GitPython/test/test_docs.py at main · Unpublished/GitPython · GitHub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

import sys

import pytest

from test.lib import TestBase

from test.lib.helper import with_rw_directory

import os.path

class Tutorials(TestBase):

def tearDown(self):

import gc

gc.collect()

# @skipIf(HIDE_WINDOWS_KNOWN_ERRORS, ## ACTUALLY skipped by `git.submodule.base#L869`.

# "FIXME: helper.wrapper fails with: PermissionError: [WinError 5] Access is denied: "

# "'C:\\Users\\appveyor\\AppData\\Local\\Temp\\1\\test_work_tree_unsupportedryfa60di\\master_repo\\.git\\objects\\pack\\pack-bc9e0787aef9f69e1591ef38ea0a6f566ec66fe3.idx") # noqa E501

@with_rw_directory

def test_init_repo_object(self, rw_dir):

# [1-test_init_repo_object]

from git import Repo

# rorepo is 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(os.path.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

with repo.config_writer(): # get a config writer to change configuration

pass # 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(os.path.join(rw_dir, "to/this/path"))

assert cloned_repo.__class__ is Repo # clone an existing repository

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

# ![5-test_init_repo_object]

# [6-test_init_repo_object]

with open(os.path.join(rw_dir, "repo.tar"), "wb") as fp:

repo.archive(fp)

# ![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]

self.assertEqual(

repo.head.ref,

repo.heads.master, # head is a sym-ref pointing to master

"It's ok if TC not running from `master`.",

)

self.assertEqual(repo.tags["0.3.5"], repo.tag("refs/tags/0.3.5")) # you can access tags in various ways too

self.assertEqual(repo.refs.master, repo.heads["master"]) # .refs provides all refs, ie heads ...

if "TRAVIS" not in os.environ:

self.assertEqual(repo.refs["origin/master"], repo.remotes.origin.refs.master) # ... remotes ...

self.assertEqual(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 ...

self.assertEqual(new_branch.commit, cloned_repo.active_branch.commit) # pointing 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,

)

self.assertEqual(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("3")

# 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

self.assertEqual(len(tree.blobs) + len(tree.trees), len(tree)) # a tree is iterable on 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

self.assertEqual(len(cloned_repo.remotes), 1) # we have been cloned, so should be one remote

self.assertEqual(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 programmatically 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]

self.assertEqual(new_branch.checkout(), cloned_repo.active_branch) # checking out branch adjusts the wtree

self.assertEqual(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) # allows 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.assertRaises(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 # @NoEffect

hc != repo.tags[0] # @NoEffect

hc == repo.head.reference.commit # @NoEffect

# ![8-test_references_and_objects]

# [9-test_references_and_objects]

self.assertEqual(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]

self.assertEqual(hct.path, "") # root tree has no path

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

self.assertEqual(hct.mode, 0o40000) # trees have the mode of a linux directory

self.assertEqual(hct.blobs[0].mode, 0o100644) # blobs have specific mode, 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 len(headcommit.author.name) != 0

assert isinstance(headcommit.authored_date, int)

assert len(headcommit.committer.name) != 0

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]

self.assertEqual(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[1].blobs[0] # let's get a blob in a sub-tree

assert blob.name

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

self.assertEqual(tree.trees[1].name + "/" + blob.name, blob.path) # this is how relative blob path generated

self.assertEqual(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)

self.assertEqual(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

self.assertEqual(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) # create local branch "master" from remote "master"

empty_repo.heads.master.set_tracking_branch(origin.refs.master) # set local "master" to track remote "master

empty_repo.heads.master.checkout() # checkout local "master" to working tree

# Three above commands in one:

empty_repo.create_head("master", origin.refs.master).set_tracking_branch(origin.refs.master).checkout()

# rename remotes

origin.rename("new_origin")

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

origin.pull()

origin.push() # attempt push, ignore errors

origin.push().raise_if_error() # push and raise error if it fails

# 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

with origin.config_writer as cw:

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

# 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 directly

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.assertRaises(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]

repo.git.clear_cache()

@pytest.mark.xfail(

sys.platform == "cygwin",

reason="Cygwin GitPython can't find SHA for submodule",

raises=ValueError

)

def test_submodules(self):

# [1-test_submodules]

repo = self.rorepo

sms = repo.submodules

assert len(sms) == 1

sm = sms[0]

self.assertEqual(sm.name, "gitdb") # git-python has gitdb as single submodule ...

self.assertEqual(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

self.assertEqual(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

self.assertEqual(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]

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