sapling/eden/integration/hg/non_eden_operation_test.py

#!/usr/bin/env python3
#
# Copyright (c) Facebook, Inc. and its affiliates.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2.

import os

from eden.integration.hg.lib.hg_extension_test_base import EdenHgTestCase, hg_test
from eden.integration.lib import hgrepo


@hg_test
class NonEdenOperationTest(EdenHgTestCase):
    def populate_backing_repo(self, repo: hgrepo.HgRepository) -> None:
        repo.write_file("hello.txt", "hola")

    def test_hg_clone_non_eden_repo_within_eden_repo(self):
        """Regression test to ensure that running `hg` commands from an
        Eden-backed Hg repo on a non-Eden-backed Hg repo work as expected."""
        non_eden_hg_repo = os.path.join(self.tmp_dir, "non-eden-hg-repo")
        os.mkdir(non_eden_hg_repo)

        # Create the non-Eden Hg repo.
        self.hg("init", cwd=non_eden_hg_repo)
        first_file = os.path.join(non_eden_hg_repo, "first.txt")
        with open(first_file, "w") as f:
            f.write("First file in non-Eden-backed Hg repo.\n")
        self.hg(
            "commit",
            "--config",
            "ui.username=Kevin Flynn <lightcyclist@example.com>",
            "-Am",
            "first commit",
            cwd=non_eden_hg_repo,
        )

        # Run `hg clone` from the Eden repo.
        clone_of_non_eden_hg_repo = os.path.join(self.tmp_dir, "clone-target")
        self.hg(
            "clone", non_eden_hg_repo, clone_of_non_eden_hg_repo, cwd=self.repo.path
        )

        dest_first_file = os.path.join(clone_of_non_eden_hg_repo, "first.txt")
        with open(dest_first_file, "r") as f:
            contents = f.read()
        self.assertEqual("First file in non-Eden-backed Hg repo.\n", contents)