Create zwave devices on OZW thread and only add them during discovery (#6096)

* Create zwave devices on OZW thread and only add them during discovery.

* Read and write devices dict from loop thread.

* More async

* replace callback with coroutine

* import common function instead of callin git

tests/components/zwave/test_init.py

@@ -5,8 +5,6 @@ from unittest.mock import MagicMock, patch
 import pytest
 
 from homeassistant.bootstrap import async_setup_component
-from homeassistant.components.zwave import (
-    DATA_DEVICE_CONFIG, DEVICE_CONFIG_SCHEMA_ENTRY)
 
 
 @pytest.fixture(autouse=True)
@@ -24,24 +22,32 @@ def mock_openzwave():
 
 
 @asyncio.coroutine
-def test_device_config(hass):
-    """Test device config stored in hass."""
+def test_valid_device_config(hass):
+    """Test valid device config."""
     device_config = {
         'light.kitchen': {
             'ignored': 'true'
         }
     }
-    yield from async_setup_component(hass, 'zwave', {
+    result = yield from async_setup_component(hass, 'zwave', {
         'zwave': {
             'device_config': device_config
         }})
 
-    assert DATA_DEVICE_CONFIG in hass.data
+    assert result
 
-    test_data = {
-        key: DEVICE_CONFIG_SCHEMA_ENTRY(value)
-        for key, value in device_config.items()
+
+@asyncio.coroutine
+def test_invalid_device_config(hass):
+    """Test invalid device config."""
+    device_config = {
+        'light.kitchen': {
+            'some_ignored': 'true'
+        }
     }
+    result = yield from async_setup_component(hass, 'zwave', {
+        'zwave': {
+            'device_config': device_config
+        }})
 
-    assert hass.data[DATA_DEVICE_CONFIG].get('light.kitchen') == \
-        test_data.get('light.kitchen')
+    assert not result