"""The tests for local file camera component."""
import unittest
from unittest import mock

from werkzeug.test import EnvironBuilder

from homeassistant.bootstrap import setup_component
from homeassistant.components.http import request_class

from tests.common import get_test_home_assistant, assert_setup_component


class TestLocalCamera(unittest.TestCase):
    """Test the local file camera component."""

    def setUp(self):
        """Setup things to be run when tests are started."""
        self.hass = get_test_home_assistant()
        self.hass.wsgi = mock.MagicMock()
        self.hass.config.components.append('http')

    def tearDown(self):
        """Stop everything that was started."""
        self.hass.stop()

    def test_loading_file(self):
        """Test that it loads image from disk."""
        test_string = 'hello'
        self.hass.wsgi = mock.MagicMock()

        with mock.patch('os.path.isfile', mock.Mock(return_value=True)), \
                mock.patch('os.access', mock.Mock(return_value=True)):
            assert setup_component(self.hass, 'camera', {
                'camera': {
                    'name': 'config_test',
                    'platform': 'local_file',
                    'file_path': 'mock.file',
                }})

        image_view = self.hass.wsgi.mock_calls[0][1][0]

        m_open = mock.mock_open(read_data=test_string)
        with mock.patch(
                'homeassistant.components.camera.local_file.open',
                m_open, create=True
        ):
            builder = EnvironBuilder(method='GET')
            Request = request_class()  # pylint: disable=invalid-name
            request = Request(builder.get_environ())
            request.authenticated = True
            resp = image_view.get(request, 'camera.config_test')

        assert resp.status_code == 200, resp.response
        assert resp.response[0].decode('utf-8') == test_string

    def test_file_not_readable(self):
        """Test local file will not setup when file is not readable."""
        self.hass.wsgi = mock.MagicMock()

        with mock.patch('os.path.isfile', mock.Mock(return_value=True)), \
                mock.patch('os.access', return_value=False), \
                assert_setup_component(0):
            assert setup_component(self.hass, 'camera', {
                'camera': {
                    'name': 'config_test',
                    'platform': 'local_file',
                    'file_path': 'mock.file',
                }})

            assert [] == self.hass.states.all()