diff --git a/.coveragerc b/.coveragerc
index a5153373770..70d9fd5e0e2 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -312,7 +312,6 @@ omit =
     homeassistant/components/esphome/domain_data.py
     homeassistant/components/esphome/entry_data.py
     homeassistant/components/esphome/light.py
-    homeassistant/components/esphome/lock.py
     homeassistant/components/esphome/number.py
     homeassistant/components/esphome/switch.py
     homeassistant/components/etherscan/sensor.py
diff --git a/tests/components/esphome/test_lock.py b/tests/components/esphome/test_lock.py
new file mode 100644
index 00000000000..6e6461d34b1
--- /dev/null
+++ b/tests/components/esphome/test_lock.py
@@ -0,0 +1,132 @@
+"""Test ESPHome locks."""
+
+
+from unittest.mock import call
+
+from aioesphomeapi import APIClient, LockCommand, LockEntityState, LockInfo, LockState
+
+from homeassistant.components.lock import (
+    DOMAIN as LOCK_DOMAIN,
+    SERVICE_LOCK,
+    SERVICE_OPEN,
+    SERVICE_UNLOCK,
+    STATE_LOCKED,
+    STATE_LOCKING,
+    STATE_UNLOCKING,
+)
+from homeassistant.const import ATTR_ENTITY_ID
+from homeassistant.core import HomeAssistant
+
+
+async def test_lock_entity_no_open(
+    hass: HomeAssistant, mock_client: APIClient, mock_generic_device_entry
+) -> None:
+    """Test a generic lock entity that does not support open."""
+    entity_info = [
+        LockInfo(
+            object_id="mylock",
+            key=1,
+            name="my lock",
+            unique_id="my_lock",
+            supports_open=False,
+            requires_code=False,
+        )
+    ]
+    states = [LockEntityState(key=1, state=LockState.UNLOCKING)]
+    user_service = []
+    await mock_generic_device_entry(
+        mock_client=mock_client,
+        entity_info=entity_info,
+        user_service=user_service,
+        states=states,
+    )
+    state = hass.states.get("lock.test_my_lock")
+    assert state is not None
+    assert state.state == STATE_UNLOCKING
+
+    await hass.services.async_call(
+        LOCK_DOMAIN,
+        SERVICE_LOCK,
+        {ATTR_ENTITY_ID: "lock.test_my_lock"},
+        blocking=True,
+    )
+    mock_client.lock_command.assert_has_calls([call(1, LockCommand.LOCK)])
+    mock_client.lock_command.reset_mock()
+
+
+async def test_lock_entity_start_locked(
+    hass: HomeAssistant, mock_client: APIClient, mock_generic_device_entry
+) -> None:
+    """Test a generic lock entity that does not support open."""
+    entity_info = [
+        LockInfo(
+            object_id="mylock",
+            key=1,
+            name="my lock",
+            unique_id="my_lock",
+        )
+    ]
+    states = [LockEntityState(key=1, state=LockState.LOCKED)]
+    user_service = []
+    await mock_generic_device_entry(
+        mock_client=mock_client,
+        entity_info=entity_info,
+        user_service=user_service,
+        states=states,
+    )
+    state = hass.states.get("lock.test_my_lock")
+    assert state is not None
+    assert state.state == STATE_LOCKED
+
+
+async def test_lock_entity_supports_open(
+    hass: HomeAssistant, mock_client: APIClient, mock_generic_device_entry
+) -> None:
+    """Test a generic lock entity that supports open."""
+    entity_info = [
+        LockInfo(
+            object_id="mylock",
+            key=1,
+            name="my lock",
+            unique_id="my_lock",
+            supports_open=True,
+            requires_code=True,
+        )
+    ]
+    states = [LockEntityState(key=1, state=LockState.LOCKING)]
+    user_service = []
+    await mock_generic_device_entry(
+        mock_client=mock_client,
+        entity_info=entity_info,
+        user_service=user_service,
+        states=states,
+    )
+    state = hass.states.get("lock.test_my_lock")
+    assert state is not None
+    assert state.state == STATE_LOCKING
+
+    await hass.services.async_call(
+        LOCK_DOMAIN,
+        SERVICE_LOCK,
+        {ATTR_ENTITY_ID: "lock.test_my_lock"},
+        blocking=True,
+    )
+    mock_client.lock_command.assert_has_calls([call(1, LockCommand.LOCK)])
+    mock_client.lock_command.reset_mock()
+
+    await hass.services.async_call(
+        LOCK_DOMAIN,
+        SERVICE_UNLOCK,
+        {ATTR_ENTITY_ID: "lock.test_my_lock"},
+        blocking=True,
+    )
+    mock_client.lock_command.assert_has_calls([call(1, LockCommand.UNLOCK, None)])
+
+    mock_client.lock_command.reset_mock()
+    await hass.services.async_call(
+        LOCK_DOMAIN,
+        SERVICE_OPEN,
+        {ATTR_ENTITY_ID: "lock.test_my_lock"},
+        blocking=True,
+    )
+    mock_client.lock_command.assert_has_calls([call(1, LockCommand.OPEN)])