chromium/src/third_party/blink/tools/blinkpy/web_tests/servers/server_base_unittest.py

# Copyright (C) 2012 Google Inc. All rights reserved.
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import unittest

from blinkpy.common.host_mock import MockHost
from blinkpy.web_tests.port import test
from blinkpy.web_tests.servers.server_base import ServerBase


class TestServerBase(unittest.TestCase):
    def test_corrupt_pid_file(self):
        # This tests that if the pid file is corrupt or invalid,
        # both start() and stop() deal with it correctly and delete the file.
        host = MockHost()
        test_port = test.TestPort(host)

        server = ServerBase(test_port, test_port.default_results_directory())
        server._pid_file = '/tmp/pidfile'
        server._spawn_process = lambda: 4
        server._is_server_running_on_all_ports = lambda: True

        host.filesystem.write_text_file(server._pid_file, 'foo')
        server.stop()
        self.assertIsNone(host.filesystem.files[server._pid_file])

        host.filesystem.write_text_file(server._pid_file, 'foo')
        server.start()
        self.assertEqual(server._pid, 4)

        # Note that the pid file would not be None if _spawn_process()
        # was actually a real implementation.
        self.assertIsNone(host.filesystem.files[server._pid_file])