GitPython/test/test_docs.py at gix-backend · gitpython-developers/GitPython · GitHub

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# This module is part of GitPython and is released under the

# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/

import gc

import os

import os.path

from test.lib import TestBase, patch_git_config

from test.lib.helper import with_rw_directory, with_rw_repo

from test.lib.fixtures import writable_fixture

class Tutorials(TestBase):

def tearDown(self):

gc.collect()

# ACTUALLY skipped by git.util.rmtree (in local onerror function), from the last

# call to it via git.objects.submodule.base.Submodule.remove

# (at "handle separate bare repository"), line 1062.

# @skipIf(sys.platform == "win32",

# "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_repo("HEAD")

@with_rw_directory

@patch_git_config("protocol.file.allow", "always")

def test_init_repo_object(self, rw_dir, rw_repo):

# [1-test_init_repo_object]

from git import Repo

# rw_repo is an isolated 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(rw_repo.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]

active_branch = repo.active_branch

self.assertEqual(repo.head.ref, active_branch) # HEAD is a sym-ref pointing to the active branch.

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[active_branch.name], repo.heads[active_branch.name]) # .refs provides all refs...

if "TRAVIS" not in os.environ:

remote_branch = next(ref for ref in repo.remotes.origin.refs if ref.remote_head != "HEAD")

self.assertEqual(repo.refs[remote_branch.name], remote_branch) # ...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]

original_branch = cloned_repo.active_branch

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",

)

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 one of the remote's branches.

remote_branch = next(ref for ref in origin.refs if ref.remote_head != "HEAD")

bare_branch = bare_repo.create_head(remote_branch.remote_head, remote_branch)

bare_repo.head.set_reference(bare_branch)

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 from the original branch's history.

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

# Prepare a merge.

merge_base = cloned_repo.merge_base(new_branch, original_branch) # Allows for a three-way merge.

cloned_repo.index.merge_tree(original_branch, base=merge_base) # Write the merge result into index.

cloned_repo.index.commit(

"Merged past and now into future ;)",

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

)

# Now new_branch is ahead of the original branch, 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.

original_branch.commit = new_branch.commit # Let the original branch point to the most recent commit.

cloned_repo.head.reference = original_branch # 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, set up to track the

# default 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=bare_branch.name,

)

# .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 definitely 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 submodule's working tree was checked out by update.

# ![14-test_init_repo_object]

@with_rw_directory

def test_references_and_objects(self, rw_dir):

source = writable_fixture("docs.sh", self._small_repo_url())

self.addCleanup(source.close)

source_url = str(source.path() / "source")

# [1-test_references_and_objects]

import git

repo = git.Repo.clone_from(source_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

assert hc != hct

assert hc != repo.tags[0]

assert hc == repo.head.reference.commit

# ![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 a 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 _entry in index.iter_entries():

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 with a commit message, 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

# Load 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() # Ensure we actually have data. fetch() returns useful information.

# Set up 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() # Check out 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]

# Check out 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_cmd = repo.git

git_cmd.checkout("HEAD", b="my_new_branch") # Create a new branch.

git_cmd.branch("another-new-one")

git_cmd.branch("-D", "another-new-one") # Pass strings for full control over argument order.

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

# ![31-test_references_and_objects]

repo.git.clear_cache()

@with_rw_repo("c15a6e1923a14bc760851913858a3942a4193cdb")

@patch_git_config("protocol.file.allow", "always")

def test_submodules(self, repo):

# [1-test_submodules]

sms = repo.submodules

assert len(sms) == 1

sm = sms[0]

with sm.config_writer() as writer:

writer.set_value("url", self._gitdb_repo_url())

sm.update(recursive=False)

child = sm.children()[0]

with child.config_writer() as writer:

writer.set_value("url", self._small_repo_url())

child.update()

self.assertEqual(sm.name, "gitdb") # GitPython has gitdb as its one and only (direct) submodule...

self.assertEqual(sm.children()[0].name, "smmap") # ...which has smmap as its one and only 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 check out.

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]

GitPython/test/test_docs.py at gix-backend · gitpython-developers/GitPython · GitHub

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