How to use the mirakuru.AlreadyRunning function in mirakuru

def test_fail_if_other_executor_running():
    """Test raising AlreadyRunning exception."""
    executor = TCPExecutor(HTTP_SERVER, host='localhost', port=PORT)
    executor2 = TCPExecutor(HTTP_SERVER, host='localhost', port=PORT)

    with executor:

        assert executor.running() is True

        with pytest.raises(AlreadyRunning):
            executor2.start()

        with pytest.raises(AlreadyRunning):
            with executor2:
                pass

def test_fail_if_other_executor_running():
    """Test raising AlreadyRunning exception."""
    executor = TCPExecutor(HTTP_SERVER, host='localhost', port=PORT)
    executor2 = TCPExecutor(HTTP_SERVER, host='localhost', port=PORT)

    with executor:

        assert executor.running() is True

        with pytest.raises(AlreadyRunning):
            executor2.start()

        with pytest.raises(AlreadyRunning):
            with executor2:
                pass

def test_fail_if_other_running():
    """Test raising AlreadyRunning exception when port is blocked."""
    executor = HTTPExecutor(
        HTTP_NORMAL_CMD, 'http://{0}:{1}/'.format(HOST, PORT),
    )
    executor2 = HTTPExecutor(
        HTTP_NORMAL_CMD, 'http://{0}:{1}/'.format(HOST, PORT),
    )

    with executor:

        assert executor.running() is True

        with pytest.raises(AlreadyRunning):
            executor2.start()

        with pytest.raises(AlreadyRunning) as exc:
            with executor2:
                pass
        assert 'seems to be already running' in str(exc.value)

"""Test raising AlreadyRunning exception when port is blocked."""
    executor = HTTPExecutor(
        HTTP_NORMAL_CMD, 'http://{0}:{1}/'.format(HOST, PORT),
    )
    executor2 = HTTPExecutor(
        HTTP_NORMAL_CMD, 'http://{0}:{1}/'.format(HOST, PORT),
    )

    with executor:

        assert executor.running() is True

        with pytest.raises(AlreadyRunning):
            executor2.start()

        with pytest.raises(AlreadyRunning) as exc:
            with executor2:
                pass
        assert 'seems to be already running' in str(exc.value)

def test_fail_if_other_executor_running():
    """Test raising AlreadyRunning exception when port is blocked."""
    process = f'bash -c "sleep 2 && touch {FILENAME} && sleep 10"'
    executor = PidExecutor(process, FILENAME)
    executor2 = PidExecutor(process, FILENAME)

    with executor:

        assert executor.running() is True

        with pytest.raises(AlreadyRunning):
            executor2.start()

def start(self, stdout=subprocess.PIPE, stderr=subprocess.PIPE):
        """ Merged copy paste from the inheritance chain with modified stdout/err behaviour """
        if self.pre_start_check():
            # Some other executor (or process) is running with same config:
            raise AlreadyRunning(self)

        if self.process is None:
            command = self.command
            if not self._shell:
                command = self.command_parts

            env = os.environ.copy()
            env[ENV_UUID] = self._uuid
            popen_kwargs = {
                "shell": self._shell,
                "stdin": subprocess.PIPE,
                "stdout": stdout,
                "stderr": stderr,
                "universal_newlines": True,
                "env": env,
            }