mirror of
https://gerrit.googlesource.com/git-repo
synced 2026-05-08 03:49:28 +00:00
Mike Frysinger
3d819e8e3e
Change-Id: I63751042391f5cc3e06af7067bc83d67bd0716dc Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/569441 Tested-by: Mike Frysinger <vapier@google.com> Commit-Queue: Mike Frysinger <vapier@google.com> Reviewed-by: Gavin Mak <gavinmak@google.com>
105 lines
3.1 KiB
Python
105 lines
3.1 KiB
Python
# Copyright (C) 2026 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Various utility code used by tests.
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If you want to write a per-test fixture, see conftest.py instead.
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"""
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import contextlib
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import functools
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from pathlib import Path
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import subprocess
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import tempfile
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from typing import Optional, Union
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import git_command
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THIS_FILE = Path(__file__).resolve()
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THIS_DIR = THIS_FILE.parent
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FIXTURES_DIR = THIS_DIR / "fixtures"
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def init_git_tree(
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path: Union[str, Path],
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ref_format: Optional[str] = None,
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) -> None:
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"""Initialize `path` as a new git repo."""
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with contextlib.ExitStack() as stack:
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# Tests need to assume, that main is default branch at init,
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# which is not supported in config until 2.28.
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cmd = ["git"]
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if ref_format:
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cmd += ["-c", f"init.defaultRefFormat={ref_format}"]
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cmd += ["init"]
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if git_command.git_require((2, 28, 0)):
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cmd += ["--initial-branch=main"]
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else:
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# Use template dir for init.
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templatedir = stack.enter_context(
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tempfile.mkdtemp(prefix="git-template")
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)
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(Path(templatedir) / "HEAD").write_text("ref: refs/heads/main\n")
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cmd += ["--template", templatedir]
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cmd += [path]
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subprocess.run(cmd, check=True)
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@contextlib.contextmanager
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def TempGitTree():
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"""Create a new empty git checkout for testing."""
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with tempfile.TemporaryDirectory(prefix="repo-tests") as tempdir:
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init_git_tree(tempdir)
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yield tempdir
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@functools.lru_cache(maxsize=None)
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def supports_reftable() -> bool:
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"""Check if git supports reftable."""
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with tempfile.TemporaryDirectory(prefix="repo-tests") as tempdir:
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proc = subprocess.run(
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["git", "-c", "init.defaultRefFormat=reftable", "init"],
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cwd=tempdir,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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check=False,
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)
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return proc.returncode == 0
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@functools.lru_cache(maxsize=None)
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def supports_refs_migrate() -> bool:
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"""Check if git supports refs migrate."""
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with tempfile.TemporaryDirectory(prefix="repo-tests") as tempdir:
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subprocess.check_call(
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["git", "-c", "init.defaultRefFormat=files", "init"],
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cwd=tempdir,
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)
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proc = subprocess.run(
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[
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"git",
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"refs",
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"migrate",
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"--ref-format=reftable",
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"--dry-run",
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],
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cwd=tempdir,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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check=False,
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)
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return proc.returncode == 0
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