text: """The tests for the filesize sensor."""
  import os
  from unittest.mock import patch
  
  import pytest
  
  from homeassistant import config as hass_config
  from homeassistant.components.filesize import DOMAIN
  from homeassistant.components.filesize.sensor import CONF_FILE_PATHS
  from homeassistant.const import SERVICE_RELOAD
  from homeassistant.setup import async_setup_component
  
  TEST_DIR = os.path.join(os.path.dirname(__file__))
  TEST_FILE = os.path.join(TEST_DIR, "mock_file_test_filesize.txt")
  
  
  def create_file(path):
      """Create a test file."""
      with open(path, "w") as test_file:
          test_file.write("test")
  
  
  @pytest.fixture(autouse=True)
  def remove_file():
      """Remove test file."""
      yield
      if os.path.isfile(TEST_FILE):
          os.remove(TEST_FILE)
  
  
  async def test_invalid_path(hass):
      """Test that an invalid path is caught."""
      config = {"sensor": {"platform": "filesize", CONF_FILE_PATHS: ["invalid_path"]}}
      assert await async_setup_component(hass, "sensor", config)
      await hass.async_block_till_done()
      assert len(hass.states.async_entity_ids()) == 0
  
  
  async def test_valid_path(hass):
      """Test for a valid path."""
      create_file(TEST_FILE)
      config = {"sensor": {"platform": "filesize", CONF_FILE_PATHS: [TEST_FILE]}}
      hass.config.allowlist_external_dirs = {TEST_DIR}
      assert await async_setup_component(hass, "sensor", config)
      await hass.async_block_till_done()
      assert len(hass.states.async_entity_ids()) == 1
      state = hass.states.get("sensor.mock_file_test_filesize_txt")
      assert state.state == "0.0"
      assert state.attributes.get("bytes") == 4
  
  
  async def test_reload(hass, tmpdir):
      """Verify we can reload filesize sensors."""
      testfile = f"{tmpdir}/file"
      await hass.async_add_executor_job(create_file, testfile)
      with patch.object(hass.config, "is_allowed_path", return_value=True):
          await async_setup_component(
              hass,
              "sensor",
              {
                  "sensor": {
                      "platform": "filesize",
                      "file_paths": [testfile],
                  }
              },
          )
          await hass.async_block_till_done()
  
      assert len(hass.states.async_all()) == 1
  
      assert hass.states.get("sensor.file")
  
      yaml_path = os.path.join(
          _get_fixtures_base_path(),
          "fixtures",
          "filesize/configuration.yaml",
      )
      with patch.object(hass_config, "YAML_CONFIG_FILE", yaml_path), patch.object(
          hass.config, "is_allowed_path", return_value=True
      ):
          await hass.services.async_call(
              DOMAIN,
              SERVICE_RELOAD,
              {},
              blocking=True,
          )
          await hass.async_block_till_done()
  
      assert hass.states.get("sensor.file") is None
  
  
  def _get_fixtures_base_path():
      return os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
  