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test_install.py
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test_install.py
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import os
import pathlib
import sys
import pytest
from git import GitCommandError
from dvc.exceptions import DvcException
from dvc_data.hashfile.hash import file_md5
from tests.func.parsing.test_errors import escape_ansi
@pytest.mark.skipif(
sys.platform == "win32", reason="Git hooks aren't supported on Windows"
)
class TestInstall:
def _hook(self, name):
return pathlib.Path(".git") / "hooks" / name
def test_create_hooks(self, scm, dvc):
dvc.install()
hooks_with_commands = [
("post-checkout", "exec dvc git-hook post-checkout"),
("pre-commit", "exec dvc git-hook pre-commit"),
("pre-push", "exec dvc git-hook pre-push"),
]
for fname, command in hooks_with_commands:
hook_path = self._hook(fname)
assert hook_path.is_file()
assert command in hook_path.read_text()
def test_install_pre_commit_tool(self, scm, dvc):
dvc.install(use_pre_commit_tool=True)
precommit_path = pathlib.Path(".") / ".pre-commit-config.yaml"
assert precommit_path.is_file()
def test_fail_if_hook_exists(self, scm, dvc):
self._hook("post-checkout").write_text("hook content")
with pytest.raises(DvcException) as exc_info:
dvc.install()
assert escape_ansi(str(exc_info.value)) == (
"Hook 'post-checkout' already exists. "
"Please refer to <https://man.dvc.org/install> for more info."
)
def test_pre_commit_hook(self, tmp_dir, scm, dvc, caplog):
tmp_dir.dvc_gen("file", "file content", commit="create foo")
tmp_dir.gen("file", "file modified")
dvc.install()
# scm.commit bypasses hooks
with pytest.raises(GitCommandError, match=r"modified:\s*file"):
scm.gitpython.repo.git.commit(m="file modified")
def test_post_checkout(self, tmp_dir, scm, dvc):
tmp_dir.dvc_gen({"file": "file content"}, commit="add")
os.unlink("file")
dvc.install()
scm.gitpython.git.checkout("-b", "new_branch")
assert os.path.isfile("file")
def test_pre_push_hook(self, tmp_dir, scm, dvc, tmp_path_factory):
temp = tmp_path_factory.mktemp("external")
git_remote = temp / "project.git"
storage_path = temp / "dvc_storage"
with dvc.config.edit() as conf:
conf["remote"]["store"] = {"url": os.fspath(storage_path)}
conf["core"]["remote"] = "store"
tmp_dir.dvc_gen("file", "file_content", "commit message")
file_checksum = file_md5("file", dvc.fs)
expected_storage_path = (
storage_path / file_checksum[:2] / file_checksum[2:]
)
scm.gitpython.repo.clone(os.fspath(git_remote))
scm.gitpython.repo.create_remote("origin", os.fspath(git_remote))
dvc.install()
assert not expected_storage_path.is_file()
scm.gitpython.repo.git.push("origin", "master")
assert expected_storage_path.is_file()
assert expected_storage_path.read_text() == "file_content"
@pytest.mark.skipif(
sys.platform == "win32", reason="Git hooks aren't supported on Windows"
)
def test_merge_driver_no_ancestor(tmp_dir, scm, dvc):
with tmp_dir.branch("one", new=True):
tmp_dir.dvc_gen({"data": {"foo": "foo"}}, commit="one: add data")
scm.checkout("two", create_new=True)
dvc.checkout() # keep things in sync
tmp_dir.dvc_gen({"data": {"bar": "bar"}}, commit="two: add data")
# installing hook only before merge, as it runs `dvc` commands which makes
# `checkouts` and `commits` above slower
dvc.install()
(tmp_dir / ".gitattributes").write_text("*.dvc merge=dvc")
scm.gitpython.repo.git.merge(
"one", m="merged", no_gpg_sign=True, no_signoff=True
)
# NOTE: dvc shouldn't checkout automatically as it might take a long time
assert (tmp_dir / "data").read_text() == {"bar": "bar"}
assert (tmp_dir / "data.dvc").read_text() == (
"outs:\n"
"- md5: 5ea40360f5b4ec688df672a4db9c17d1.dir\n"
" size: 6\n"
" nfiles: 2\n"
" path: data\n"
)
dvc.checkout("data.dvc")
assert (tmp_dir / "data").read_text() == {"foo": "foo", "bar": "bar"}
@pytest.mark.skipif(
sys.platform == "win32", reason="Git hooks aren't supported on Windows"
)
def test_merge_driver(tmp_dir, scm, dvc):
tmp_dir.dvc_gen({"data": {"master": "master"}}, commit="master: add data")
with tmp_dir.branch("one", new=True):
tmp_dir.dvc_gen({"data": {"one": "one"}}, commit="one: add data")
scm.checkout("two", create_new=True)
dvc.checkout() # keep things in sync
tmp_dir.dvc_gen({"data": {"two": "two"}}, commit="two: add data")
# installing hook only before merge, as it runs `dvc` commands on
# `checkouts` and `commits` which slows tests down
dvc.install()
(tmp_dir / ".gitattributes").write_text("*.dvc merge=dvc")
scm.gitpython.repo.git.merge(
"one", m="merged", no_gpg_sign=True, no_signoff=True
)
# NOTE: dvc shouldn't checkout automatically as it might take a long time
assert (tmp_dir / "data").read_text() == {"master": "master", "two": "two"}
assert (tmp_dir / "data.dvc").read_text() == (
"outs:\n"
"- md5: 839ef9371606817569c1ee0e5f4ed233.dir\n"
" size: 12\n"
" nfiles: 3\n"
" path: data\n"
)
dvc.checkout("data.dvc")
assert (tmp_dir / "data").read_text() == {
"master": "master",
"one": "one",
"two": "two",
}