '_get_rules_searcher')

        self.patch_rules_searcher(eol)

        t = self.make_branch_and_tree('tree1')

        self.build_tree_contents([('tree1/file1', content)])

        t.add('file1', 'file1-id')

        t.commit("add file1")

        basis = t.basis_tree()

        basis.lock_read()

        self.addCleanup(basis.unlock)

        return t, basis

    def assertNewContentForSetting(self, wt, eol, expected_unix,

        expected_win, roundtrip):

        """Clone a working tree and check the convenience content.

        If roundtrip is True, status and commit should see no changes.

        """

        if expected_win is None:

            expected_win = expected_unix

        self.patch_rules_searcher(eol)

        wt2 = wt.bzrdir.sprout('tree-%s' % eol).open_workingtree()

        # To see exactly what got written to disk, we need an unfiltered read

        content = wt2.get_file('file1-id', filtered=False).read()

        if sys.platform == 'win32':

            self.assertEqual(expected_win, content)

        else:

            self.assertEqual(expected_unix, content)

        # Confirm that status thinks nothing has changed if the text roundtrips

        if roundtrip:

            status_io = StringIO()

            status.show_tree_status(wt2, to_file=status_io)

            self.assertEqual('', status_io.getvalue())

    def assertContent(self, wt, basis, expected_raw, expected_unix,

        expected_win, roundtrip_to=None):

        """Check the committed content and content in cloned trees.

        :param roundtrip_to: the set of formats (excluding exact) we

          can round-trip to or None for all

        """

        basis_content = basis.get_file('file1-id').read()

        self.assertEqual(expected_raw, basis_content)

        # No setting and exact should always roundtrip

        self.assertNewContentForSetting(wt, None,

            expected_raw, expected_raw, roundtrip=True)

        self.assertNewContentForSetting(wt, 'exact',

            expected_raw, expected_raw, roundtrip=True)

        # Roundtripping is otherwise dependent on whether the original

        # text is clean - mixed line endings will prevent it. It also

        # depends on whether the format in the repository is being changed.

        if roundtrip_to is None:

            roundtrip_to = _LF_IN_REPO + _CRLF_IN_REPO

        self.assertNewContentForSetting(wt, 'native',

            expected_unix, expected_win, 'native' in roundtrip_to)

        self.assertNewContentForSetting(wt, 'lf',

            expected_unix, expected_unix, 'lf' in roundtrip_to)

        self.assertNewContentForSetting(wt, 'crlf',

            expected_win, expected_win, 'crlf' in roundtrip_to)

        self.assertNewContentForSetting(wt, 'native-with-crlf-in-repo',

            expected_unix, expected_win,

            'native-with-crlf-in-repo' in roundtrip_to)

        self.assertNewContentForSetting(wt, 'lf-with-crlf-in-repo',

            expected_unix, expected_unix,

            'lf-with-crlf-in-repo' in roundtrip_to)

        self.assertNewContentForSetting(wt, 'crlf-with-crlf-in-repo',

            expected_win, expected_win,

            'crlf-with-crlf-in-repo' in roundtrip_to)

    # Test binary files. These always roundtrip.

    def test_eol_no_rules_binary(self):

        wt, basis = self.prepare_tree(_sample_binary)

        self.assertContent(wt, basis, _sample_binary, _sample_binary,

            _sample_binary)

    def test_eol_exact_binary(self):

        wt, basis = self.prepare_tree(_sample_binary, eol='exact')

        self.assertContent(wt, basis, _sample_binary, _sample_binary,

            _sample_binary)

    def test_eol_native_binary(self):

        wt, basis = self.prepare_tree(_sample_binary, eol='native')

        self.assertContent(wt, basis, _sample_binary, _sample_binary,

            _sample_binary)

    def test_eol_lf_binary(self):

        wt, basis = self.prepare_tree(_sample_binary, eol='lf')

        self.assertContent(wt, basis, _sample_binary, _sample_binary,

            _sample_binary)

    def test_eol_crlf_binary(self):

        wt, basis = self.prepare_tree(_sample_binary, eol='crlf')

        self.assertContent(wt, basis, _sample_binary, _sample_binary,

            _sample_binary)

    def test_eol_native_with_crlf_in_repo_binary(self):

        wt, basis = self.prepare_tree(_sample_binary,

            eol='native-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_binary, _sample_binary,

            _sample_binary)

    def test_eol_lf_with_crlf_in_repo_binary(self):

        wt, basis = self.prepare_tree(_sample_binary,

            eol='lf-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_binary, _sample_binary,

            _sample_binary)

    def test_eol_crlf_with_crlf_in_repo_binary(self):

        wt, basis = self.prepare_tree(_sample_binary,

            eol='crlf-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_binary, _sample_binary,

            _sample_binary)

    # Test text with mixed line endings ("dirty text").

    # This doesn't roundtrip so status always thinks something has changed.

    def test_eol_no_rules_dirty(self):

        wt, basis = self.prepare_tree(_sample_text)

        self.assertContent(wt, basis, _sample_text,

            _sample_text_on_unix, _sample_text_on_win, roundtrip_to=[])

    def test_eol_exact_dirty(self):

        wt, basis = self.prepare_tree(_sample_text, eol='exact')

        self.assertContent(wt, basis, _sample_text,

            _sample_text_on_unix, _sample_text_on_win, roundtrip_to=[])

    def test_eol_native_dirty(self):

        wt, basis = self.prepare_tree(_sample_text, eol='native')

        self.assertContent(wt, basis, _sample_text_on_unix,

            _sample_text_on_unix, _sample_text_on_win, roundtrip_to=[])

    def test_eol_lf_dirty(self):

        wt, basis = self.prepare_tree(_sample_text, eol='lf')

        self.assertContent(wt, basis, _sample_text_on_unix,

            _sample_text_on_unix, _sample_text_on_win, roundtrip_to=[])

    def test_eol_crlf_dirty(self):

        wt, basis = self.prepare_tree(_sample_text, eol='crlf')

        self.assertContent(wt, basis, _sample_text_on_unix,

            _sample_text_on_unix, _sample_text_on_win, roundtrip_to=[])

    def test_eol_native_with_crlf_in_repo_dirty(self):

        wt, basis = self.prepare_tree(_sample_text,

            eol='native-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_text_on_win,

            _sample_text_on_unix, _sample_text_on_win, roundtrip_to=[])

    def test_eol_lf_with_crlf_in_repo_dirty(self):

        wt, basis = self.prepare_tree(_sample_text,

            eol='lf-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_text_on_win,

            _sample_text_on_unix, _sample_text_on_win, roundtrip_to=[])

    def test_eol_crlf_with_crlf_in_repo_dirty(self):

        wt, basis = self.prepare_tree(_sample_text,

            eol='crlf-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_text_on_win,

            _sample_text_on_unix, _sample_text_on_win, roundtrip_to=[])

    # Test text with clean line endings, either always lf or always crlf.

    # This selectively roundtrips (based on what's stored in the repo).

    def test_eol_no_rules_clean_lf(self):

        wt, basis = self.prepare_tree(_sample_clean_lf)

        self.assertContent(wt, basis, _sample_clean_lf,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_LF_IN_REPO)

    def test_eol_no_rules_clean_crlf(self):

        wt, basis = self.prepare_tree(_sample_clean_crlf)

        self.assertContent(wt, basis, _sample_clean_crlf,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_CRLF_IN_REPO)

    def test_eol_exact_clean_lf(self):

        wt, basis = self.prepare_tree(_sample_clean_lf, eol='exact')

        self.assertContent(wt, basis, _sample_clean_lf,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_LF_IN_REPO)

    def test_eol_exact_clean_crlf(self):

        wt, basis = self.prepare_tree(_sample_clean_crlf, eol='exact')

        self.assertContent(wt, basis, _sample_clean_crlf,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_CRLF_IN_REPO)

    def test_eol_native_clean_lf(self):

        wt, basis = self.prepare_tree(_sample_clean_lf, eol='native')

        self.assertContent(wt, basis, _sample_text_on_unix,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_LF_IN_REPO)

    def test_eol_native_clean_crlf(self):

        wt, basis = self.prepare_tree(_sample_clean_crlf, eol='native')

        self.assertContent(wt, basis, _sample_text_on_unix,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_LF_IN_REPO)

    def test_eol_lf_clean_lf(self):

        wt, basis = self.prepare_tree(_sample_clean_lf, eol='lf')

        self.assertContent(wt, basis, _sample_text_on_unix,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_LF_IN_REPO)

    def test_eol_lf_clean_crlf(self):

        wt, basis = self.prepare_tree(_sample_clean_crlf, eol='lf')

        self.assertContent(wt, basis, _sample_text_on_unix,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_LF_IN_REPO)

    def test_eol_crlf_clean_lf(self):

        wt, basis = self.prepare_tree(_sample_clean_lf, eol='crlf')

        self.assertContent(wt, basis, _sample_text_on_unix,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_LF_IN_REPO)

    def test_eol_crlf_clean_crlf(self):

        wt, basis = self.prepare_tree(_sample_clean_crlf, eol='crlf')

        self.assertContent(wt, basis, _sample_text_on_unix,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_LF_IN_REPO)

    def test_eol_native_with_crlf_in_repo_clean_lf(self):

        wt, basis = self.prepare_tree(_sample_clean_lf,

            eol='native-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_text_on_win,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_CRLF_IN_REPO)

    def test_eol_native_with_crlf_in_repo_clean_crlf(self):

        wt, basis = self.prepare_tree(_sample_clean_crlf,

            eol='native-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_text_on_win,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_CRLF_IN_REPO)

    def test_eol_lf_with_crlf_in_repo_clean_lf(self):

        wt, basis = self.prepare_tree(_sample_clean_lf,

            eol='lf-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_text_on_win,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_CRLF_IN_REPO)

    def test_eol_lf_with_crlf_in_repo_clean_crlf(self):

        wt, basis = self.prepare_tree(_sample_clean_crlf,

            eol='lf-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_text_on_win,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_CRLF_IN_REPO)

    def test_eol_crlf_with_crlf_in_repo_clean_lf(self):

        wt, basis = self.prepare_tree(_sample_clean_lf,

            eol='crlf-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_text_on_win,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_CRLF_IN_REPO)

    def test_eol_crlf_with_crlf_in_repo_clean_crlf(self):

        wt, basis = self.prepare_tree(_sample_clean_crlf,

            eol='crlf-with-crlf-in-repo')

        self.assertContent(wt, basis, _sample_text_on_win,

            _sample_text_on_unix, _sample_text_on_win,

            roundtrip_to=_CRLF_IN_REPO)