Add Picnic shopping cart as Todo list (#102855)

Co-authored-by: Robert Resch <robert@resch.dev>
Co-authored-by: Allen Porter <allen.porter@gmail.com>

tests/components/picnic/test_todo.py

@@ -0,0 +1,54 @@
+"""Tests for Picnic Tasks todo platform."""
+
+from unittest.mock import MagicMock
+
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+async def test_cart_list_with_items(hass: HomeAssistant, init_integration) -> None:
+    """Test loading of shopping cart."""
+    state = hass.states.get("todo.mock_title_shopping_cart")
+    assert state
+    assert state.state == "10"
+
+
+async def test_cart_list_empty_items(
+    hass: HomeAssistant, mock_picnic_api: MagicMock, mock_config_entry: MockConfigEntry
+) -> None:
+    """Test loading of shopping cart without items."""
+    mock_picnic_api.get_cart.return_value = {"items": []}
+    mock_config_entry.add_to_hass(hass)
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    state = hass.states.get("todo.mock_title_shopping_cart")
+    assert state
+    assert state.state == "0"
+
+
+async def test_cart_list_unexpected_response(
+    hass: HomeAssistant, mock_picnic_api: MagicMock, mock_config_entry: MockConfigEntry
+) -> None:
+    """Test loading of shopping cart without expected response."""
+    mock_picnic_api.get_cart.return_value = {}
+    mock_config_entry.add_to_hass(hass)
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    state = hass.states.get("todo.mock_title_shopping_cart")
+    assert state is None
+
+
+async def test_cart_list_null_response(
+    hass: HomeAssistant, mock_picnic_api: MagicMock, mock_config_entry: MockConfigEntry
+) -> None:
+    """Test loading of shopping cart without response."""
+    mock_picnic_api.get_cart.return_value = None
+    mock_config_entry.add_to_hass(hass)
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    state = hass.states.get("todo.mock_title_shopping_cart")
+    assert state is None