Add panel custom to load any webcomponent (#2747)

tests/components/test_panel_custom.py

@@ -0,0 +1,77 @@
+"""The tests for the panel_custom component."""
+import os
+import shutil
+from tempfile import NamedTemporaryFile
+import unittest
+from unittest.mock import patch
+
+from homeassistant import bootstrap
+from homeassistant.components import panel_custom
+
+from tests.common import get_test_home_assistant
+
+
+@patch('homeassistant.components.frontend.setup', return_value=True)
+class TestPanelCustom(unittest.TestCase):
+    """Test the panel_custom component."""
+
+    def setup_method(self, method):
+        """Setup things to be run when tests are started."""
+        self.hass = get_test_home_assistant()
+
+    def teardown_method(self, method):
+        """Stop everything that was started."""
+        self.hass.stop()
+        shutil.rmtree(self.hass.config.path(panel_custom.PANEL_DIR),
+                      ignore_errors=True)
+
+    @patch('homeassistant.components.panel_custom.register_panel')
+    def test_webcomponent_in_panels_dir(self, mock_register, _mock_setup):
+        """Test if a web component is found in config panels dir."""
+        config = {
+            'panel_custom': {
+                'name': 'todomvc',
+            }
+        }
+
+        assert not bootstrap.setup_component(self.hass, 'panel_custom', config)
+        assert not mock_register.called
+
+        path = self.hass.config.path(panel_custom.PANEL_DIR)
+        os.mkdir(path)
+
+        with open(os.path.join(path, 'todomvc.html'), 'a'):
+            assert bootstrap.setup_component(self.hass, 'panel_custom', config)
+            assert mock_register.called
+
+    @patch('homeassistant.components.panel_custom.register_panel')
+    def test_webcomponent_custom_path(self, mock_register, _mock_setup):
+        """Test if a web component is found in config panels dir."""
+        with NamedTemporaryFile() as fp:
+            config = {
+                'panel_custom': {
+                    'name': 'todomvc',
+                    'webcomponent_path': fp.name,
+                    'sidebar_title': 'Sidebar Title',
+                    'sidebar_icon': 'mdi:iconicon',
+                    'url_path': 'nice_url',
+                    'config': 5,
+                }
+            }
+
+            with patch('os.path.isfile', return_value=False):
+                assert not bootstrap.setup_component(self.hass, 'panel_custom',
+                                                     config)
+                assert not mock_register.called
+
+            assert bootstrap.setup_component(self.hass, 'panel_custom', config)
+            assert mock_register.called
+            args = mock_register.mock_calls[0][1]
+            kwargs = mock_register.mock_calls[0][2]
+            assert args == (self.hass, 'todomvc', fp.name)
+            assert kwargs == {
+                'config': 5,
+                'url_path': 'nice_url',
+                'sidebar_icon': 'mdi:iconicon',
+                'sidebar_title': 'Sidebar Title'
+            }