Extract lovelace to it's own component (#16816)

* Extract lovelace to it's own component

* Lint

* Update comment

* Lint

* Lint

tests/components/lovelace/test_init.py

@@ -0,0 +1,120 @@
+"""Test the Lovelace initialization."""
+from unittest.mock import patch
+
+from homeassistant.exceptions import HomeAssistantError
+from homeassistant.setup import async_setup_component
+from homeassistant.components import websocket_api as wapi
+
+
+async def test_deprecated_lovelace_ui(hass, hass_ws_client):
+    """Test lovelace_ui command."""
+    await async_setup_component(hass, 'lovelace')
+    client = await hass_ws_client(hass)
+
+    with patch('homeassistant.components.lovelace.load_yaml',
+               return_value={'hello': 'world'}):
+        await client.send_json({
+            'id': 5,
+            'type': 'frontend/lovelace_config',
+        })
+        msg = await client.receive_json()
+
+    assert msg['id'] == 5
+    assert msg['type'] == wapi.TYPE_RESULT
+    assert msg['success']
+    assert msg['result'] == {'hello': 'world'}
+
+
+async def test_deprecated_lovelace_ui_not_found(hass, hass_ws_client):
+    """Test lovelace_ui command cannot find file."""
+    await async_setup_component(hass, 'lovelace')
+    client = await hass_ws_client(hass)
+
+    with patch('homeassistant.components.lovelace.load_yaml',
+               side_effect=FileNotFoundError):
+        await client.send_json({
+            'id': 5,
+            'type': 'frontend/lovelace_config',
+        })
+        msg = await client.receive_json()
+
+    assert msg['id'] == 5
+    assert msg['type'] == wapi.TYPE_RESULT
+    assert msg['success'] is False
+    assert msg['error']['code'] == 'file_not_found'
+
+
+async def test_deprecated_lovelace_ui_load_err(hass, hass_ws_client):
+    """Test lovelace_ui command cannot find file."""
+    await async_setup_component(hass, 'lovelace')
+    client = await hass_ws_client(hass)
+
+    with patch('homeassistant.components.lovelace.load_yaml',
+               side_effect=HomeAssistantError):
+        await client.send_json({
+            'id': 5,
+            'type': 'frontend/lovelace_config',
+        })
+        msg = await client.receive_json()
+
+    assert msg['id'] == 5
+    assert msg['type'] == wapi.TYPE_RESULT
+    assert msg['success'] is False
+    assert msg['error']['code'] == 'load_error'
+
+
+async def test_lovelace_ui(hass, hass_ws_client):
+    """Test lovelace_ui command."""
+    await async_setup_component(hass, 'lovelace')
+    client = await hass_ws_client(hass)
+
+    with patch('homeassistant.components.lovelace.load_yaml',
+               return_value={'hello': 'world'}):
+        await client.send_json({
+            'id': 5,
+            'type': 'lovelace/config',
+        })
+        msg = await client.receive_json()
+
+    assert msg['id'] == 5
+    assert msg['type'] == wapi.TYPE_RESULT
+    assert msg['success']
+    assert msg['result'] == {'hello': 'world'}
+
+
+async def test_lovelace_ui_not_found(hass, hass_ws_client):
+    """Test lovelace_ui command cannot find file."""
+    await async_setup_component(hass, 'lovelace')
+    client = await hass_ws_client(hass)
+
+    with patch('homeassistant.components.lovelace.load_yaml',
+               side_effect=FileNotFoundError):
+        await client.send_json({
+            'id': 5,
+            'type': 'lovelace/config',
+        })
+        msg = await client.receive_json()
+
+    assert msg['id'] == 5
+    assert msg['type'] == wapi.TYPE_RESULT
+    assert msg['success'] is False
+    assert msg['error']['code'] == 'file_not_found'
+
+
+async def test_lovelace_ui_load_err(hass, hass_ws_client):
+    """Test lovelace_ui command cannot find file."""
+    await async_setup_component(hass, 'lovelace')
+    client = await hass_ws_client(hass)
+
+    with patch('homeassistant.components.lovelace.load_yaml',
+               side_effect=HomeAssistantError):
+        await client.send_json({
+            'id': 5,
+            'type': 'lovelace/config',
+        })
+        msg = await client.receive_json()
+
+    assert msg['id'] == 5
+    assert msg['type'] == wapi.TYPE_RESULT
+    assert msg['success'] is False
+    assert msg['error']['code'] == 'load_error'