# Copyright (C) 2006 Canonical Ltd
# Authors: Robert Collins <robert.collins@canonical.com>
#
# 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 the MemoryTree class."""
from bzrlib import errors
from bzrlib.memorytree import MemoryTree
from bzrlib.tests import TestCaseWithTransport
from bzrlib.treebuilder import TreeBuilder
class TestMemoryTree(TestCaseWithTransport):
def test_create_on_branch(self):
"""Creating a mutable tree on a trivial branch works."""
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
self.assertEqual(branch.bzrdir, tree.bzrdir)
self.assertEqual(branch, tree.branch)
self.assertEqual([], tree.get_parent_ids())
def test_create_on_branch_with_content(self):
"""Creating a mutable tree on a non-trivial branch works."""
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
# build some content
tree.lock_write()
builder = TreeBuilder()
builder.start_tree(tree)
builder.build(['foo'])
builder.finish_tree()
rev_id = tree.commit('first post')
tree.unlock()
tree = MemoryTree.create_on_branch(branch)
tree.lock_read()
self.assertEqual([rev_id], tree.get_parent_ids())
self.assertEqual('contents of foo\n',
tree.get_file(tree.path2id('foo')).read())
tree.unlock()
def test_get_root_id(self):
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_write()
try:
tree.add([''])
self.assertIsNot(None, tree.get_root_id())
finally:
tree.unlock()
def test_lock_tree_write(self):
"""Check we can lock_tree_write and unlock MemoryTrees."""
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_tree_write()
tree.unlock()
def test_lock_tree_write_after_read_fails(self):
"""Check that we error when trying to upgrade a read lock to write."""
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_read()
self.assertRaises(errors.ReadOnlyError, tree.lock_tree_write)
tree.unlock()
def test_lock_write(self):
"""Check we can lock_write and unlock MemoryTrees."""
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_write()
tree.unlock()
def test_lock_write_after_read_fails(self):
"""Check that we error when trying to upgrade a read lock to write."""
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_read()
self.assertRaises(errors.ReadOnlyError, tree.lock_write)
tree.unlock()
def test_add_with_kind(self):
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_write()
tree.add(['', 'afile', 'adir'], None,
['directory', 'file', 'directory'])
self.assertEqual('afile', tree.id2path(tree.path2id('afile')))
self.assertEqual('adir', tree.id2path(tree.path2id('adir')))
self.assertFalse(tree.has_filename('afile'))
self.assertFalse(tree.has_filename('adir'))
tree.unlock()
def test_put_new_file(self):
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_write()
tree.add(['', 'foo'], ids=['root-id', 'foo-id'],
kinds=['directory', 'file'])
tree.put_file_bytes_non_atomic('foo-id', 'barshoom')
self.assertEqual('barshoom', tree.get_file('foo-id').read())
tree.unlock()
def test_put_existing_file(self):
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_write()
tree.add(['', 'foo'], ids=['root-id', 'foo-id'],
kinds=['directory', 'file'])
tree.put_file_bytes_non_atomic('foo-id', 'first-content')
tree.put_file_bytes_non_atomic('foo-id', 'barshoom')
self.assertEqual('barshoom', tree.get_file('foo-id').read())
tree.unlock()
def test_add_in_subdir(self):
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_write()
self.addCleanup(tree.unlock)
tree.add([''], ['root-id'], ['directory'])
# Unfortunately, the only way to 'mkdir' is to call 'tree.mkdir', but
# that *always* adds the directory as well. So if you want to create a
# file in a subdirectory, you have to split out the 'mkdir()' calls
# from the add and put_file_bytes_non_atomic calls. :(
tree.mkdir('adir', 'dir-id')
tree.add(['adir/afile'], ['file-id'], ['file'])
self.assertEqual('adir/afile', tree.id2path('file-id'))
self.assertEqual('adir', tree.id2path('dir-id'))
tree.put_file_bytes_non_atomic('file-id', 'barshoom')
def test_commit_trivial(self):
"""Smoke test for commit on a MemoryTree.
Becamse of commits design and layering, if this works, all commit
logic should work quite reliably.
"""
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_write()
tree.add(['', 'foo'], ids=['root-id', 'foo-id'],
kinds=['directory', 'file'])
tree.put_file_bytes_non_atomic('foo-id', 'barshoom')
revision_id = tree.commit('message baby')
# the parents list for the tree should have changed.
self.assertEqual([revision_id], tree.get_parent_ids())
tree.unlock()
# and we should have a revision that is accessible outside the tree lock
revtree = tree.branch.repository.revision_tree(revision_id)
revtree.lock_read()
self.addCleanup(revtree.unlock)
self.assertEqual('barshoom', revtree.get_file('foo-id').read())
def test_unversion(self):
"""Some test for unversion of a memory tree."""
branch = self.make_branch('branch')
tree = MemoryTree.create_on_branch(branch)
tree.lock_write()
tree.add(['', 'foo'], ids=['root-id', 'foo-id'],
kinds=['directory', 'file'])
tree.unversion(['foo-id'])
self.assertFalse(tree.has_id('foo-id'))
tree.unlock()
def test_last_revision(self):
"""There should be a last revision method we can call."""
tree = self.make_branch_and_memory_tree('branch')
tree.lock_write()
tree.add('')
rev_id = tree.commit('first post')
tree.unlock()
self.assertEqual(rev_id, tree.last_revision())
def test_rename_file(self):
tree = self.make_branch_and_memory_tree('branch')
tree.lock_write()
self.addCleanup(tree.unlock)
tree.add(['', 'foo'], ['root-id', 'foo-id'], ['directory', 'file'])
tree.put_file_bytes_non_atomic('foo-id', 'content\n')
tree.commit('one', rev_id='rev-one')
tree.rename_one('foo', 'bar')
self.assertEqual('bar', tree.id2path('foo-id'))
self.assertEqual('content\n', tree._file_transport.get_bytes('bar'))
self.assertRaises(errors.NoSuchFile,
tree._file_transport.get_bytes, 'foo')
tree.commit('two', rev_id='rev-two')
self.assertEqual('content\n', tree._file_transport.get_bytes('bar'))
self.assertRaises(errors.NoSuchFile,
tree._file_transport.get_bytes, 'foo')
rev_tree2 = tree.branch.repository.revision_tree('rev-two')
self.assertEqual('bar', rev_tree2.id2path('foo-id'))
self.assertEqual('content\n', rev_tree2.get_file_text('foo-id'))
def test_rename_file_to_subdir(self):
tree = self.make_branch_and_memory_tree('branch')
tree.lock_write()
self.addCleanup(tree.unlock)
tree.add('')
tree.mkdir('subdir', 'subdir-id')
tree.add('foo', 'foo-id', 'file')
tree.put_file_bytes_non_atomic('foo-id', 'content\n')
tree.commit('one', rev_id='rev-one')
tree.rename_one('foo', 'subdir/bar')
self.assertEqual('subdir/bar', tree.id2path('foo-id'))
self.assertEqual('content\n',
tree._file_transport.get_bytes('subdir/bar'))
tree.commit('two', rev_id='rev-two')
rev_tree2 = tree.branch.repository.revision_tree('rev-two')
self.assertEqual('subdir/bar', rev_tree2.id2path('foo-id'))
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