~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2008 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 chunks_to_lines."""

from bzrlib import tests

def load_tests(standard_tests, module, loader):

    # parameterize all tests in this module

    import bzrlib._chunks_to_lines_py as py_module

    scenarios = [('python', {'module': py_module})]

    if CompiledChunksToLinesFeature.available():

        import bzrlib._chunks_to_lines_pyx as c_module

        scenarios.append(('C', {'module': c_module}))

    else:

        # the compiled module isn't available, so we add a failing test

        class FailWithoutFeature(tests.TestCase):

            def test_fail(self):

                self.requireFeature(CompiledChunksToLinesFeature)

        standard_tests.addTest(FailWithoutFeature("test_fail"))

    return tests.multiply_tests(standard_tests, scenarios, loader.suiteClass())

class _CompiledChunksToLinesFeature(tests.Feature):

    def _probe(self):

        try:

            import bzrlib._chunks_to_lines_pyx

        except ImportError:

            return False

        return True

    def feature_name(self):

        return 'bzrlib._chunks_to_lines_pyx'

CompiledChunksToLinesFeature = _CompiledChunksToLinesFeature()

class TestChunksToLines(tests.TestCase):

    module = None # Filled in by test parameterization

    def assertChunksToLines(self, lines, chunks, alreadly_lines=False):

        result = self.module.chunks_to_lines(chunks)

        self.assertEqual(lines, result)

        if alreadly_lines:

            self.assertIs(chunks, result)

    def test_fulltext_chunk_to_lines(self):

        self.assertChunksToLines(['foo\n', 'bar\r\n', 'ba\rz\n'],

                                 ['foo\nbar\r\nba\rz\n'])

        self.assertChunksToLines(['foobarbaz\n'], ['foobarbaz\n'],

                                 alreadly_lines=True)

        self.assertChunksToLines(['foo\n', 'bar\n', '\n', 'baz\n', '\n', '\n'],

                                 ['foo\nbar\n\nbaz\n\n\n'])

        self.assertChunksToLines(['foobarbaz'], ['foobarbaz'],

                                 alreadly_lines=True)

        self.assertChunksToLines(['foobarbaz'], ['foo', 'bar', 'baz'])

    def test_newlines(self):

        self.assertChunksToLines(['\n'], ['\n'], alreadly_lines=True)

        self.assertChunksToLines(['\n'], ['', '\n', ''])

        self.assertChunksToLines(['\n'], ['\n', ''])

        self.assertChunksToLines(['\n'], ['', '\n'])

        self.assertChunksToLines(['\n', '\n', '\n'], ['\n\n\n'])

        self.assertChunksToLines(['\n', '\n', '\n'], ['\n', '\n', '\n'],

                                 alreadly_lines=True)

    def test_lines_to_lines(self):

        self.assertChunksToLines(['foo\n', 'bar\r\n', 'ba\rz\n'],

                                 ['foo\n', 'bar\r\n', 'ba\rz\n'],

                                 alreadly_lines=True)

    def test_no_final_newline(self):

        self.assertChunksToLines(['foo\n', 'bar\r\n', 'ba\rz'],

                                 ['foo\nbar\r\nba\rz'])

        self.assertChunksToLines(['foo\n', 'bar\r\n', 'ba\rz'],

                                 ['foo\n', 'bar\r\n', 'ba\rz'],

                                 alreadly_lines=True)

        self.assertChunksToLines(('foo\n', 'bar\r\n', 'ba\rz'),

                                 ('foo\n', 'bar\r\n', 'ba\rz'),

                                 alreadly_lines=True)

        self.assertChunksToLines([], [], alreadly_lines=True)

        self.assertChunksToLines(['foobarbaz'], ['foobarbaz'],

                                 alreadly_lines=True)

        self.assertChunksToLines([], [''])

    def test_mixed(self):

        self.assertChunksToLines(['foo\n', 'bar\r\n', 'ba\rz'],

                                 ['foo\n', 'bar\r\nba\r', 'z'])

        self.assertChunksToLines(['foo\n', 'bar\r\n', 'ba\rz'],

                                 ['foo\nb', 'a', 'r\r\nba\r', 'z'])

        self.assertChunksToLines(['foo\n', 'bar\r\n', 'ba\rz'],

                                 ['foo\nbar\r\nba', '\r', 'z'])

        self.assertChunksToLines(['foo\n', 'bar\r\n', 'ba\rz'],

                                 ['foo\n', '', 'bar\r\nba', '\r', 'z'])

        self.assertChunksToLines(['foo\n', 'bar\r\n', 'ba\rz\n'],

                                 ['foo\n', 'bar\r\n', 'ba\rz\n', ''])

        self.assertChunksToLines(['foo\n', 'bar\r\n', 'ba\rz\n'],

                                 ['foo\n', 'bar', '\r\n', 'ba\rz\n'])

    def test_not_lines(self):

        # We should raise a TypeError, not crash

        self.assertRaises(TypeError, self.module.chunks_to_lines,

                          object())

        self.assertRaises(TypeError, self.module.chunks_to_lines,

                          [object()])

        self.assertRaises(TypeError, self.module.chunks_to_lines,

                          ['foo', object()])