# Copyright 2026 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.
"""Test to ensure MODULE.bazel.lock does not contain absolute filesystem paths."""

import unittest
import re
import os

class LockfilePortabilityTest(unittest.TestCase):
    def test_no_absolute_paths(self):
        # Locate lockfile via runfiles
        runfiles_dir = os.environ.get("TEST_SRCDIR")
        workspace = os.environ.get("TEST_WORKSPACE", "examples")

        if runfiles_dir:
            lockfile_path = os.path.join(runfiles_dir, workspace, "MODULE.bazel.lock")
        else:
            # Fallback for manual running
            lockfile_path = "MODULE.bazel.lock"

        self.assertTrue(os.path.exists(lockfile_path), f"Lockfile not found at {lockfile_path}")

        with open(lockfile_path, "r") as f:
            content = f.read()

        # Patterns that indicate absolute paths:
        # 1. Linux/macOS home directories: /home/username/ or /Users/username/
        # 2. Linux/macOS temp/var directories: /var/folders/...
        # 3. General absolute paths that shouldn't be there (e.g. starting with /usr/local/google/home)
        forbidden_patterns = [
            r"/usr/local/google/home",
            r"/home/[^/]+",
            r"/Users/[^/]+",
            r"/private/var/[^/]+",
        ]

        for pattern in forbidden_patterns:
            matches = re.findall(pattern, content)
            self.assertEqual(len(matches), 0, f"Found forbidden absolute path pattern '{pattern}': {matches}")

if __name__ == "__main__":
    unittest.main()