LiteJet is now configured using config_flow (#44409)

Co-authored-by: J. Nick Koston <nick@koston.org>

tests/components/litejet/test_config_flow.py

@@ -0,0 +1,77 @@
+"""The tests for the litejet component."""
+from unittest.mock import patch
+
+from serial import SerialException
+
+from homeassistant.components.litejet.const import DOMAIN
+from homeassistant.const import CONF_PORT
+
+from tests.common import MockConfigEntry
+
+
+async def test_show_config_form(hass):
+    """Test show configuration form."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": "user"}
+    )
+
+    assert result["type"] == "form"
+    assert result["step_id"] == "user"
+
+
+async def test_create_entry(hass, mock_litejet):
+    """Test create entry from user input."""
+    test_data = {CONF_PORT: "/dev/test"}
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": "user"}, data=test_data
+    )
+
+    assert result["type"] == "create_entry"
+    assert result["title"] == "/dev/test"
+    assert result["data"] == test_data
+
+
+async def test_flow_entry_already_exists(hass):
+    """Test user input when a config entry already exists."""
+    first_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={CONF_PORT: "/dev/first"},
+    )
+    first_entry.add_to_hass(hass)
+
+    test_data = {CONF_PORT: "/dev/test"}
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": "user"}, data=test_data
+    )
+
+    assert result["type"] == "abort"
+    assert result["reason"] == "single_instance_allowed"
+
+
+async def test_flow_open_failed(hass):
+    """Test user input when serial port open fails."""
+    test_data = {CONF_PORT: "/dev/test"}
+
+    with patch("pylitejet.LiteJet") as mock_pylitejet:
+        mock_pylitejet.side_effect = SerialException
+
+        result = await hass.config_entries.flow.async_init(
+            DOMAIN, context={"source": "user"}, data=test_data
+        )
+
+    assert result["type"] == "form"
+    assert result["errors"][CONF_PORT] == "open_failed"
+
+
+async def test_import_step(hass):
+    """Test initializing via import step."""
+    test_data = {CONF_PORT: "/dev/imported"}
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": "import"}, data=test_data
+    )
+
+    assert result["type"] == "create_entry"
+    assert result["title"] == test_data[CONF_PORT]
+    assert result["data"] == test_data