Add support for Notion Home Monitoring (#24634)

* Add support for Notion Home Monitoring

* Updated coverage

* Removed auto-generated translations

* Stale docstrings

* Corrected hardware version

* Fixed binary sensor representation

* Cleanup and update protection

* Updated log message

* Cleaned up is_on

* Updated docstring

* Modified which data is updated during async_update

* Added more checks during update

* More cleanup

* Fixed unhandled exception

* Owner-requested changes (round 1)

* Fixed incorrect scan interval retrieval

* Ugh

* Removed unnecessary import

* Simplified everything via dict lookups

* Ensure bridges are properly registered

* Fixed tests

* Added catch for invalid credentials

* Ensure bridge ID is updated as necessary

* Updated method name

* Simplified bridge update

* Add support for updating bridge via_device_id

* Device update guard clause

* Removed excess whitespace

* Whitespace

* Owner comments

* Member comments

tests/components/notion/test_config_flow.py

@@ -0,0 +1,104 @@
+"""Define tests for the Notion config flow."""
+import aionotion
+import pytest
+
+from homeassistant import data_entry_flow
+from homeassistant.components.notion import DOMAIN, config_flow
+from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
+
+from tests.common import MockConfigEntry, MockDependency, mock_coro
+
+
+@pytest.fixture
+def mock_client_coro():
+    """Define a fixture for a client creation coroutine."""
+    return mock_coro()
+
+
+@pytest.fixture
+def mock_aionotion(mock_client_coro):
+    """Mock the aionotion library."""
+    with MockDependency('aionotion') as mock_:
+        mock_.async_get_client.return_value = mock_client_coro
+        yield mock_
+
+
+async def test_duplicate_error(hass):
+    """Test that errors are shown when duplicates are added."""
+    conf = {
+        CONF_USERNAME: 'user@host.com',
+        CONF_PASSWORD: 'password123',
+    }
+
+    MockConfigEntry(domain=DOMAIN, data=conf).add_to_hass(hass)
+    flow = config_flow.NotionFlowHandler()
+    flow.hass = hass
+
+    result = await flow.async_step_user(user_input=conf)
+    assert result['errors'] == {CONF_USERNAME: 'identifier_exists'}
+
+
+@pytest.mark.parametrize(
+    'mock_client_coro',
+    [mock_coro(exception=aionotion.errors.NotionError)])
+async def test_invalid_credentials(hass, mock_aionotion):
+    """Test that an invalid API/App Key throws an error."""
+    conf = {
+        CONF_USERNAME: 'user@host.com',
+        CONF_PASSWORD: 'password123',
+    }
+
+    flow = config_flow.NotionFlowHandler()
+    flow.hass = hass
+
+    result = await flow.async_step_user(user_input=conf)
+    assert result['errors'] == {'base': 'invalid_credentials'}
+
+
+async def test_show_form(hass):
+    """Test that the form is served with no input."""
+    flow = config_flow.NotionFlowHandler()
+    flow.hass = hass
+
+    result = await flow.async_step_user(user_input=None)
+
+    assert result['type'] == data_entry_flow.RESULT_TYPE_FORM
+    assert result['step_id'] == 'user'
+
+
+async def test_step_import(hass, mock_aionotion):
+    """Test that the import step works."""
+    conf = {
+        CONF_USERNAME: 'user@host.com',
+        CONF_PASSWORD: 'password123',
+    }
+
+    flow = config_flow.NotionFlowHandler()
+    flow.hass = hass
+
+    result = await flow.async_step_import(import_config=conf)
+    assert result['type'] == data_entry_flow.RESULT_TYPE_CREATE_ENTRY
+    assert result['title'] == 'user@host.com'
+    assert result['data'] == {
+        CONF_USERNAME: 'user@host.com',
+        CONF_PASSWORD: 'password123',
+    }
+
+
+async def test_step_user(hass, mock_aionotion):
+    """Test that the user step works."""
+    conf = {
+        CONF_USERNAME: 'user@host.com',
+        CONF_PASSWORD: 'password123',
+    }
+
+    flow = config_flow.NotionFlowHandler()
+    flow.hass = hass
+
+    result = await flow.async_step_user(user_input=conf)
+    assert result['type'] == data_entry_flow.RESULT_TYPE_CREATE_ENTRY
+    assert result['title'] == 'user@host.com'
+    assert result['data'] == {
+        CONF_USERNAME: 'user@host.com',
+        CONF_PASSWORD: 'password123',
+    }