old_contents: """The tests for the simulated sensor."""
  import unittest
  
  from homeassistant.components.simulated.sensor import (
      CONF_AMP,
      CONF_FWHM,
      CONF_MEAN,
      CONF_PERIOD,
      CONF_PHASE,
      CONF_RELATIVE_TO_EPOCH,
      CONF_SEED,
      CONF_UNIT,
      DEFAULT_AMP,
      DEFAULT_FWHM,
      DEFAULT_MEAN,
      DEFAULT_NAME,
      DEFAULT_PHASE,
      DEFAULT_RELATIVE_TO_EPOCH,
      DEFAULT_SEED,
  )
  from homeassistant.const import CONF_FRIENDLY_NAME
  from homeassistant.setup import setup_component
  
  from tests.common import get_test_home_assistant
  
  
  class TestSimulatedSensor(unittest.TestCase):
      """Test the simulated sensor."""
  
      def setup_method(self, method):
          """Set up things to be run when tests are started."""
          self.hass = get_test_home_assistant()
  
      def teardown_method(self, method):
          """Stop everything that was started."""
          self.hass.stop()
  
      def test_default_config(self):
          """Test default config."""
          config = {"sensor": {"platform": "simulated"}}
          assert setup_component(self.hass, "sensor", config)
          self.hass.block_till_done()
  
          assert len(self.hass.states.entity_ids()) == 1
          state = self.hass.states.get("sensor.simulated")
  
          assert state.attributes.get(CONF_FRIENDLY_NAME) == DEFAULT_NAME
          assert state.attributes.get(CONF_AMP) == DEFAULT_AMP
          assert state.attributes.get(CONF_UNIT) is None
          assert state.attributes.get(CONF_MEAN) == DEFAULT_MEAN
          assert state.attributes.get(CONF_PERIOD) == 60.0
          assert state.attributes.get(CONF_PHASE) == DEFAULT_PHASE
          assert state.attributes.get(CONF_FWHM) == DEFAULT_FWHM
          assert state.attributes.get(CONF_SEED) == DEFAULT_SEED
          assert state.attributes.get(CONF_RELATIVE_TO_EPOCH) == DEFAULT_RELATIVE_TO_EPOCH
  
new_contents: """The tests for the simulated sensor."""
  from homeassistant.components.simulated.sensor import (
      CONF_AMP,
      CONF_FWHM,
      CONF_MEAN,
      CONF_PERIOD,
      CONF_PHASE,
      CONF_RELATIVE_TO_EPOCH,
      CONF_SEED,
      CONF_UNIT,
      DEFAULT_AMP,
      DEFAULT_FWHM,
      DEFAULT_MEAN,
      DEFAULT_NAME,
      DEFAULT_PHASE,
      DEFAULT_RELATIVE_TO_EPOCH,
      DEFAULT_SEED,
  )
  from homeassistant.const import CONF_FRIENDLY_NAME
  from homeassistant.setup import async_setup_component
  
  
  async def test_simulated_sensor_default_config(hass):
      """Test default config."""
      config = {"sensor": {"platform": "simulated"}}
      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.simulated")
  
      assert state.attributes.get(CONF_FRIENDLY_NAME) == DEFAULT_NAME
      assert state.attributes.get(CONF_AMP) == DEFAULT_AMP
      assert state.attributes.get(CONF_UNIT) is None
      assert state.attributes.get(CONF_MEAN) == DEFAULT_MEAN
      assert state.attributes.get(CONF_PERIOD) == 60.0
      assert state.attributes.get(CONF_PHASE) == DEFAULT_PHASE
      assert state.attributes.get(CONF_FWHM) == DEFAULT_FWHM
      assert state.attributes.get(CONF_SEED) == DEFAULT_SEED
      assert state.attributes.get(CONF_RELATIVE_TO_EPOCH) == DEFAULT_RELATIVE_TO_EPOCH
  
subject: Rewrite simulated unittest tests to pytest style test functions (#41115)