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"""Test the cola.git module"""
import os
import pathlib
from cola import git
from cola.git import STDOUT
from .helper import patch
# 16k+1 bytes to exhaust any output buffers.
BUFFER_SIZE = (16 * 1024) + 1
@patch('cola.git.is_git_dir')
def test_find_git_dir_None(is_git_dir):
paths = git.find_git_directory(None)
assert not is_git_dir.called
assert paths.git_dir is None
assert paths.git_file is None
assert paths.worktree is None
@patch('cola.git.is_git_dir')
def test_find_git_dir_empty_string(is_git_dir):
paths = git.find_git_directory('')
assert not is_git_dir.called
assert paths.git_dir is None
assert paths.git_file is None
assert paths.worktree is None
@patch('cola.git.is_git_dir')
def test_find_git_dir_never_found(is_git_dir):
is_git_dir.return_value = False
paths = git.find_git_directory(str(pathlib.Path('/does/not/exist').resolve()))
assert is_git_dir.called
assert paths.git_dir is None
assert paths.git_file is None
assert paths.worktree is None
expect = 8
actual = is_git_dir.call_count
assert expect == actual
is_git_dir.assert_has_calls([
((str(pathlib.Path('/does/not/exist').resolve()),), {}),
((str(pathlib.Path('/does/not/exist/.git').resolve()),), {}),
((str(pathlib.Path('/does/not').resolve()),), {}),
((str(pathlib.Path('/does/not/.git').resolve()),), {}),
((str(pathlib.Path('/does').resolve()),), {}),
((str(pathlib.Path('/does/.git').resolve()),), {}),
((str(pathlib.Path('/').resolve()),), {}),
((str(pathlib.Path('/.git').resolve()),), {}),
])
@patch('cola.git.is_git_dir')
def test_find_git_dir_found_right_away(is_git_dir):
git_dir = str(pathlib.Path('/seems/to/exist/.git').resolve())
worktree = str(pathlib.Path('/seems/to/exist').resolve())
is_git_dir.return_value = True
paths = git.find_git_directory(git_dir)
assert is_git_dir.called
assert git_dir == paths.git_dir
assert paths.git_file is None
assert worktree == paths.worktree
@patch('cola.git.is_git_dir')
def test_find_git_does_discovery(is_git_dir):
git_dir = str(pathlib.Path('/the/root/.git').resolve())
worktree = str(pathlib.Path('/the/root').resolve())
is_git_dir.side_effect = lambda x: x == git_dir
paths = git.find_git_directory('/the/root/sub/dir')
assert git_dir == paths.git_dir
assert paths.git_file is None
assert worktree == paths.worktree
@patch('cola.git.read_git_file')
@patch('cola.git.is_git_file')
@patch('cola.git.is_git_dir')
def test_find_git_honors_git_files(is_git_dir, is_git_file, read_git_file):
git_file = str(pathlib.Path('/the/root/.git').resolve())
worktree = str(pathlib.Path('/the/root').resolve())
git_dir = str(pathlib.Path('/super/module/.git/modules/root').resolve())
is_git_dir.side_effect = lambda x: x == git_file
is_git_file.side_effect = lambda x: x == git_file
read_git_file.return_value = git_dir
paths = git.find_git_directory(str(pathlib.Path('/the/root/sub/dir').resolve()))
assert git_dir == paths.git_dir
assert git_file == paths.git_file
assert worktree == paths.worktree
expect = 6
actual = is_git_dir.call_count
assert expect == actual
is_git_dir.assert_has_calls([
((str(pathlib.Path('/the/root/sub/dir').resolve()),), {}),
((str(pathlib.Path('/the/root/sub/dir/.git').resolve()),), {}),
((str(pathlib.Path('/the/root/sub').resolve()),), {}),
((str(pathlib.Path('/the/root/sub/.git').resolve()),), {}),
((str(pathlib.Path('/the/root').resolve()),), {}),
((str(pathlib.Path('/the/root/.git').resolve()),), {}),
])
read_git_file.assert_called_once_with(git_file)
@patch('cola.core.getenv')
@patch('cola.git.is_git_dir')
def test_find_git_honors_ceiling_dirs(is_git_dir, getenv):
git_dir = str(pathlib.Path('/ceiling/.git').resolve())
ceiling = os.pathsep.join(
str(pathlib.Path(path).resolve())
for path in ('/tmp', '/ceiling', '/other/ceiling')
)
is_git_dir.side_effect = lambda x: x == git_dir
def mock_getenv(k, v=None):
if k == 'GIT_CEILING_DIRECTORIES':
return ceiling
return v
getenv.side_effect = mock_getenv
paths = git.find_git_directory(str(pathlib.Path('/ceiling/sub/dir').resolve()))
assert paths.git_dir is None
assert paths.git_file is None
assert paths.worktree is None
assert is_git_dir.call_count == 4
is_git_dir.assert_has_calls([
((str(pathlib.Path('/ceiling/sub/dir').resolve()),), {}),
((str(pathlib.Path('/ceiling/sub/dir/.git').resolve()),), {}),
((str(pathlib.Path('/ceiling/sub').resolve()),), {}),
((str(pathlib.Path('/ceiling/sub/.git').resolve()),), {}),
])
@patch('cola.core.islink')
@patch('cola.core.isdir')
@patch('cola.core.isfile')
def test_is_git_dir_finds_linked_repository(isfile, isdir, islink):
dirs = {
str(pathlib.Path(directory).resolve())
for directory in [
'/foo',
'/foo/.git',
'/foo/.git/refs',
'/foo/.git/objects',
'/foo/.git/worktrees',
'/foo/.git/worktrees/foo',
]
}
files = {
str(pathlib.Path(file).resolve())
for file in [
'/foo/.git/HEAD',
'/foo/.git/worktrees/foo/HEAD',
'/foo/.git/worktrees/foo/index',
'/foo/.git/worktrees/foo/commondir',
'/foo/.git/worktrees/foo/gitdir',
]
}
islink.return_value = False
isfile.side_effect = lambda x: x in files
isdir.side_effect = lambda x: x in dirs
assert git.is_git_dir(str(pathlib.Path('/foo/.git/worktrees/foo').resolve()))
assert git.is_git_dir(str(pathlib.Path('/foo/.git').resolve()))
@patch('cola.core.getenv')
@patch('cola.git.is_git_dir')
def test_find_git_worktree_from_GIT_DIR(is_git_dir, getenv):
git_dir = str(pathlib.Path('/repo/.git').resolve())
worktree = str(pathlib.Path('/repo').resolve())
is_git_dir.return_value = True
getenv.side_effect = lambda x: x == 'GIT_DIR' and git_dir or None
paths = git.find_git_directory(git_dir)
assert is_git_dir.called
assert git_dir == paths.git_dir
assert paths.git_file is None
assert worktree == paths.worktree
@patch('cola.git.is_git_dir')
def test_finds_no_worktree_from_bare_repo(is_git_dir):
git_dir = str(pathlib.Path('/repos/bare.git').resolve())
worktree = None
is_git_dir.return_value = True
paths = git.find_git_directory(git_dir)
assert is_git_dir.called
assert git_dir == paths.git_dir
assert paths.git_file is None
assert worktree == paths.worktree
@patch('cola.core.getenv')
@patch('cola.git.is_git_dir')
def test_find_git_directory_uses_GIT_WORK_TREE(is_git_dir, getenv):
git_dir = str(pathlib.Path('/repo/worktree/.git').resolve())
worktree = str(pathlib.Path('/repo/worktree').resolve())
def is_git_dir_func(path):
return path == git_dir
is_git_dir.side_effect = is_git_dir_func
def getenv_func(name):
if name == 'GIT_WORK_TREE':
return worktree
return None
getenv.side_effect = getenv_func
paths = git.find_git_directory(worktree)
assert is_git_dir.called
assert git_dir == paths.git_dir
assert paths.git_file is None
assert worktree == paths.worktree
@patch('cola.core.getenv')
@patch('cola.git.is_git_dir')
def test_uses_cwd_for_worktree_with_GIT_DIR(is_git_dir, getenv):
git_dir = str(pathlib.Path('/repo/.yadm/repo.git').resolve())
worktree = str(pathlib.Path('/repo').resolve())
def getenv_func(name):
if name == 'GIT_DIR':
return git_dir
return None
getenv.side_effect = getenv_func
def is_git_dir_func(path):
return path == git_dir
is_git_dir.side_effect = is_git_dir_func
paths = git.find_git_directory(worktree)
assert is_git_dir.called
assert getenv.called
assert git_dir == paths.git_dir
assert paths.git_file is None
assert worktree == paths.worktree
def test_transform_kwargs_empty():
expect = []
actual = git.transform_kwargs(foo=None, bar=False)
assert expect == actual
def test_transform_kwargs_single_dash_from_True():
"""Single dash for one-character True"""
expect = ['-a']
actual = git.transform_kwargs(a=True)
assert expect == actual
def test_transform_kwargs_no_single_dash_from_False():
"""No single-dash for False"""
expect = []
actual = git.transform_kwargs(a=False)
assert expect == actual
def test_transform_kwargs_double_dash_from_True():
"""Double-dash for longer True"""
expect = ['--abc']
actual = git.transform_kwargs(abc=True)
assert expect == actual
def test_transform_kwargs_no_double_dash_from_True():
"""No double-dash for False"""
expect = []
actual = git.transform_kwargs(abc=False)
assert expect == actual
def test_transform_kwargs_single_dash_int():
expect = ['-a1']
actual = git.transform_kwargs(a=1)
assert expect == actual
def test_transform_kwargs_double_dash_int():
expect = ['--abc=1']
actual = git.transform_kwargs(abc=1)
assert expect == actual
def test_transform_kwargs_single_dash_float():
expect = ['-a1.5']
actual = git.transform_kwargs(a=1.5)
assert expect == actual
def test_transform_kwargs_double_dash_float():
expect = ['--abc=1.5']
actual = git.transform_kwargs(abc=1.5)
assert expect == actual
def test_transform_kwargs_single_dash_string():
expect = ['-abc']
actual = git.transform_kwargs(a='bc')
assert expect == actual
def test_transform_double_single_dash_string():
expect = ['--abc=def']
actual = git.transform_kwargs(abc='def')
assert expect == actual
def test_version():
"""Test running 'git version'"""
gitcmd = git.Git()
version = gitcmd.version()[STDOUT]
assert version.startswith('git version')
def test_stdout():
"""Test overflowing the stdout buffer"""
# Write to stdout only
code = r'import sys; value = "\0" * %d; sys.stdout.write(value);' % BUFFER_SIZE
status, out, err = git.Git.execute(['python', '-c', code], _raw=True)
assert status == 0
expect = BUFFER_SIZE
actual = len(out)
assert expect == actual
expect = 0
actual = len(err)
assert expect == actual
def test_stderr():
"""Test that stderr is seen"""
# Write to stderr and capture it
code = (
r'import sys;' r'value = "\0" * %d;' r'sys.stderr.write(value);'
) % BUFFER_SIZE
status, out, err = git.Git.execute(['python', '-c', code], _raw=True)
expect = 0
actual = status
assert expect == actual
expect = 0
actual = len(out)
assert expect == actual
expect = BUFFER_SIZE
actual = len(err)
assert expect == actual
def test_stdout_and_stderr():
"""Test ignoring stderr when stdout+stderr are provided (v2)"""
# Write to stdout and stderr but only capture stdout
code = (
r'import sys;'
r'value = "\0" * %d;'
r'sys.stdout.write(value);'
r'sys.stderr.write(value);'
) % BUFFER_SIZE
status, out, err = git.Git.execute(['python', '-c', code], _raw=True)
expect = 0
actual = status
assert expect == actual
expect = BUFFER_SIZE
actual = len(out)
assert expect == actual
actual = len(err)
assert expect == actual
def test_it_doesnt_deadlock():
"""Test that we don't deadlock with both stderr and stdout"""
code = (
r'import sys;'
r'value = "\0" * %d;'
r'sys.stderr.write(value);'
r'sys.stdout.write(value);'
) % BUFFER_SIZE
status, out, err = git.Git.execute(['python', '-c', code], _raw=True)
expect = 0
actual = status
assert expect == actual
expect = '\0' * BUFFER_SIZE
actual = out
assert expect == actual
actual = err
assert expect == actual
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