diff --git a/tests/components/trend/test_binary_sensor.py b/tests/components/trend/test_binary_sensor.py
index 1906c002101..b525c7a8fa3 100644
--- a/tests/components/trend/test_binary_sensor.py
+++ b/tests/components/trend/test_binary_sensor.py
@@ -1,398 +1,247 @@
 """The test for the Trend sensor platform."""
 from datetime import timedelta
 import logging
+from typing import Any
 from unittest.mock import patch
 
+from freezegun.api import FrozenDateTimeFactory
 import pytest
 
 from homeassistant import config as hass_config, setup
 from homeassistant.components.trend.const import DOMAIN
-from homeassistant.const import SERVICE_RELOAD, STATE_UNKNOWN
+from homeassistant.const import SERVICE_RELOAD, STATE_OFF, STATE_ON, STATE_UNKNOWN
 from homeassistant.core import HomeAssistant, State
-import homeassistant.util.dt as dt_util
+from homeassistant.setup import async_setup_component
 
-from tests.common import (
-    assert_setup_component,
-    get_fixture_path,
-    get_test_home_assistant,
-    mock_restore_cache,
+from tests.common import assert_setup_component, get_fixture_path, mock_restore_cache
+
+
+async def _setup_component(hass: HomeAssistant, params: dict[str, Any]) -> None:
+    """Set up the trend component."""
+    assert await async_setup_component(
+        hass,
+        "binary_sensor",
+        {
+            "binary_sensor": {
+                "platform": "trend",
+                "sensors": {
+                    "test_trend_sensor": params,
+                },
+            }
+        },
+    )
+    await hass.async_block_till_done()
+
+
+@pytest.mark.parametrize(
+    ("states", "inverted", "expected_state"),
+    [
+        (["1", "2"], False, STATE_ON),
+        (["2", "1"], False, STATE_OFF),
+        (["1", "2"], True, STATE_OFF),
+        (["2", "1"], True, STATE_ON),
+    ],
+    ids=["up", "down", "up inverted", "down inverted"],
 )
+async def test_basic_trend(
+    hass: HomeAssistant,
+    states: list[str],
+    inverted: bool,
+    expected_state: str,
+):
+    """Test trend with a basic setup."""
+    await _setup_component(
+        hass,
+        {
+            "entity_id": "sensor.test_state",
+            "invert": inverted,
+        },
+    )
+
+    for state in states:
+        hass.states.async_set("sensor.test_state", state)
+        await hass.async_block_till_done()
+
+    assert (sensor_state := hass.states.get("binary_sensor.test_trend_sensor"))
+    assert sensor_state.state == expected_state
 
 
-class TestTrendBinarySensor:
-    """Test the Trend sensor."""
+@pytest.mark.parametrize(
+    ("state_series", "inverted", "expected_states"),
+    [
+        (
+            [[10, 0, 20, 30], [100], [0, 30, 1, 0]],
+            False,
+            [STATE_UNKNOWN, STATE_ON, STATE_OFF],
+        ),
+        (
+            [[10, 0, 20, 30], [100], [0, 30, 1, 0]],
+            True,
+            [STATE_UNKNOWN, STATE_OFF, STATE_ON],
+        ),
+        (
+            [[30, 20, 30, 10], [5], [30, 0, 45, 60]],
+            True,
+            [STATE_UNKNOWN, STATE_ON, STATE_OFF],
+        ),
+    ],
+    ids=["up", "up inverted", "down"],
+)
+async def test_using_trendline(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+    state_series: list[list[str]],
+    inverted: bool,
+    expected_states: list[str],
+):
+    """Test uptrend using multiple samples and trendline calculation."""
+    await _setup_component(
+        hass,
+        {
+            "entity_id": "sensor.test_state",
+            "sample_duration": 10000,
+            "min_gradient": 1,
+            "max_samples": 25,
+            "min_samples": 5,
+            "invert": inverted,
+        },
+    )
 
-    hass = None
+    for idx, states in enumerate(state_series):
+        for state in states:
+            freezer.tick(timedelta(seconds=2))
+            hass.states.async_set("sensor.test_state", state)
+            await hass.async_block_till_done()
 
-    def setup_method(self, method):
-        """Set up things to be run when tests are started."""
-        self.hass = get_test_home_assistant()
+        assert (sensor_state := hass.states.get("binary_sensor.test_trend_sensor"))
+        assert sensor_state.state == expected_states[idx]
 
-    def teardown_method(self, method):
-        """Stop everything that was started."""
-        self.hass.stop()
 
-    def test_up(self):
-        """Test up trend."""
-        assert setup.setup_component(
-            self.hass,
+@pytest.mark.parametrize(
+    ("attr_values", "expected_state"),
+    [
+        (["1", "2"], STATE_ON),
+        (["2", "1"], STATE_OFF),
+    ],
+    ids=["up", "down"],
+)
+async def test_attribute_trend(
+    hass: HomeAssistant,
+    attr_values: list[str],
+    expected_state: str,
+):
+    """Test attribute uptrend."""
+    await _setup_component(
+        hass,
+        {
+            "entity_id": "sensor.test_state",
+            "attribute": "attr",
+        },
+    )
+
+    for attr in attr_values:
+        hass.states.async_set("sensor.test_state", "State", {"attr": attr})
+        await hass.async_block_till_done()
+
+    assert (sensor_state := hass.states.get("binary_sensor.test_trend_sensor"))
+    assert sensor_state.state == expected_state
+
+
+async def test_max_samples(hass: HomeAssistant):
+    """Test that sample count is limited correctly."""
+    await _setup_component(
+        hass,
+        {
+            "entity_id": "sensor.test_state",
+            "max_samples": 3,
+            "min_gradient": -1,
+        },
+    )
+
+    for val in [0, 1, 2, 3, 2, 1]:
+        hass.states.async_set("sensor.test_state", val)
+        await hass.async_block_till_done()
+
+    assert (state := hass.states.get("binary_sensor.test_trend_sensor"))
+    assert state.state == "on"
+    assert state.attributes["sample_count"] == 3
+
+
+async def test_non_numeric(hass: HomeAssistant):
+    """Test for non-numeric sensor."""
+    await _setup_component(hass, {"entity_id": "sensor.test_state"})
+
+    hass.states.async_set("sensor.test_state", "Non")
+    await hass.async_block_till_done()
+    hass.states.async_set("sensor.test_state", "Numeric")
+    await hass.async_block_till_done()
+
+    assert (state := hass.states.get("binary_sensor.test_trend_sensor"))
+    assert state.state == STATE_UNKNOWN
+
+
+async def test_missing_attribute(hass: HomeAssistant):
+    """Test for missing attribute."""
+    await _setup_component(
+        hass,
+        {
+            "entity_id": "sensor.test_state",
+            "attribute": "missing",
+        },
+    )
+
+    hass.states.async_set("sensor.test_state", "State", {"attr": "2"})
+    await hass.async_block_till_done()
+    hass.states.async_set("sensor.test_state", "State", {"attr": "1"})
+    await hass.async_block_till_done()
+
+    assert (state := hass.states.get("binary_sensor.test_trend_sensor"))
+    assert state.state == STATE_UNKNOWN
+
+
+async def test_invalid_name_does_not_create(hass: HomeAssistant):
+    """Test for invalid name."""
+    with assert_setup_component(0):
+        assert await setup.async_setup_component(
+            hass,
             "binary_sensor",
             {
                 "binary_sensor": {
                     "platform": "trend",
                     "sensors": {
-                        "test_trend_sensor": {"entity_id": "sensor.test_state"}
+                        "test INVALID sensor": {"entity_id": "sensor.test_state"}
                     },
                 }
             },
         )
-        self.hass.block_till_done()
+    assert hass.states.async_all("binary_sensor") == []
 
-        self.hass.states.set("sensor.test_state", "1")
-        self.hass.block_till_done()
-        self.hass.states.set("sensor.test_state", "2")
-        self.hass.block_till_done()
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == "on"
 
-    def test_up_using_trendline(self):
-        """Test up trend using multiple samples and trendline calculation."""
-        assert setup.setup_component(
-            self.hass,
+async def test_invalid_sensor_does_not_create(hass: HomeAssistant):
+    """Test invalid sensor."""
+    with assert_setup_component(0):
+        assert await setup.async_setup_component(
+            hass,
             "binary_sensor",
             {
                 "binary_sensor": {
                     "platform": "trend",
                     "sensors": {
-                        "test_trend_sensor": {
-                            "entity_id": "sensor.test_state",
-                            "sample_duration": 10000,
-                            "min_gradient": 1,
-                            "max_samples": 25,
-                            "min_samples": 5,
-                        }
+                        "test_trend_sensor": {"not_entity_id": "sensor.test_state"}
                     },
                 }
             },
         )
-        self.hass.block_till_done()
+    assert hass.states.async_all("binary_sensor") == []
 
-        now = dt_util.utcnow()
 
-        # add not enough states to trigger calculation
-        for val in [10, 0, 20, 30]:
-            with patch("homeassistant.util.dt.utcnow", return_value=now):
-                self.hass.states.set("sensor.test_state", val)
-            self.hass.block_till_done()
-            now += timedelta(seconds=2)
-
-        assert (
-            self.hass.states.get("binary_sensor.test_trend_sensor").state == "unknown"
+async def test_no_sensors_does_not_create(hass: HomeAssistant):
+    """Test no sensors."""
+    with assert_setup_component(0):
+        assert await setup.async_setup_component(
+            hass, "binary_sensor", {"binary_sensor": {"platform": "trend"}}
         )
-
-        # add one more state to trigger gradient calculation
-        for val in [100]:
-            with patch("homeassistant.util.dt.utcnow", return_value=now):
-                self.hass.states.set("sensor.test_state", val)
-            self.hass.block_till_done()
-            now += timedelta(seconds=2)
-
-        assert self.hass.states.get("binary_sensor.test_trend_sensor").state == "on"
-
-        # add more states to trigger a downtrend
-        for val in [0, 30, 1, 0]:
-            with patch("homeassistant.util.dt.utcnow", return_value=now):
-                self.hass.states.set("sensor.test_state", val)
-            self.hass.block_till_done()
-            now += timedelta(seconds=2)
-
-        assert self.hass.states.get("binary_sensor.test_trend_sensor").state == "off"
-
-    def test_down_using_trendline(self):
-        """Test down trend using multiple samples and trendline calculation."""
-        assert setup.setup_component(
-            self.hass,
-            "binary_sensor",
-            {
-                "binary_sensor": {
-                    "platform": "trend",
-                    "sensors": {
-                        "test_trend_sensor": {
-                            "entity_id": "sensor.test_state",
-                            "sample_duration": 10000,
-                            "min_gradient": 1,
-                            "max_samples": 25,
-                            "invert": "Yes",
-                        }
-                    },
-                }
-            },
-        )
-        self.hass.block_till_done()
-
-        now = dt_util.utcnow()
-        for val in [30, 20, 30, 10]:
-            with patch("homeassistant.util.dt.utcnow", return_value=now):
-                self.hass.states.set("sensor.test_state", val)
-            self.hass.block_till_done()
-            now += timedelta(seconds=2)
-
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == "on"
-
-        for val in [30, 0, 45, 50]:
-            with patch("homeassistant.util.dt.utcnow", return_value=now):
-                self.hass.states.set("sensor.test_state", val)
-            self.hass.block_till_done()
-            now += timedelta(seconds=2)
-
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == "off"
-
-    def test_down(self):
-        """Test down trend."""
-        assert setup.setup_component(
-            self.hass,
-            "binary_sensor",
-            {
-                "binary_sensor": {
-                    "platform": "trend",
-                    "sensors": {
-                        "test_trend_sensor": {"entity_id": "sensor.test_state"}
-                    },
-                }
-            },
-        )
-        self.hass.block_till_done()
-
-        self.hass.states.set("sensor.test_state", "2")
-        self.hass.block_till_done()
-        self.hass.states.set("sensor.test_state", "1")
-        self.hass.block_till_done()
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == "off"
-
-    def test_invert_up(self):
-        """Test up trend with custom message."""
-        assert setup.setup_component(
-            self.hass,
-            "binary_sensor",
-            {
-                "binary_sensor": {
-                    "platform": "trend",
-                    "sensors": {
-                        "test_trend_sensor": {
-                            "entity_id": "sensor.test_state",
-                            "invert": "Yes",
-                        }
-                    },
-                }
-            },
-        )
-        self.hass.block_till_done()
-
-        self.hass.states.set("sensor.test_state", "1")
-        self.hass.block_till_done()
-        self.hass.states.set("sensor.test_state", "2")
-        self.hass.block_till_done()
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == "off"
-
-    def test_invert_down(self):
-        """Test down trend with custom message."""
-        assert setup.setup_component(
-            self.hass,
-            "binary_sensor",
-            {
-                "binary_sensor": {
-                    "platform": "trend",
-                    "sensors": {
-                        "test_trend_sensor": {
-                            "entity_id": "sensor.test_state",
-                            "invert": "Yes",
-                        }
-                    },
-                }
-            },
-        )
-        self.hass.block_till_done()
-
-        self.hass.states.set("sensor.test_state", "2")
-        self.hass.block_till_done()
-        self.hass.states.set("sensor.test_state", "1")
-        self.hass.block_till_done()
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == "on"
-
-    def test_attribute_up(self):
-        """Test attribute up trend."""
-        assert setup.setup_component(
-            self.hass,
-            "binary_sensor",
-            {
-                "binary_sensor": {
-                    "platform": "trend",
-                    "sensors": {
-                        "test_trend_sensor": {
-                            "entity_id": "sensor.test_state",
-                            "attribute": "attr",
-                        }
-                    },
-                }
-            },
-        )
-        self.hass.block_till_done()
-        self.hass.states.set("sensor.test_state", "State", {"attr": "1"})
-        self.hass.block_till_done()
-        self.hass.states.set("sensor.test_state", "State", {"attr": "2"})
-        self.hass.block_till_done()
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == "on"
-
-    def test_attribute_down(self):
-        """Test attribute down trend."""
-        assert setup.setup_component(
-            self.hass,
-            "binary_sensor",
-            {
-                "binary_sensor": {
-                    "platform": "trend",
-                    "sensors": {
-                        "test_trend_sensor": {
-                            "entity_id": "sensor.test_state",
-                            "attribute": "attr",
-                        }
-                    },
-                }
-            },
-        )
-        self.hass.block_till_done()
-
-        self.hass.states.set("sensor.test_state", "State", {"attr": "2"})
-        self.hass.block_till_done()
-        self.hass.states.set("sensor.test_state", "State", {"attr": "1"})
-        self.hass.block_till_done()
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == "off"
-
-    def test_max_samples(self):
-        """Test that sample count is limited correctly."""
-        assert setup.setup_component(
-            self.hass,
-            "binary_sensor",
-            {
-                "binary_sensor": {
-                    "platform": "trend",
-                    "sensors": {
-                        "test_trend_sensor": {
-                            "entity_id": "sensor.test_state",
-                            "max_samples": 3,
-                            "min_gradient": -1,
-                        }
-                    },
-                }
-            },
-        )
-        self.hass.block_till_done()
-
-        for val in [0, 1, 2, 3, 2, 1]:
-            self.hass.states.set("sensor.test_state", val)
-            self.hass.block_till_done()
-
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == "on"
-        assert state.attributes["sample_count"] == 3
-
-    def test_non_numeric(self):
-        """Test up trend."""
-        assert setup.setup_component(
-            self.hass,
-            "binary_sensor",
-            {
-                "binary_sensor": {
-                    "platform": "trend",
-                    "sensors": {
-                        "test_trend_sensor": {"entity_id": "sensor.test_state"}
-                    },
-                }
-            },
-        )
-        self.hass.block_till_done()
-
-        self.hass.states.set("sensor.test_state", "Non")
-        self.hass.block_till_done()
-        self.hass.states.set("sensor.test_state", "Numeric")
-        self.hass.block_till_done()
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == STATE_UNKNOWN
-
-    def test_missing_attribute(self):
-        """Test attribute down trend."""
-        assert setup.setup_component(
-            self.hass,
-            "binary_sensor",
-            {
-                "binary_sensor": {
-                    "platform": "trend",
-                    "sensors": {
-                        "test_trend_sensor": {
-                            "entity_id": "sensor.test_state",
-                            "attribute": "missing",
-                        }
-                    },
-                }
-            },
-        )
-        self.hass.block_till_done()
-
-        self.hass.states.set("sensor.test_state", "State", {"attr": "2"})
-        self.hass.block_till_done()
-        self.hass.states.set("sensor.test_state", "State", {"attr": "1"})
-        self.hass.block_till_done()
-        state = self.hass.states.get("binary_sensor.test_trend_sensor")
-        assert state.state == STATE_UNKNOWN
-
-    def test_invalid_name_does_not_create(self):
-        """Test invalid name."""
-        with assert_setup_component(0):
-            assert setup.setup_component(
-                self.hass,
-                "binary_sensor",
-                {
-                    "binary_sensor": {
-                        "platform": "template",
-                        "sensors": {
-                            "test INVALID sensor": {"entity_id": "sensor.test_state"}
-                        },
-                    }
-                },
-            )
-        assert self.hass.states.all("binary_sensor") == []
-
-    def test_invalid_sensor_does_not_create(self):
-        """Test invalid sensor."""
-        with assert_setup_component(0):
-            assert setup.setup_component(
-                self.hass,
-                "binary_sensor",
-                {
-                    "binary_sensor": {
-                        "platform": "template",
-                        "sensors": {
-                            "test_trend_sensor": {"not_entity_id": "sensor.test_state"}
-                        },
-                    }
-                },
-            )
-        assert self.hass.states.all("binary_sensor") == []
-
-    def test_no_sensors_does_not_create(self):
-        """Test no sensors."""
-        with assert_setup_component(0):
-            assert setup.setup_component(
-                self.hass, "binary_sensor", {"binary_sensor": {"platform": "trend"}}
-            )
-        assert self.hass.states.all("binary_sensor") == []
+    assert hass.states.async_all("binary_sensor") == []
 
 
 async def test_reload(hass: HomeAssistant) -> None:
@@ -436,79 +285,61 @@ async def test_reload(hass: HomeAssistant) -> None:
     [("on", "on"), ("off", "off"), ("unknown", "unknown")],
 )
 async def test_restore_state(
-    hass: HomeAssistant, saved_state: str, restored_state: str
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+    saved_state: str,
+    restored_state: str,
 ) -> None:
     """Test we restore the trend state."""
     mock_restore_cache(hass, (State("binary_sensor.test_trend_sensor", saved_state),))
 
-    assert await setup.async_setup_component(
+    await _setup_component(
         hass,
-        "binary_sensor",
         {
-            "binary_sensor": {
-                "platform": "trend",
-                "sensors": {
-                    "test_trend_sensor": {
-                        "entity_id": "sensor.test_state",
-                        "sample_duration": 10000,
-                        "min_gradient": 1,
-                        "max_samples": 25,
-                        "min_samples": 5,
-                    }
-                },
-            }
+            "entity_id": "sensor.test_state",
+            "sample_duration": 10000,
+            "min_gradient": 1,
+            "max_samples": 25,
+            "min_samples": 5,
         },
     )
-    await hass.async_block_till_done()
 
     # restored sensor should match saved one
     assert hass.states.get("binary_sensor.test_trend_sensor").state == restored_state
 
-    now = dt_util.utcnow()
-
     # add not enough samples to trigger calculation
     for val in [10, 20, 30, 40]:
-        with patch("homeassistant.util.dt.utcnow", return_value=now):
-            hass.states.async_set("sensor.test_state", val)
+        freezer.tick(timedelta(seconds=2))
+        hass.states.async_set("sensor.test_state", val)
         await hass.async_block_till_done()
-        now += timedelta(seconds=2)
 
     # state should match restored state as no calculation happened
     assert hass.states.get("binary_sensor.test_trend_sensor").state == restored_state
 
     # add more samples to trigger calculation
     for val in [50, 60, 70, 80]:
-        with patch("homeassistant.util.dt.utcnow", return_value=now):
-            hass.states.async_set("sensor.test_state", val)
+        freezer.tick(timedelta(seconds=2))
+        hass.states.async_set("sensor.test_state", val)
         await hass.async_block_till_done()
-        now += timedelta(seconds=2)
 
     # sensor should detect an upwards trend and turn on
     assert hass.states.get("binary_sensor.test_trend_sensor").state == "on"
 
 
 async def test_invalid_min_sample(
-    hass: HomeAssistant, caplog: pytest.LogCaptureFixture
+    hass: HomeAssistant,
+    caplog: pytest.LogCaptureFixture,
 ) -> None:
     """Test if error is logged when min_sample is larger than max_samples."""
     with caplog.at_level(logging.ERROR):
-        assert await setup.async_setup_component(
+        await _setup_component(
             hass,
-            "binary_sensor",
             {
-                "binary_sensor": {
-                    "platform": "trend",
-                    "sensors": {
-                        "test_trend_sensor": {
-                            "entity_id": "sensor.test_state",
-                            "max_samples": 25,
-                            "min_samples": 30,
-                        }
-                    },
-                }
+                "entity_id": "sensor.test_state",
+                "max_samples": 25,
+                "min_samples": 30,
             },
         )
-        await hass.async_block_till_done()
 
     record = caplog.records[0]
     assert record.levelname == "ERROR"