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from __future__ import annotations
import os.path
import sqlite3
import stat
from unittest import mock
import pytest
from pre_commit import git
from pre_commit.store import _get_default_directory
from pre_commit.store import Store
from pre_commit.util import CalledProcessError
from pre_commit.util import cmd_output
from testing.fixtures import git_dir
from testing.util import cwd
from testing.util import git_commit
from testing.util import xfailif_windows
def test_our_session_fixture_works():
"""There's a session fixture which makes `Store` invariantly raise to
prevent writing to the home directory.
"""
with pytest.raises(AssertionError):
Store()
def test_get_default_directory_defaults_to_home():
# Not we use the module level one which is not mocked
ret = _get_default_directory()
expected = os.path.realpath(os.path.expanduser('~/.cache/pre-commit'))
assert ret == expected
def test_adheres_to_xdg_specification():
with mock.patch.dict(
os.environ, {'XDG_CACHE_HOME': '/tmp/fakehome'},
):
ret = _get_default_directory()
expected = os.path.realpath('/tmp/fakehome/pre-commit')
assert ret == expected
def test_uses_environment_variable_when_present():
with mock.patch.dict(
os.environ, {'PRE_COMMIT_HOME': '/tmp/pre_commit_home'},
):
ret = _get_default_directory()
expected = os.path.realpath('/tmp/pre_commit_home')
assert ret == expected
def test_store_init(store):
# Should create the store directory
assert os.path.exists(store.directory)
# Should create a README file indicating what the directory is about
with open(os.path.join(store.directory, 'README')) as readme_file:
readme_contents = readme_file.read()
for text_line in (
'This directory is maintained by the pre-commit project.',
'Learn more: https://github.com/pre-commit/pre-commit',
):
assert text_line in readme_contents
def test_clone(store, tempdir_factory, log_info_mock):
path = git_dir(tempdir_factory)
with cwd(path):
git_commit()
rev = git.head_rev(path)
git_commit()
ret = store.clone(path, rev)
# Should have printed some stuff
assert log_info_mock.call_args_list[0][0][0].startswith(
'Initializing environment for ',
)
# Should return a directory inside of the store
assert os.path.exists(ret)
assert ret.startswith(store.directory)
# Directory should start with `repo`
_, dirname = os.path.split(ret)
assert dirname.startswith('repo')
# Should be checked out to the rev we specified
assert git.head_rev(ret) == rev
# Assert there's an entry in the sqlite db for this
assert store.select_all_repos() == [(path, rev, ret)]
def test_clone_cleans_up_on_checkout_failure(store):
with pytest.raises(Exception) as excinfo:
# This raises an exception because you can't clone something that
# doesn't exist!
store.clone('/i_dont_exist_lol', 'fake_rev')
assert '/i_dont_exist_lol' in str(excinfo.value)
repo_dirs = [
d for d in os.listdir(store.directory) if d.startswith('repo')
]
assert repo_dirs == []
def test_clone_when_repo_already_exists(store):
# Create an entry in the sqlite db that makes it look like the repo has
# been cloned.
with sqlite3.connect(store.db_path) as db:
db.execute(
'INSERT INTO repos (repo, ref, path) '
'VALUES ("fake_repo", "fake_ref", "fake_path")',
)
assert store.clone('fake_repo', 'fake_ref') == 'fake_path'
def test_clone_shallow_failure_fallback_to_complete(
store, tempdir_factory,
log_info_mock,
):
path = git_dir(tempdir_factory)
with cwd(path):
git_commit()
rev = git.head_rev(path)
git_commit()
# Force shallow clone failure
def fake_shallow_clone(self, *args, **kwargs):
raise CalledProcessError(1, (), 0, b'', None)
store._shallow_clone = fake_shallow_clone
ret = store.clone(path, rev)
# Should have printed some stuff
assert log_info_mock.call_args_list[0][0][0].startswith(
'Initializing environment for ',
)
# Should return a directory inside of the store
assert os.path.exists(ret)
assert ret.startswith(store.directory)
# Directory should start with `repo`
_, dirname = os.path.split(ret)
assert dirname.startswith('repo')
# Should be checked out to the rev we specified
assert git.head_rev(ret) == rev
# Assert there's an entry in the sqlite db for this
assert store.select_all_repos() == [(path, rev, ret)]
def test_clone_tag_not_on_mainline(store, tempdir_factory):
path = git_dir(tempdir_factory)
with cwd(path):
git_commit()
cmd_output('git', 'checkout', 'master', '-b', 'branch')
git_commit()
cmd_output('git', 'tag', 'v1')
cmd_output('git', 'checkout', 'master')
cmd_output('git', 'branch', '-D', 'branch')
# previously crashed on unreachable refs
store.clone(path, 'v1')
def test_create_when_directory_exists_but_not_db(store):
# In versions <= 0.3.5, there was no sqlite db causing a need for
# backward compatibility
os.remove(store.db_path)
store = Store(store.directory)
assert os.path.exists(store.db_path)
def test_create_when_store_already_exists(store):
# an assertion that this is idempotent and does not crash
Store(store.directory)
def test_db_repo_name(store):
assert store.db_repo_name('repo', ()) == 'repo'
assert store.db_repo_name('repo', ('b', 'a', 'c')) == 'repo:a,b,c'
def test_local_resources_reflects_reality():
on_disk = {
res[len('empty_template_'):]
for res in os.listdir('pre_commit/resources')
if res.startswith('empty_template_')
}
assert on_disk == {os.path.basename(x) for x in Store.LOCAL_RESOURCES}
def test_mark_config_as_used(store, tmpdir):
with tmpdir.as_cwd():
f = tmpdir.join('f').ensure()
store.mark_config_used('f')
assert store.select_all_configs() == [f.strpath]
def test_mark_config_as_used_idempotent(store, tmpdir):
test_mark_config_as_used(store, tmpdir)
test_mark_config_as_used(store, tmpdir)
def test_mark_config_as_used_does_not_exist(store):
store.mark_config_used('f')
assert store.select_all_configs() == []
def _simulate_pre_1_14_0(store):
with store.connect() as db:
db.executescript('DROP TABLE configs')
def test_select_all_configs_roll_forward(store):
_simulate_pre_1_14_0(store)
assert store.select_all_configs() == []
def test_mark_config_as_used_roll_forward(store, tmpdir):
_simulate_pre_1_14_0(store)
test_mark_config_as_used(store, tmpdir)
@xfailif_windows # pragma: win32 no cover
def test_mark_config_as_used_readonly(tmpdir):
cfg = tmpdir.join('f').ensure()
store_dir = tmpdir.join('store')
# make a store, then we'll convert its directory to be readonly
assert not Store(str(store_dir)).readonly # directory didn't exist
assert not Store(str(store_dir)).readonly # directory did exist
def _chmod_minus_w(p):
st = os.stat(p)
os.chmod(p, st.st_mode & ~(stat.S_IWUSR | stat.S_IWOTH | stat.S_IWGRP))
_chmod_minus_w(store_dir)
for fname in os.listdir(store_dir):
assert not os.path.isdir(fname)
_chmod_minus_w(os.path.join(store_dir, fname))
store = Store(str(store_dir))
assert store.readonly
# should be skipped due to readonly
store.mark_config_used(str(cfg))
assert store.select_all_configs() == []
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