~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005-2010 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

"""Test commit message editor.

"""

import os

import sys

from bzrlib import (

    commit,

    errors,

    msgeditor,

    osutils,

    tests,

    trace,

    )

from bzrlib.branch import Branch

from bzrlib.config import ensure_config_dir_exists, config_filename

from bzrlib.msgeditor import (

    make_commit_message_template_encoded,

    edit_commit_message_encoded

)

from bzrlib.tests import (

    TestCaseInTempDir,

    TestCaseWithTransport,

    TestNotApplicable,

    TestSkipped,

    multiply_tests,

    probe_bad_non_ascii,

    split_suite_by_re,

    )

from bzrlib.tests.EncodingAdapter import encoding_scenarios

from bzrlib.trace import mutter

def load_tests(standard_tests, module, loader):

    """Parameterize the test for tempfile creation with different encodings."""

    to_adapt, result = split_suite_by_re(standard_tests,

        "test__create_temp_file_with_commit_template_in_unicode_dir")

    return multiply_tests(to_adapt, encoding_scenarios, result)

class MsgEditorTest(TestCaseWithTransport):

    def make_uncommitted_tree(self):

        """Build a branch with uncommitted unicode named changes in the cwd."""

        working_tree = self.make_branch_and_tree('.')

        b = working_tree.branch

        filename = u'hell\u00d8'

        try:

            self.build_tree_contents([(filename, 'contents of hello')])

        except UnicodeEncodeError:

            raise TestSkipped("can't build unicode working tree in "

                "filesystem encoding %s" % sys.getfilesystemencoding())

        working_tree.add(filename)

        return working_tree

    def test_commit_template(self):

        """Test building a commit message template"""

        working_tree = self.make_uncommitted_tree()

        template = msgeditor.make_commit_message_template(working_tree,

                                                                 None)

        self.assertEqualDiff(template,

u"""\

added:

  hell\u00d8

""")

    def make_multiple_pending_tree(self):

        from bzrlib import config

        config.GlobalConfig().set_user_option('email',

                                              'Bilbo Baggins <bb@hobbit.net>')

        tree = self.make_branch_and_tree('a')

        tree.commit('Initial checkin.', timestamp=1230912900, timezone=0)

        tree2 = tree.bzrdir.clone('b').open_workingtree()

        tree.commit('Minor tweak.', timestamp=1231977840, timezone=0)

        tree2.commit('Feature X work.', timestamp=1233186240, timezone=0)

        tree3 = tree2.bzrdir.clone('c').open_workingtree()

        tree2.commit('Feature X finished.', timestamp=1233187680, timezone=0)

        tree3.commit('Feature Y, based on initial X work.',

                     timestamp=1233285960, timezone=0)

        tree.merge_from_branch(tree2.branch)

        tree.merge_from_branch(tree3.branch, force=True)

        return tree

    def test_commit_template_pending_merges(self):

        """Test building a commit message template when there are pending

        merges.  The commit message should show all pending merge revisions,

        as does 'status -v', not only the merge tips.

        """

        working_tree = self.make_multiple_pending_tree()

        template = msgeditor.make_commit_message_template(working_tree, None)

        self.assertEqualDiff(template,

u"""\

pending merges:

  Bilbo Baggins 2009-01-29 Feature X finished.

    Bilbo Baggins 2009-01-28 Feature X work.

  Bilbo Baggins 2009-01-30 Feature Y, based on initial X work.

""")

    def test_commit_template_encoded(self):

        """Test building a commit message template"""

        working_tree = self.make_uncommitted_tree()

        template = make_commit_message_template_encoded(working_tree,

                                                        None,

                                                        output_encoding='utf8')

        self.assertEqualDiff(template,

u"""\

added:

  hell\u00d8

""".encode("utf8"))

    def test_commit_template_and_diff(self):

        """Test building a commit message template"""

        working_tree = self.make_uncommitted_tree()

        template = make_commit_message_template_encoded(working_tree,

                                                        None,

                                                        diff=True,

                                                        output_encoding='utf8')

        self.assertTrue("""\

@@ -0,0 +1,1 @@

+contents of hello

""" in template)

        self.assertTrue(u"""\

added:

  hell\u00d8

""".encode('utf8') in template)

    def make_do_nothing_editor(self):

        if sys.platform == "win32":

            f = file('fed.bat', 'w')

            f.write('@rem dummy fed')

            f.close()

            return 'fed.bat'

        else:

            f = file('fed.sh', 'wb')

            f.write('#!/bin/sh\n')

            f.close()

            os.chmod('fed.sh', 0755)

            return './fed.sh'

    def test_run_editor(self):

        os.environ['BZR_EDITOR'] = self.make_do_nothing_editor()

        self.assertEqual(True, msgeditor._run_editor(''),

                         'Unable to run dummy fake editor')

    def make_fake_editor(self, message='test message from fed\\n'):

        """Set up environment so that an editor will be a known script.

        Sets up BZR_EDITOR so that if an editor is spawned it will run a

        script that just adds a known message to the start of the file.

        """

        f = file('fed.py', 'wb')

        f.write('#!%s\n' % sys.executable)

        f.write("""\

# coding=utf-8

import sys

if len(sys.argv) == 2:

    fn = sys.argv[1]

    f = file(fn, 'rb')

    s = f.read()

    f.close()

    f = file(fn, 'wb')

    f.write('%s')

    f.write(s)

    f.close()

""" % (message, ))

        f.close()

        if sys.platform == "win32":

            # [win32] make batch file and set BZR_EDITOR

            f = file('fed.bat', 'w')

            f.write("""\

@echo off

"%s" fed.py %%1

""" % sys.executable)

            f.close()

            os.environ['BZR_EDITOR'] = 'fed.bat'

        else:

            # [non-win32] make python script executable and set BZR_EDITOR

            os.chmod('fed.py', 0755)

            os.environ['BZR_EDITOR'] = './fed.py'

    def test_edit_commit_message(self):

        working_tree = self.make_uncommitted_tree()

        self.make_fake_editor()

        mutter('edit_commit_message without infotext')

        self.assertEqual('test message from fed\n',

                         msgeditor.edit_commit_message(''))

        mutter('edit_commit_message with ascii string infotext')

        self.assertEqual('test message from fed\n',

                         msgeditor.edit_commit_message('spam'))

        mutter('edit_commit_message with unicode infotext')

        self.assertEqual('test message from fed\n',

                         msgeditor.edit_commit_message(u'\u1234'))

        tmpl = edit_commit_message_encoded(u'\u1234'.encode("utf8"))

        self.assertEqual('test message from fed\n', tmpl)

    def test_start_message(self):

        self.make_uncommitted_tree()

        self.make_fake_editor()

        self.assertEqual('test message from fed\nstart message\n',

                         msgeditor.edit_commit_message('',

                                              start_message='start message\n'))

        self.assertEqual('test message from fed\n',

                         msgeditor.edit_commit_message('',

                                              start_message=''))

    def test_deleted_commit_message(self):

        working_tree = self.make_uncommitted_tree()

        if sys.platform == 'win32':

            os.environ['BZR_EDITOR'] = 'cmd.exe /c del'

        else:

            os.environ['BZR_EDITOR'] = 'rm'

        self.assertRaises((IOError, OSError), msgeditor.edit_commit_message, '')

    def test__get_editor(self):

        # Test that _get_editor can return a decent list of items

        bzr_editor = os.environ.get('BZR_EDITOR')

        visual = os.environ.get('VISUAL')

        editor = os.environ.get('EDITOR')

        try:

            os.environ['BZR_EDITOR'] = 'bzr_editor'

            os.environ['VISUAL'] = 'visual'

            os.environ['EDITOR'] = 'editor'

            ensure_config_dir_exists()

            f = open(config_filename(), 'wb')

            f.write('editor = config_editor\n')

            f.close()

            editors = list(msgeditor._get_editor())

            editors = [editor for (editor, cfg_src) in editors]

            self.assertEqual(['bzr_editor', 'config_editor', 'visual',

                              'editor'], editors[:4])

            if sys.platform == 'win32':

                self.assertEqual(['wordpad.exe', 'notepad.exe'], editors[4:])

            else:

                self.assertEqual(['/usr/bin/editor', 'vi', 'pico', 'nano',

                                  'joe'], editors[4:])

        finally:

            # Restore the environment

            if bzr_editor is None:

                del os.environ['BZR_EDITOR']

            else:

                os.environ['BZR_EDITOR'] = bzr_editor

            if visual is None:

                del os.environ['VISUAL']

            else:

                os.environ['VISUAL'] = visual

            if editor is None:

                del os.environ['EDITOR']

            else:

                os.environ['EDITOR'] = editor

    def test__run_editor_EACCES(self):

        """If running a configured editor raises EACESS, the user is warned."""

        os.environ['BZR_EDITOR'] = 'eacces.py'

        f = file('eacces.py', 'wb')

        f.write('# Not a real editor')

        f.close()

        # Make the fake editor unreadable (and unexecutable)

        os.chmod('eacces.py', 0)

        # Set $EDITOR so that _run_editor will terminate before trying real

        # editors.

        os.environ['EDITOR'] = self.make_do_nothing_editor()

        # Call _run_editor, capturing mutter.warning calls.

        warnings = []

        def warning(*args):

            if len(args) > 1:

                warnings.append(args[0] % args[1:])

            else:

                warnings.append(args[0])

        _warning = trace.warning

        trace.warning = warning

        try:

            msgeditor._run_editor('')

        finally:

            trace.warning = _warning

        self.assertStartsWith(warnings[0], 'Could not start editor "eacces.py"')

    def test__create_temp_file_with_commit_template(self):

        # check that commit template written properly

        # and has platform native line-endings (CRLF on win32)

        create_file = msgeditor._create_temp_file_with_commit_template

        msgfilename, hasinfo = create_file('infotext','----','start message')

        self.assertNotEqual(None, msgfilename)

        self.assertTrue(hasinfo)

        expected = os.linesep.join(['start message',

                                    '',

                                    '',

                                    '----',

                                    '',

                                    'infotext'])

        self.assertFileEqual(expected, msgfilename)

    def test__create_temp_file_with_commit_template_in_unicode_dir(self):

        self.requireFeature(tests.UnicodeFilenameFeature)

        if hasattr(self, 'info'):

            os.mkdir(self.info['directory'])

            os.chdir(self.info['directory'])

            msgeditor._create_temp_file_with_commit_template('infotext')

        else:

            raise TestNotApplicable('Test run elsewhere with non-ascii data.')

    def test__create_temp_file_with_empty_commit_template(self):

        # empty file

        create_file = msgeditor._create_temp_file_with_commit_template

        msgfilename, hasinfo = create_file('')

        self.assertNotEqual(None, msgfilename)

        self.assertFalse(hasinfo)

        self.assertFileEqual('', msgfilename)

    def test_unsupported_encoding_commit_message(self):

        old_env = osutils.set_or_unset_env('LANG', 'C')

        try:

            # LANG env variable has no effect on Windows

            # but some characters anyway cannot be represented

            # in default user encoding

            char = probe_bad_non_ascii(osutils.get_user_encoding())

            if char is None:

                raise TestSkipped('Cannot find suitable non-ascii character '

                    'for user_encoding (%s)' % osutils.get_user_encoding())

            self.make_fake_editor(message=char)

            working_tree = self.make_uncommitted_tree()

            self.assertRaises(errors.BadCommitMessageEncoding,

                              msgeditor.edit_commit_message, '')

        finally:

            osutils.set_or_unset_env('LANG', old_env)

    def test_generate_commit_message_template_no_hooks(self):

        commit_obj = commit.Commit()

        self.assertIs(None,

            msgeditor.generate_commit_message_template(commit_obj))

    def test_generate_commit_message_template_hook(self):

        msgeditor.hooks.install_named_hook("commit_message_template",

                lambda commit_obj, msg: "save me some typing\n", None)

        commit_obj = commit.Commit()

        self.assertEquals("save me some typing\n",

            msgeditor.generate_commit_message_template(commit_obj))

# GZ 2009-11-17: This wants moving to osutils when the errno checking code is

class TestPlatformErrnoWorkarounds(TestCaseInTempDir):

    """Ensuring workarounds enshrined in code actually serve a purpose"""

    def test_subprocess_call_bad_file(self):

        if sys.platform != "win32":

            raise TestNotApplicable("Workarounds for windows only")

        import subprocess, errno

        ERROR_BAD_EXE_FORMAT = 193

        file("textfile.txt", "w").close()

        e = self.assertRaises(WindowsError, subprocess.call, "textfile.txt")

        # Python2.4 used the 'winerror' as the errno, which confuses a lot of

        # our error trapping code. Make sure that we understand the mapping

        # correctly.

        if sys.version_info >= (2, 5):

            self.assertEqual(e.errno, errno.ENOEXEC)

            self.assertEqual(e.winerror, ERROR_BAD_EXE_FORMAT)

        else:

            self.assertEqual(e.errno, ERROR_BAD_EXE_FORMAT)