GitPython/git/test/test_docs.py at master · githubdelegate/GitPython · GitHub

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#-*-coding:utf-8-*-

# test_git.py

# This module is part of GitPython and is released under

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

import os

from git.test.lib import TestBase

from gitdb.test.lib import with_rw_directory

class Tutorials(TestBase):

@with_rw_directory

def test_init_repo_object(self, rw_dir):

# [1-test_init_repo_object]

from git import Repo

join = os.path.join

# rorepo is a a Repo instance pointing to the git-python repository.

# For all you know, the first argument to Repo is a path to the repository

# you want to work with

repo = Repo(self.rorepo.working_tree_dir)

assert not repo.bare

# ![1-test_init_repo_object]

# [2-test_init_repo_object]

bare_repo = Repo.init(join(rw_dir, 'bare-repo'), bare=True)

assert bare_repo.bare

# ![2-test_init_repo_object]

# [3-test_init_repo_object]

repo.config_reader() # get a config reader for read-only access

cw = repo.config_writer() # get a config writer to change configuration

cw.release() # call release() to be sure changes are written and locks are released

# ![3-test_init_repo_object]

# [4-test_init_repo_object]

assert not bare_repo.is_dirty() # check the dirty state

repo.untracked_files # retrieve a list of untracked files

# ['my_untracked_file']

# ![4-test_init_repo_object]

# [5-test_init_repo_object]

cloned_repo = repo.clone(join(rw_dir, 'to/this/path'))

assert cloned_repo.__class__ is Repo # clone an existing repository

assert Repo.init(join(rw_dir, 'path/for/new/repo')).__class__ is Repo

# ![5-test_init_repo_object]

# [6-test_init_repo_object]

repo.archive(open(join(rw_dir, 'repo.tar'), 'wb'))

# ![6-test_init_repo_object]

# repository paths

# [7-test_init_repo_object]

assert os.path.isdir(cloned_repo.working_tree_dir) # directory with your work files

assert cloned_repo.git_dir.startswith(cloned_repo.working_tree_dir) # directory containing the git repository

assert bare_repo.working_tree_dir is None # bare repositories have no working tree

# ![7-test_init_repo_object]

# heads, tags and references

# heads are branches in git-speak

# [8-test_init_repo_object]

assert repo.head.ref == repo.heads.master # head is a symbolic reference pointing to master

assert repo.tags['0.3.5'] == repo.tag('refs/tags/0.3.5') # you can access tags in various ways too

assert repo.refs.master == repo.heads['master'] # .refs provides access to all refs, i.e. heads ...

assert repo.refs['origin/master'] == repo.remotes.origin.refs.master # ... remotes ...

assert repo.refs['0.3.5'] == repo.tags['0.3.5'] # ... and tags

# ![8-test_init_repo_object]

# create a new head/branch

# [9-test_init_repo_object]

new_branch = cloned_repo.create_head('feature') # create a new branch ...

assert cloned_repo.active_branch != new_branch # which wasn't checked out yet ...

assert new_branch.commit == cloned_repo.active_branch.commit # and which points to the checked-out commit

# It's easy to let a branch point to the previous commit, without affecting anything else

# Each reference provides access to the git object it points to, usually commits

assert new_branch.set_commit('HEAD~1').commit == cloned_repo.active_branch.commit.parents[0]

# ![9-test_init_repo_object]

# create a new tag reference

# [10-test_init_repo_object]

past = cloned_repo.create_tag('past', ref=new_branch,

message="This is a tag-object pointing to %s" % new_branch.name)

assert past.commit == new_branch.commit # the tag points to the specified commit

assert past.tag.message.startswith("This is") # and its object carries the message provided

now = cloned_repo.create_tag('now') # This is a tag-reference. It may not carry meta-data

assert now.tag is None

# ![10-test_init_repo_object]

# Object handling

# [11-test_init_repo_object]

assert now.commit.message != past.commit.message

# You can read objects directly through binary streams, no working tree required

assert (now.commit.tree / 'VERSION').data_stream.read().decode('ascii').startswith('1')

# You can traverse trees as well to handle all contained files of a particular commit

file_count = 0

tree_count = 0

tree = past.commit.tree

for item in tree.traverse():

file_count += item.type == 'blob'

tree_count += item.type == 'tree'

assert file_count and tree_count # we have accumulated all directories and files

assert len(tree.blobs) + len(tree.trees) == len(tree) # a tree is iterable itself to traverse its children

# ![11-test_init_repo_object]

# remotes allow handling push, pull and fetch operations

# [12-test_init_repo_object]

from git import RemoteProgress

class MyProgressPrinter(RemoteProgress):

def update(self, op_code, cur_count, max_count=None, message=''):

print(op_code, cur_count, max_count, cur_count / (max_count or 100.0), message or "NO MESSAGE")

# end

assert len(cloned_repo.remotes) == 1 # we have been cloned, so there should be one remote

assert len(bare_repo.remotes) == 0 # this one was just initialized

origin = bare_repo.create_remote('origin', url=cloned_repo.working_tree_dir)

assert origin.exists()

for fetch_info in origin.fetch(progress=MyProgressPrinter()):

print("Updated %s to %s" % (fetch_info.ref, fetch_info.commit))

# create a local branch at the latest fetched master. We specify the name statically, but you have all

# information to do it programatically as well.

bare_master = bare_repo.create_head('master', origin.refs.master)

bare_repo.head.set_reference(bare_master)

assert not bare_repo.delete_remote(origin).exists()

# push and pull behave very similarly

# ![12-test_init_repo_object]

# index

# [13-test_init_repo_object]

assert new_branch.checkout() == cloned_repo.active_branch # checking out a branch adjusts the working tree

assert new_branch.commit == past.commit # Now the past is checked out

new_file_path = os.path.join(cloned_repo.working_tree_dir, 'my-new-file')

open(new_file_path, 'wb').close() # create new file in working tree

cloned_repo.index.add([new_file_path]) # add it to the index

# Commit the changes to deviate masters history

cloned_repo.index.commit("Added a new file in the past - for later merege")

# prepare a merge

master = cloned_repo.heads.master # right-hand side is ahead of us, in the future

merge_base = cloned_repo.merge_base(new_branch, master) # allwos for a three-way merge

cloned_repo.index.merge_tree(master, base=merge_base) # write the merge result into index

cloned_repo.index.commit("Merged past and now into future ;)",

parent_commits=(new_branch.commit, master.commit))

# now new_branch is ahead of master, which probably should be checked out and reset softly.

# note that all these operations didn't touch the working tree, as we managed it ourselves.

# This definitely requires you to know what you are doing :) !

assert os.path.basename(new_file_path) in new_branch.commit.tree # new file is now in tree

master.commit = new_branch.commit # let master point to most recent commit

cloned_repo.head.reference = master # we adjusted just the reference, not the working tree or index

# ![13-test_init_repo_object]

# submodules

# [14-test_init_repo_object]

# create a new submodule and check it out on the spot, setup to track master branch of `bare_repo`

# As our GitPython repository has submodules already that point to github, make sure we don't

# interact with them

for sm in cloned_repo.submodules:

assert not sm.remove().exists() # after removal, the sm doesn't exist anymore

sm = cloned_repo.create_submodule('mysubrepo', 'path/to/subrepo', url=bare_repo.git_dir, branch='master')

# .gitmodules was written and added to the index, which is now being committed

cloned_repo.index.commit("Added submodule")

assert sm.exists() and sm.module_exists() # this submodule is defintely available

sm.remove(module=True, configuration=False) # remove the working tree

assert sm.exists() and not sm.module_exists() # the submodule itself is still available

# update all submodules, non-recursively to save time, this method is very powerful, go have a look

cloned_repo.submodule_update(recursive=False)

assert sm.module_exists() # The submodules working tree was checked out by update

# ![14-test_init_repo_object]

@with_rw_directory

def test_references_and_objects(self, rw_dir):

# [1-test_references_and_objects]

import git

repo = git.Repo.clone_from(self._small_repo_url(), os.path.join(rw_dir, 'repo'), branch='master')

heads = repo.heads

master = heads.master # lists can be accessed by name for convenience

master.commit # the commit pointed to by head called master

master.rename('new_name') # rename heads

master.rename('master')

# ![1-test_references_and_objects]

# [2-test_references_and_objects]

tags = repo.tags

tagref = tags[0]

tagref.tag # tags may have tag objects carrying additional information

tagref.commit # but they always point to commits

repo.delete_tag(tagref) # delete or

repo.create_tag("my_tag") # create tags using the repo for convenience

# ![2-test_references_and_objects]

# [3-test_references_and_objects]

head = repo.head # the head points to the active branch/ref

master = head.reference # retrieve the reference the head points to

master.commit # from here you use it as any other reference

# ![3-test_references_and_objects]

# [4-test_references_and_objects]

log = master.log()

log[0] # first (i.e. oldest) reflog entry

log[-1] # last (i.e. most recent) reflog entry

# ![4-test_references_and_objects]

# [5-test_references_and_objects]

new_branch = repo.create_head('new') # create a new one

new_branch.commit = 'HEAD~10' # set branch to another commit without changing index or working trees

repo.delete_head(new_branch) # delete an existing head - only works if it is not checked out

# ![5-test_references_and_objects]

# [6-test_references_and_objects]

new_tag = repo.create_tag('my_new_tag', message='my message')

# You cannot change the commit a tag points to. Tags need to be re-created

self.failUnlessRaises(AttributeError, setattr, new_tag, 'commit', repo.commit('HEAD~1'))

repo.delete_tag(new_tag)

# ![6-test_references_and_objects]

# [7-test_references_and_objects]

new_branch = repo.create_head('another-branch')

repo.head.reference = new_branch

# ![7-test_references_and_objects]

# [8-test_references_and_objects]

hc = repo.head.commit

hct = hc.tree

hc != hct

hc != repo.tags[0]

hc == repo.head.reference.commit

# ![8-test_references_and_objects]

# [9-test_references_and_objects]

assert hct.type == 'tree' # preset string type, being a class attribute

assert hct.size > 0 # size in bytes

assert len(hct.hexsha) == 40

assert len(hct.binsha) == 20

# ![9-test_references_and_objects]

# [10-test_references_and_objects]

assert hct.path == '' # root tree has no path

assert hct.trees[0].path != '' # the first contained item has one though

assert hct.mode == 0o40000 # trees have the mode of a linux directory

assert hct.blobs[0].mode == 0o100644 # blobs have a specific mode though comparable to a standard linux fs

# ![10-test_references_and_objects]

# [11-test_references_and_objects]

hct.blobs[0].data_stream.read() # stream object to read data from

hct.blobs[0].stream_data(open(os.path.join(rw_dir, 'blob_data'), 'wb')) # write data to given stream

# ![11-test_references_and_objects]

# [12-test_references_and_objects]

repo.commit('master')

repo.commit('v0.8.1')

repo.commit('HEAD~10')

# ![12-test_references_and_objects]

# [13-test_references_and_objects]

fifty_first_commits = list(repo.iter_commits('master', max_count=50))

assert len(fifty_first_commits) == 50

# this will return commits 21-30 from the commit list as traversed backwards master

ten_commits_past_twenty = list(repo.iter_commits('master', max_count=10, skip=20))

assert len(ten_commits_past_twenty) == 10

assert fifty_first_commits[20:30] == ten_commits_past_twenty

# ![13-test_references_and_objects]

# [14-test_references_and_objects]

headcommit = repo.head.commit

assert len(headcommit.hexsha) == 40

assert len(headcommit.parents) > 0

assert headcommit.tree.type == 'tree'

assert headcommit.author.name == 'Sebastian Thiel'

assert isinstance(headcommit.authored_date, int)

assert headcommit.committer.name == 'Sebastian Thiel'

assert isinstance(headcommit.committed_date, int)

assert headcommit.message != ''

# ![14-test_references_and_objects]

# [15-test_references_and_objects]

import time

time.asctime(time.gmtime(headcommit.committed_date))

time.strftime("%a, %d %b %Y %H:%M", time.gmtime(headcommit.committed_date))

# ![15-test_references_and_objects]

# [16-test_references_and_objects]

assert headcommit.parents[0].parents[0].parents[0] == repo.commit('master^^^')

# ![16-test_references_and_objects]

# [17-test_references_and_objects]

tree = repo.heads.master.commit.tree

assert len(tree.hexsha) == 40

# ![17-test_references_and_objects]

# [18-test_references_and_objects]

assert len(tree.trees) > 0 # trees are subdirectories

assert len(tree.blobs) > 0 # blobs are files

assert len(tree.blobs) + len(tree.trees) == len(tree)

# ![18-test_references_and_objects]

# [19-test_references_and_objects]

assert tree['smmap'] == tree / 'smmap' # access by index and by sub-path

for entry in tree: # intuitive iteration of tree members

print(entry)

blob = tree.trees[0].blobs[0] # let's get a blob in a sub-tree

assert blob.name

assert len(blob.path) < len(blob.abspath)

assert tree.trees[0].name + '/' + blob.name == blob.path # this is how the relative blob path is generated

assert tree[blob.path] == blob # you can use paths like 'dir/file' in tree[...]

# ![19-test_references_and_objects]

# [20-test_references_and_objects]

assert tree / 'smmap' == tree['smmap']

assert tree / blob.path == tree[blob.path]

# ![20-test_references_and_objects]

# [21-test_references_and_objects]

# This example shows the various types of allowed ref-specs

assert repo.tree() == repo.head.commit.tree

past = repo.commit('HEAD~5')

assert repo.tree(past) == repo.tree(past.hexsha)

assert repo.tree('v0.8.1').type == 'tree' # yes, you can provide any refspec - works everywhere

# ![21-test_references_and_objects]

# [22-test_references_and_objects]

assert len(tree) < len(list(tree.traverse()))

# ![22-test_references_and_objects]

# [23-test_references_and_objects]

index = repo.index

# The index contains all blobs in a flat list

assert len(list(index.iter_blobs())) == len([o for o in repo.head.commit.tree.traverse() if o.type == 'blob'])

# Access blob objects

for (path, stage), entry in index.entries.items():

pass

new_file_path = os.path.join(repo.working_tree_dir, 'new-file-name')

open(new_file_path, 'w').close()

index.add([new_file_path]) # add a new file to the index

index.remove(['LICENSE']) # remove an existing one

assert os.path.isfile(os.path.join(repo.working_tree_dir, 'LICENSE')) # working tree is untouched

assert index.commit("my commit message").type == 'commit' # commit changed index

repo.active_branch.commit = repo.commit('HEAD~1') # forget last commit

from git import Actor

author = Actor("An author", "author@example.com")

committer = Actor("A committer", "committer@example.com")

# commit by commit message and author and committer

index.commit("my commit message", author=author, committer=committer)

# ![23-test_references_and_objects]

# [24-test_references_and_objects]

from git import IndexFile

# loads a tree into a temporary index, which exists just in memory

IndexFile.from_tree(repo, 'HEAD~1')

# merge two trees three-way into memory

merge_index = IndexFile.from_tree(repo, 'HEAD~10', 'HEAD', repo.merge_base('HEAD~10', 'HEAD'))

# and persist it

merge_index.write(os.path.join(rw_dir, 'merged_index'))

# ![24-test_references_and_objects]

# [25-test_references_and_objects]

empty_repo = git.Repo.init(os.path.join(rw_dir, 'empty'))

origin = empty_repo.create_remote('origin', repo.remotes.origin.url)

assert origin.exists()

assert origin == empty_repo.remotes.origin == empty_repo.remotes['origin']

origin.fetch() # assure we actually have data. fetch() returns useful information

# Setup a local tracking branch of a remote branch

empty_repo.create_head('master', origin.refs.master).set_tracking_branch(origin.refs.master)

origin.rename('new_origin') # rename remotes

# push and pull behaves similarly to `git push|pull`

origin.pull()

origin.push()

# assert not empty_repo.delete_remote(origin).exists() # create and delete remotes

# ![25-test_references_and_objects]

# [26-test_references_and_objects]

assert origin.url == repo.remotes.origin.url

cw = origin.config_writer

cw.set("pushurl", "other_url")

cw.release()

# Please note that in python 2, writing origin.config_writer.set(...) is totally safe.

# In py3 __del__ calls can be delayed, thus not writing changes in time.

# ![26-test_references_and_objects]

# [27-test_references_and_objects]

hcommit = repo.head.commit

hcommit.diff() # diff tree against index

hcommit.diff('HEAD~1') # diff tree against previous tree

hcommit.diff(None) # diff tree against working tree

index = repo.index

index.diff() # diff index against itself yielding empty diff

index.diff(None) # diff index against working copy

index.diff('HEAD') # diff index against current HEAD tree

# ![27-test_references_and_objects]

# [28-test_references_and_objects]

# Traverse added Diff objects only

for diff_added in hcommit.diff('HEAD~1').iter_change_type('A'):

print(diff_added)

# ![28-test_references_and_objects]

# [29-test_references_and_objects]

# Reset our working tree 10 commits into the past

past_branch = repo.create_head('past_branch', 'HEAD~10')

repo.head.reference = past_branch

assert not repo.head.is_detached

# reset the index and working tree to match the pointed-to commit

repo.head.reset(index=True, working_tree=True)

# To detach your head, you have to point to a commit directy

repo.head.reference = repo.commit('HEAD~5')

assert repo.head.is_detached

# now our head points 15 commits into the past, whereas the working tree

# and index are 10 commits in the past

# ![29-test_references_and_objects]

# [30-test_references_and_objects]

# checkout the branch using git-checkout. It will fail as the working tree appears dirty

self.failUnlessRaises(git.GitCommandError, repo.heads.master.checkout)

repo.heads.past_branch.checkout()

# ![30-test_references_and_objects]

# [31-test_references_and_objects]

git = repo.git

git.checkout('HEAD', b="my_new_branch") # create a new branch

git.branch('another-new-one')

git.branch('-D', 'another-new-one') # pass strings for full control over argument order

git.for_each_ref() # '-' becomes '_' when calling it

# ![31-test_references_and_objects]

def test_submodules(self):

# [1-test_submodules]

repo = self.rorepo

sms = repo.submodules

assert len(sms) == 1

sm = sms[0]

assert sm.name == 'gitdb' # git-python has gitdb as single submodule ...

assert sm.children()[0].name == 'smmap' # ... which has smmap as single submodule

# The module is the repository referenced by the submodule

assert sm.module_exists() # the module is available, which doesn't have to be the case.

assert sm.module().working_tree_dir.endswith('gitdb')

# the submodule's absolute path is the module's path

assert sm.abspath == sm.module().working_tree_dir

assert len(sm.hexsha) == 40 # Its sha defines the commit to checkout

assert sm.exists() # yes, this submodule is valid and exists

# read its configuration conveniently

assert sm.config_reader().get_value('path') == sm.path

assert len(sm.children()) == 1 # query the submodule hierarchy

# ![1-test_submodules]

@with_rw_directory

def test_add_file_and_commit(self, rw_dir):

import git

repo_dir = os.path.join(rw_dir, 'my-new-repo')

file_name = os.path.join(repo_dir, 'new-file')

r = git.Repo.init(repo_dir)

# This function just creates an empty file ...

open(file_name, 'wb').close()

r.index.add([file_name])

r.index.commit("initial commit")

# ![test_add_file_and_commit]

GitPython/git/test/test_docs.py at master · githubdelegate/GitPython · GitHub

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