GitPython/git/test/test_index.py at patch-1 · hashar/GitPython · GitHub

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# test_index.py

# This module is part of GitPython and is released under

# the BSD License: http://www.opensource.org/licenses/bsd-license.php

from git.test.lib import *

from git import *

import inspect

import os

import sys

import tempfile

import glob

import shutil

from stat import *

class TestIndex(TestBase):

def __init__(self, *args):

super(TestIndex, self).__init__(*args)

self._reset_progress()

def _assert_fprogress(self, entries):

assert len(entries) == len(self._fprogress_map)

for path, call_count in self._fprogress_map.iteritems():

assert call_count == 2

# END for each item in progress map

self._reset_progress()

def _fprogress(self, path, done, item):

self._fprogress_map.setdefault(path, 0)

curval = self._fprogress_map[path]

if curval == 0:

assert not done

if curval == 1:

assert done

self._fprogress_map[path] = curval + 1

def _fprogress_add(self, path, done, item):

"""Called as progress func - we keep track of the proper

call order"""

assert item is not None

self._fprogress(path, done, item)

def _reset_progress(self):

# maps paths to the count of calls

self._fprogress_map = dict()

def _assert_entries(self, entries):

for entry in entries:

assert isinstance(entry, BaseIndexEntry)

assert not os.path.isabs(entry.path)

assert not "\\" in entry.path

# END for each entry

def test_index_file_base(self):

# read from file

index = IndexFile(self.rorepo, fixture_path("index"))

assert index.entries

assert index.version > 0

# test entry

last_val = None

entry = index.entries.itervalues().next()

for attr in ("path","ctime","mtime","dev","inode","mode","uid",

"gid","size","binsha", "hexsha", "stage"):

val = getattr(entry, attr)

# END for each method

# test update

entries = index.entries

assert isinstance(index.update(), IndexFile)

assert entries is not index.entries

# test stage

index_merge = IndexFile(self.rorepo, fixture_path("index_merge"))

assert len(index_merge.entries) == 106

assert len(list(e for e in index_merge.entries.itervalues() if e.stage != 0 ))

# write the data - it must match the original

tmpfile = tempfile.mktemp()

index_merge.write(tmpfile)

fp = open(tmpfile, 'rb')

assert fp.read() == fixture("index_merge")

fp.close()

os.remove(tmpfile)

def _cmp_tree_index(self, tree, index):

# fail unless both objects contain the same paths and blobs

if isinstance(tree, str):

tree = self.rorepo.commit(tree).tree

num_blobs = 0

blist = list()

for blob in tree.traverse(predicate = lambda e,d: e.type == "blob", branch_first=False):

assert (blob.path,0) in index.entries

blist.append(blob)

# END for each blob in tree

if len(blist) != len(index.entries):

iset = set(k[0] for k in index.entries.keys())

bset = set(b.path for b in blist)

raise AssertionError( "CMP Failed: Missing entries in index: %s, missing in tree: %s" % (bset-iset, iset-bset) )

# END assertion message

@with_rw_repo('0.1.6')

def test_index_file_from_tree(self, rw_repo):

common_ancestor_sha = "5117c9c8a4d3af19a9958677e45cda9269de1541"

cur_sha = "4b43ca7ff72d5f535134241e7c797ddc9c7a3573"

other_sha = "39f85c4358b7346fee22169da9cad93901ea9eb9"

# simple index from tree

base_index = IndexFile.from_tree(rw_repo, common_ancestor_sha)

assert base_index.entries

self._cmp_tree_index(common_ancestor_sha, base_index)

# merge two trees - its like a fast-forward

two_way_index = IndexFile.from_tree(rw_repo, common_ancestor_sha, cur_sha)

assert two_way_index.entries

self._cmp_tree_index(cur_sha, two_way_index)

# merge three trees - here we have a merge conflict

three_way_index = IndexFile.from_tree(rw_repo, common_ancestor_sha, cur_sha, other_sha)

assert len(list(e for e in three_way_index.entries.values() if e.stage != 0))

# ITERATE BLOBS

merge_required = lambda t: t[0] != 0

merge_blobs = list(three_way_index.iter_blobs(merge_required))

assert merge_blobs

assert merge_blobs[0][0] in (1,2,3)

assert isinstance(merge_blobs[0][1], Blob)

# test BlobFilter

prefix = 'lib/git'

for stage, blob in base_index.iter_blobs(BlobFilter([prefix])):

assert blob.path.startswith(prefix)

# writing a tree should fail with an unmerged index

self.failUnlessRaises(UnmergedEntriesError, three_way_index.write_tree)

# removed unmerged entries

unmerged_blob_map = three_way_index.unmerged_blobs()

assert unmerged_blob_map

# pick the first blob at the first stage we find and use it as resolved version

three_way_index.resolve_blobs( l[0][1] for l in unmerged_blob_map.itervalues() )

tree = three_way_index.write_tree()

assert isinstance(tree, Tree)

num_blobs = 0

for blob in tree.traverse(predicate=lambda item,d: item.type == "blob"):

assert (blob.path,0) in three_way_index.entries

num_blobs += 1

# END for each blob

assert num_blobs == len(three_way_index.entries)

@with_rw_repo('0.1.6')

def test_index_merge_tree(self, rw_repo):

# A bit out of place, but we need a different repo for this:

assert self.rorepo != rw_repo and not (self.rorepo == rw_repo)

assert len(set((self.rorepo, self.rorepo, rw_repo, rw_repo))) == 2

# SINGLE TREE MERGE

# current index is at the (virtual) cur_commit

next_commit = "4c39f9da792792d4e73fc3a5effde66576ae128c"

parent_commit = rw_repo.head.commit.parents[0]

manifest_key = IndexFile.entry_key('MANIFEST.in', 0)

manifest_entry = rw_repo.index.entries[manifest_key]

rw_repo.index.merge_tree(next_commit)

# only one change should be recorded

assert manifest_entry.binsha != rw_repo.index.entries[manifest_key].binsha

rw_repo.index.reset(rw_repo.head)

assert rw_repo.index.entries[manifest_key].binsha == manifest_entry.binsha

# FAKE MERGE

#############

# Add a change with a NULL sha that should conflict with next_commit. We

# pretend there was a change, but we do not even bother adding a proper

# sha for it ( which makes things faster of course )

manifest_fake_entry = BaseIndexEntry((manifest_entry[0], "\0"*20, 0, manifest_entry[3]))

# try write flag

self._assert_entries(rw_repo.index.add([manifest_fake_entry], write=False))

# add actually resolves the null-hex-sha for us as a feature, but we can

# edit the index manually

assert rw_repo.index.entries[manifest_key].binsha != Object.NULL_BIN_SHA

# must operate on the same index for this ! Its a bit problematic as

# it might confuse people

index = rw_repo.index

index.entries[manifest_key] = IndexEntry.from_base(manifest_fake_entry)

index.write()

assert rw_repo.index.entries[manifest_key].hexsha == Diff.NULL_HEX_SHA

# write an unchanged index ( just for the fun of it )

rw_repo.index.write()

# a three way merge would result in a conflict and fails as the command will

# not overwrite any entries in our index and hence leave them unmerged. This is

# mainly a protection feature as the current index is not yet in a tree

self.failUnlessRaises(GitCommandError, index.merge_tree, next_commit, base=parent_commit)

# the only way to get the merged entries is to safe the current index away into a tree,

# which is like a temporary commit for us. This fails as well as the NULL sha deos not

# have a corresponding object

# NOTE: missing_ok is not a kwarg anymore, missing_ok is always true

# self.failUnlessRaises(GitCommandError, index.write_tree)

# if missing objects are okay, this would work though ( they are always okay now )

tree = index.write_tree()

# now make a proper three way merge with unmerged entries

unmerged_tree = IndexFile.from_tree(rw_repo, parent_commit, tree, next_commit)

unmerged_blobs = unmerged_tree.unmerged_blobs()

assert len(unmerged_blobs) == 1 and unmerged_blobs.keys()[0] == manifest_key[0]

@with_rw_repo('0.1.6')

def test_index_file_diffing(self, rw_repo):

# default Index instance points to our index

index = IndexFile(rw_repo)

assert index.path is not None

assert len(index.entries)

# write the file back

index.write()

# could sha it, or check stats

# test diff

# resetting the head will leave the index in a different state, and the

# diff will yield a few changes

cur_head_commit = rw_repo.head.reference.commit

ref = rw_repo.head.reset('HEAD~6', index=True, working_tree=False)

# diff against same index is 0

diff = index.diff()

assert len(diff) == 0

# against HEAD as string, must be the same as it matches index

diff = index.diff('HEAD')

assert len(diff) == 0

# against previous head, there must be a difference

diff = index.diff(cur_head_commit)

assert len(diff)

# we reverse the result

adiff = index.diff(str(cur_head_commit), R=True)

odiff = index.diff(cur_head_commit, R=False) # now its not reversed anymore

assert adiff != odiff

assert odiff == diff # both unreversed diffs against HEAD

# against working copy - its still at cur_commit

wdiff = index.diff(None)

assert wdiff != adiff

assert wdiff != odiff

# against something unusual

self.failUnlessRaises(ValueError, index.diff, int)

# adjust the index to match an old revision

cur_branch = rw_repo.active_branch

cur_commit = cur_branch.commit

rev_head_parent = 'HEAD~1'

assert index.reset(rev_head_parent) is index

assert cur_branch == rw_repo.active_branch

assert cur_commit == rw_repo.head.commit

# there must be differences towards the working tree which is in the 'future'

assert index.diff(None)

# reset the working copy as well to current head,to pull 'back' as well

new_data = "will be reverted"

file_path = os.path.join(rw_repo.working_tree_dir, "CHANGES")

fp = open(file_path, "wb")

fp.write(new_data)

fp.close()

index.reset(rev_head_parent, working_tree=True)

assert not index.diff(None)

assert cur_branch == rw_repo.active_branch

assert cur_commit == rw_repo.head.commit

fp = open(file_path,'rb')

try:

assert fp.read() != new_data

finally:

fp.close()

# test full checkout

test_file = os.path.join(rw_repo.working_tree_dir, "CHANGES")

open(test_file, 'ab').write("some data")

rval = index.checkout(None, force=True, fprogress=self._fprogress)

assert 'CHANGES' in list(rval)

self._assert_fprogress([None])

assert os.path.isfile(test_file)

os.remove(test_file)

rval = index.checkout(None, force=False, fprogress=self._fprogress)

assert 'CHANGES' in list(rval)

self._assert_fprogress([None])

assert os.path.isfile(test_file)

# individual file

os.remove(test_file)

rval = index.checkout(test_file, fprogress=self._fprogress)

assert list(rval)[0] == 'CHANGES'

self._assert_fprogress([test_file])

assert os.path.exists(test_file)

# checking out non-existing file throws

self.failUnlessRaises(CheckoutError, index.checkout, "doesnt_exist_ever.txt.that")

self.failUnlessRaises(CheckoutError, index.checkout, paths=["doesnt/exist"])

# checkout file with modifications

append_data = "hello"

fp = open(test_file, "ab")

fp.write(append_data)

fp.close()

try:

index.checkout(test_file)

except CheckoutError, e:

assert len(e.failed_files) == 1 and e.failed_files[0] == os.path.basename(test_file)

assert (len(e.failed_files) == len(e.failed_reasons)) and isinstance(e.failed_reasons[0], basestring)

assert len(e.valid_files) == 0

assert open(test_file).read().endswith(append_data)

else:

raise AssertionError("Exception CheckoutError not thrown")

# if we force it it should work

index.checkout(test_file, force=True)

assert not open(test_file).read().endswith(append_data)

# checkout directory

shutil.rmtree(os.path.join(rw_repo.working_tree_dir, "lib"))

rval = index.checkout('lib')

assert len(list(rval)) > 1

def _count_existing(self, repo, files):

"""

Returns count of files that actually exist in the repository directory.

"""

existing = 0

basedir = repo.working_tree_dir

for f in files:

existing += os.path.isfile(os.path.join(basedir, f))

# END for each deleted file

return existing

# END num existing helper

@with_rw_repo('0.1.6')

def test_index_mutation(self, rw_repo):

index = rw_repo.index

num_entries = len(index.entries)

cur_head = rw_repo.head

uname = "Some Developer"

umail = "sd@company.com"

rw_repo.config_writer().set_value("user", "name", uname)

rw_repo.config_writer().set_value("user", "email", umail)

# remove all of the files, provide a wild mix of paths, BaseIndexEntries,

# IndexEntries

def mixed_iterator():

count = 0

for entry in index.entries.itervalues():

type_id = count % 4

if type_id == 0: # path

yield entry.path

elif type_id == 1: # blob

yield Blob(rw_repo, entry.binsha, entry.mode, entry.path)

elif type_id == 2: # BaseIndexEntry

yield BaseIndexEntry(entry[:4])

elif type_id == 3: # IndexEntry

yield entry

else:

raise AssertionError("Invalid Type")

count += 1

# END for each entry

# END mixed iterator

deleted_files = index.remove(mixed_iterator(), working_tree=False)

assert deleted_files

assert self._count_existing(rw_repo, deleted_files) == len(deleted_files)

assert len(index.entries) == 0

# reset the index to undo our changes

index.reset()

assert len(index.entries) == num_entries

# remove with working copy

deleted_files = index.remove(mixed_iterator(), working_tree=True)

assert deleted_files

assert self._count_existing(rw_repo, deleted_files) == 0

# reset everything

index.reset(working_tree=True)

assert self._count_existing(rw_repo, deleted_files) == len(deleted_files)

# invalid type

self.failUnlessRaises(TypeError, index.remove, [1])

# absolute path

deleted_files = index.remove([os.path.join(rw_repo.working_tree_dir,"lib")], r=True)

assert len(deleted_files) > 1

self.failUnlessRaises(ValueError, index.remove, ["/doesnt/exists"])

# TEST COMMITTING

# commit changed index

cur_commit = cur_head.commit

commit_message = "commit default head"

new_commit = index.commit(commit_message, head=False)

assert cur_commit != new_commit

assert new_commit.author.name == uname

assert new_commit.author.email == umail

assert new_commit.committer.name == uname

assert new_commit.committer.email == umail

assert new_commit.message == commit_message

assert new_commit.parents[0] == cur_commit

assert len(new_commit.parents) == 1

assert cur_head.commit == cur_commit

# same index, no parents

commit_message = "index without parents"

commit_no_parents = index.commit(commit_message, parent_commits=list(), head=True)

assert commit_no_parents.message == commit_message

assert len(commit_no_parents.parents) == 0

assert cur_head.commit == commit_no_parents

# same index, multiple parents

commit_message = "Index with multiple parents\n commit with another line"

commit_multi_parent = index.commit(commit_message,parent_commits=(commit_no_parents, new_commit))

assert commit_multi_parent.message == commit_message

assert len(commit_multi_parent.parents) == 2

assert commit_multi_parent.parents[0] == commit_no_parents

assert commit_multi_parent.parents[1] == new_commit

assert cur_head.commit == commit_multi_parent

# re-add all files in lib

# get the lib folder back on disk, but get an index without it

index.reset(new_commit.parents[0], working_tree=True).reset(new_commit, working_tree=False)

lib_file_path = os.path.join("lib", "git", "__init__.py")

assert (lib_file_path, 0) not in index.entries

assert os.path.isfile(os.path.join(rw_repo.working_tree_dir, lib_file_path))

# directory

entries = index.add(['lib'], fprogress=self._fprogress_add)

self._assert_entries(entries)

self._assert_fprogress(entries)

assert len(entries)>1

# glob

entries = index.reset(new_commit).add([os.path.join('lib', 'git', '*.py')], fprogress=self._fprogress_add)

self._assert_entries(entries)

self._assert_fprogress(entries)

assert len(entries) == 14

# same file

entries = index.reset(new_commit).add([os.path.abspath(os.path.join('lib', 'git', 'head.py'))]*2, fprogress=self._fprogress_add)

self._assert_entries(entries)

assert entries[0].mode & 0644 == 0644

# would fail, test is too primitive to handle this case

# self._assert_fprogress(entries)

self._reset_progress()

assert len(entries) == 2

# missing path

self.failUnlessRaises(OSError, index.reset(new_commit).add, ['doesnt/exist/must/raise'])

# blob from older revision overrides current index revision

old_blob = new_commit.parents[0].tree.blobs[0]

entries = index.reset(new_commit).add([old_blob], fprogress=self._fprogress_add)

self._assert_entries(entries)

self._assert_fprogress(entries)

assert index.entries[(old_blob.path,0)].hexsha == old_blob.hexsha and len(entries) == 1

# mode 0 not allowed

null_hex_sha = Diff.NULL_HEX_SHA

null_bin_sha = "\0" * 20

self.failUnlessRaises(ValueError, index.reset(new_commit).add, [BaseIndexEntry((0, null_bin_sha,0,"doesntmatter"))])

# add new file

new_file_relapath = "my_new_file"

new_file_path = self._make_file(new_file_relapath, "hello world", rw_repo)

entries = index.reset(new_commit).add([BaseIndexEntry((010644, null_bin_sha, 0, new_file_relapath))], fprogress=self._fprogress_add)

self._assert_entries(entries)

self._assert_fprogress(entries)

assert len(entries) == 1 and entries[0].hexsha != null_hex_sha

# add symlink

if sys.platform != "win32":

basename = "my_real_symlink"

target = "/etc/that"

link_file = os.path.join(rw_repo.working_tree_dir, basename)

os.symlink(target, link_file)

entries = index.reset(new_commit).add([link_file], fprogress=self._fprogress_add)

self._assert_entries(entries)

self._assert_fprogress(entries)

assert len(entries) == 1 and S_ISLNK(entries[0].mode)

assert S_ISLNK(index.entries[index.entry_key("my_real_symlink", 0)].mode)

# we expect only the target to be written

assert index.repo.odb.stream(entries[0].binsha).read() == target

# END real symlink test

# add fake symlink and assure it checks-our as symlink

fake_symlink_relapath = "my_fake_symlink"

link_target = "/etc/that"

fake_symlink_path = self._make_file(fake_symlink_relapath, link_target, rw_repo)

fake_entry = BaseIndexEntry((0120000, null_bin_sha, 0, fake_symlink_relapath))

entries = index.reset(new_commit).add([fake_entry], fprogress=self._fprogress_add)

self._assert_entries(entries)

self._assert_fprogress(entries)

assert entries[0].hexsha != null_hex_sha

assert len(entries) == 1 and S_ISLNK(entries[0].mode)

# assure this also works with an alternate method

full_index_entry = IndexEntry.from_base(BaseIndexEntry((0120000, entries[0].binsha, 0, entries[0].path)))

entry_key = index.entry_key(full_index_entry)

index.reset(new_commit)

assert entry_key not in index.entries

index.entries[entry_key] = full_index_entry

index.write()

index.update() # force reread of entries

new_entry = index.entries[entry_key]

assert S_ISLNK(new_entry.mode)

# a tree created from this should contain the symlink

tree = index.write_tree()

assert fake_symlink_relapath in tree

index.write() # flush our changes for the checkout

# checkout the fakelink, should be a link then

assert not S_ISLNK(os.stat(fake_symlink_path)[ST_MODE])

os.remove(fake_symlink_path)

index.checkout(fake_symlink_path)

# on windows we will never get symlinks

if os.name == 'nt':

# simlinks should contain the link as text ( which is what a

# symlink actually is )

open(fake_symlink_path,'rb').read() == link_target

else:

assert S_ISLNK(os.lstat(fake_symlink_path)[ST_MODE])

# TEST RENAMING

def assert_mv_rval(rval):

for source, dest in rval:

assert not os.path.exists(source) and os.path.exists(dest)

# END for each renamed item

# END move assertion utility

self.failUnlessRaises(ValueError, index.move, ['just_one_path'])

# file onto existing file

files = ['AUTHORS', 'LICENSE']

self.failUnlessRaises(GitCommandError, index.move, files)

# again, with force

assert_mv_rval(index.move(files, f=True))

# files into directory - dry run

paths = ['LICENSE', 'VERSION', 'doc']

rval = index.move(paths, dry_run=True)

assert len(rval) == 2

assert os.path.exists(paths[0])

# again, no dry run

rval = index.move(paths)

assert_mv_rval(rval)

# dir into dir

rval = index.move(['doc', 'test'])

assert_mv_rval(rval)

# TEST PATH REWRITING

######################

count = [0]

def rewriter(entry):

rval = str(count[0])

count[0] += 1

return rval

# END rewriter

def make_paths():

# two existing ones, one new one

yield 'CHANGES'

yield 'ez_setup.py'

yield index.entries[index.entry_key('README', 0)]

yield index.entries[index.entry_key('.gitignore', 0)]

for fid in range(3):

fname = 'newfile%i' % fid

open(fname, 'wb').write("abcd")

yield Blob(rw_repo, Blob.NULL_BIN_SHA, 0100644, fname)

# END for each new file

# END path producer

paths = list(make_paths())

self._assert_entries(index.add(paths, path_rewriter=rewriter))

for filenum in range(len(paths)):

assert index.entry_key(str(filenum), 0) in index.entries

# TEST RESET ON PATHS

######################

arela = "aa"

brela = "bb"

afile = self._make_file(arela, "adata", rw_repo)

bfile = self._make_file(brela, "bdata", rw_repo)

akey = index.entry_key(arela, 0)

bkey = index.entry_key(brela, 0)

keys = (akey, bkey)

absfiles = (afile, bfile)

files = (arela, brela)

for fkey in keys:

assert not fkey in index.entries

index.add(files, write=True)

nc = index.commit("2 files committed", head=False)

for fkey in keys:

assert fkey in index.entries

# just the index

index.reset(paths=(arela, afile))

assert not akey in index.entries

assert bkey in index.entries

# now with working tree - files on disk as well as entries must be recreated

rw_repo.head.commit = nc

for absfile in absfiles:

os.remove(absfile)

index.reset(working_tree=True, paths=files)

for fkey in keys:

assert fkey in index.entries

for absfile in absfiles:

assert os.path.isfile(absfile)

@with_rw_repo('HEAD')

def test_compare_write_tree(self, rw_repo):

# write all trees and compare them

# its important to have a few submodules in there too

max_count = 25

count = 0

for commit in rw_repo.head.commit.traverse():

if count >= max_count:

break

count += 1

index = rw_repo.index.reset(commit)

orig_tree = commit.tree

assert index.write_tree() == orig_tree

# END for each commit

def test_index_new(self):

B = self.rorepo.tree("6d9b1f4f9fa8c9f030e3207e7deacc5d5f8bba4e")

H = self.rorepo.tree("25dca42bac17d511b7e2ebdd9d1d679e7626db5f")

M = self.rorepo.tree("e746f96bcc29238b79118123028ca170adc4ff0f")

for args in ((B,), (B,H), (B,H,M)):

index = IndexFile.new(self.rorepo, *args)

assert isinstance(index, IndexFile)

# END for each arg tuple

GitPython/git/test/test_index.py at patch-1 · hashar/GitPython · GitHub

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