diff --git a/.coveragerc b/.coveragerc
index ecd80cb79a2..b63c2cbaa1f 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -179,8 +179,6 @@ omit =
     homeassistant/components/coolmaster/climate.py
     homeassistant/components/coolmaster/const.py
     homeassistant/components/cppm_tracker/device_tracker.py
-    homeassistant/components/cpuspeed/__init__.py
-    homeassistant/components/cpuspeed/sensor.py
     homeassistant/components/crownstone/__init__.py
     homeassistant/components/crownstone/const.py
     homeassistant/components/crownstone/listeners.py
diff --git a/homeassistant/components/cpuspeed/sensor.py b/homeassistant/components/cpuspeed/sensor.py
index 376a2422901..86c02ae9ee9 100644
--- a/homeassistant/components/cpuspeed/sensor.py
+++ b/homeassistant/components/cpuspeed/sensor.py
@@ -74,12 +74,12 @@ class CPUSpeedSensor(SensorEntity):
         """Get the latest data and updates the state."""
         info = cpuinfo.get_cpu_info()
 
-        if info is not None and HZ_ACTUAL in info:
+        if info and HZ_ACTUAL in info:
             self._attr_native_value = round(float(info[HZ_ACTUAL][0]) / 10 ** 9, 2)
         else:
             self._attr_native_value = None
 
-        if info is not None:
+        if info:
             self._attr_extra_state_attributes = {
                 ATTR_ARCH: info["arch_string_raw"],
                 ATTR_BRAND: info["brand_raw"],
diff --git a/tests/components/cpuspeed/conftest.py b/tests/components/cpuspeed/conftest.py
index 97eb668b02e..a5d7d1837ba 100644
--- a/tests/components/cpuspeed/conftest.py
+++ b/tests/components/cpuspeed/conftest.py
@@ -7,6 +7,7 @@ from unittest.mock import AsyncMock, MagicMock, patch
 import pytest
 
 from homeassistant.components.cpuspeed.const import DOMAIN
+from homeassistant.core import HomeAssistant
 
 from tests.common import MockConfigEntry
 
@@ -43,3 +44,33 @@ def mock_setup_entry() -> Generator[AsyncMock, None, None]:
         "homeassistant.components.cpuspeed.async_setup_entry", return_value=True
     ) as mock_setup:
         yield mock_setup
+
+
+@pytest.fixture
+def mock_cpuinfo() -> Generator[MagicMock, None, None]:
+    """Return a mocked get_cpu_info."""
+    info = {
+        "hz_actual": (3200000001, 0),
+        "arch_string_raw": "aargh",
+        "brand_raw": "Intel Ryzen 7",
+        "hz_advertised": (3600000001, 0),
+    }
+
+    with patch(
+        "homeassistant.components.cpuspeed.cpuinfo.get_cpu_info",
+        return_value=info,
+    ) as cpuinfo_mock:
+        yield cpuinfo_mock
+
+
+@pytest.fixture
+async def init_integration(
+    hass: HomeAssistant, mock_config_entry: MockConfigEntry, mock_cpuinfo: MagicMock
+) -> MockConfigEntry:
+    """Set up the CPU Speed integration for testing."""
+    mock_config_entry.add_to_hass(hass)
+
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    return mock_config_entry
diff --git a/tests/components/cpuspeed/test_init.py b/tests/components/cpuspeed/test_init.py
new file mode 100644
index 00000000000..2352e411b8e
--- /dev/null
+++ b/tests/components/cpuspeed/test_init.py
@@ -0,0 +1,66 @@
+"""Tests for the CPU Speed integration."""
+from unittest.mock import MagicMock
+
+import pytest
+
+from homeassistant.components.cpuspeed.const import DOMAIN
+from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.core import HomeAssistant
+from homeassistant.setup import async_setup_component
+
+from tests.common import MockConfigEntry
+
+
+async def test_load_unload_config_entry(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_cpuinfo: MagicMock,
+) -> None:
+    """Test the CPU Speed configuration entry loading/unloading."""
+    mock_config_entry.add_to_hass(hass)
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    assert mock_config_entry.state is ConfigEntryState.LOADED
+    assert len(mock_cpuinfo.mock_calls) == 2
+
+    await hass.config_entries.async_unload(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    assert not hass.data.get(DOMAIN)
+    assert mock_config_entry.state is ConfigEntryState.NOT_LOADED
+
+
+async def test_config_entry_not_compatible(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_cpuinfo: MagicMock,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Test the CPU Speed configuration entry loading on an unsupported system."""
+    mock_config_entry.add_to_hass(hass)
+    mock_cpuinfo.return_value = {}
+
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    assert mock_config_entry.state is ConfigEntryState.SETUP_ERROR
+    assert len(mock_cpuinfo.mock_calls) == 1
+    assert "is not compatible with your system" in caplog.text
+
+
+async def test_import_config(
+    hass: HomeAssistant,
+    mock_cpuinfo: MagicMock,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Test the CPU Speed being set up from config via import."""
+    assert await async_setup_component(
+        hass, SENSOR_DOMAIN, {SENSOR_DOMAIN: {"platform": DOMAIN}}
+    )
+    await hass.async_block_till_done()
+
+    assert len(hass.config_entries.async_entries(DOMAIN)) == 1
+    assert len(mock_cpuinfo.mock_calls) == 3
+    assert "the CPU Speed platform in YAML is deprecated" in caplog.text
diff --git a/tests/components/cpuspeed/test_sensor.py b/tests/components/cpuspeed/test_sensor.py
new file mode 100644
index 00000000000..134d19b31ea
--- /dev/null
+++ b/tests/components/cpuspeed/test_sensor.py
@@ -0,0 +1,63 @@
+"""Tests for the sensor provided by the CPU Speed integration."""
+
+from unittest.mock import MagicMock
+
+from homeassistant.components.cpuspeed.sensor import ATTR_ARCH, ATTR_BRAND, ATTR_HZ
+from homeassistant.components.homeassistant import (
+    DOMAIN as HOME_ASSISTANT_DOMAIN,
+    SERVICE_UPDATE_ENTITY,
+)
+from homeassistant.const import (
+    ATTR_DEVICE_CLASS,
+    ATTR_ENTITY_ID,
+    ATTR_FRIENDLY_NAME,
+    ATTR_ICON,
+    STATE_UNKNOWN,
+)
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import entity_registry as er
+from homeassistant.setup import async_setup_component
+
+from tests.common import MockConfigEntry
+
+
+async def test_sensor(
+    hass: HomeAssistant,
+    mock_cpuinfo: MagicMock,
+    init_integration: MockConfigEntry,
+) -> None:
+    """Test the CPU Speed sensor."""
+    await async_setup_component(hass, "homeassistant", {})
+    entity_registry = er.async_get(hass)
+
+    entry = entity_registry.async_get("sensor.cpu_speed")
+    assert entry
+    assert entry.unique_id == entry.config_entry_id
+    assert entry.entity_category is None
+
+    state = hass.states.get("sensor.cpu_speed")
+    assert state
+    assert state.state == "3.2"
+    assert state.attributes.get(ATTR_FRIENDLY_NAME) == "CPU Speed"
+    assert state.attributes.get(ATTR_ICON) == "mdi:pulse"
+    assert ATTR_DEVICE_CLASS not in state.attributes
+
+    assert state.attributes.get(ATTR_ARCH) == "aargh"
+    assert state.attributes.get(ATTR_BRAND) == "Intel Ryzen 7"
+    assert state.attributes.get(ATTR_HZ) == 3.6
+
+    mock_cpuinfo.return_value = {}
+    await hass.services.async_call(
+        HOME_ASSISTANT_DOMAIN,
+        SERVICE_UPDATE_ENTITY,
+        {ATTR_ENTITY_ID: "sensor.cpu_speed"},
+        blocking=True,
+    )
+    await hass.async_block_till_done()
+
+    state = hass.states.get("sensor.cpu_speed")
+    assert state
+    assert state.state == STATE_UNKNOWN
+    assert state.attributes.get(ATTR_ARCH) == "aargh"
+    assert state.attributes.get(ATTR_BRAND) == "Intel Ryzen 7"
+    assert state.attributes.get(ATTR_HZ) == 3.6