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# Copyright 2021 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Test the zmake re-exec functionality."""
import os
import sys
import unittest.mock as mock
import pytest
import zmake.__main__ as main
@pytest.fixture(name="fake_env")
def fixture_fake_env(monkeypatch):
"""A test fixture that creates fake env variables."""
environ = {}
monkeypatch.setattr(os, "environ", environ)
return environ
@pytest.fixture(name="mock_execve")
def fixture_mock_execve():
"""A test fixture that mocks the os.execve function."""
with mock.patch("os.execve", autospec=True) as mocked_function:
yield mocked_function
@pytest.mark.usefixtures("fake_env")
def test_out_of_chroot(mock_execve):
"""When CROS_WORKON_SRCROOT is not set, we should not re-exec."""
main.maybe_reexec(["--help"])
mock_execve.assert_not_called()
def test_pythonpath_set(fake_env, mock_execve):
"""With PYTHONPATH set, we should not re-exec."""
fake_env["CROS_WORKON_SRCROOT"] = "/mnt/host/source"
fake_env["PYTHONPATH"] = "/foo/bar/baz"
main.maybe_reexec(["--help"])
mock_execve.assert_not_called()
def test_zmake_does_not_exist(fake_env, mock_execve):
"""When zmake is not at src/platform/ec/zephyr/zmake, don't re-exec."""
fake_env["CROS_WORKON_SRCROOT"] = "/this/does/not/exist"
main.maybe_reexec(["--help"])
mock_execve.assert_not_called()
def test_zmake_reexec(fake_env, mock_execve, tmp_path, fake_checkout):
"""Nothing else applies? The re-exec should happen, when in a checkout."""
fake_env["CROS_WORKON_SRCROOT"] = tmp_path
main.maybe_reexec(["--help"])
new_env = dict(fake_env)
new_env["PYTHONPATH"] = str(fake_checkout.resolve())
mock_execve.assert_called_once_with(
sys.executable,
[sys.executable, "-m", "zmake", "--help"],
new_env,
)
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