Silence redundant warnings about slow setup (#11352)

* Downgrade slow domain setup warning

* Revert "Downgrade slow domain setup warning"

This reverts commit 64472c006b.

* Remove warning for entity components

* Remove lint

* Fix original test with extra call

homeassistant/setup.py

@@ -181,9 +181,15 @@ def _async_setup_component(hass: core.HomeAssistant,
 
     start = timer()
     _LOGGER.info("Setting up %s", domain)
-    warn_task = hass.loop.call_later(
-        SLOW_SETUP_WARNING, _LOGGER.warning,
-        "Setup of %s is taking over %s seconds.", domain, SLOW_SETUP_WARNING)
+
+    if hasattr(component, 'PLATFORM_SCHEMA'):
+        # Entity components have their own warning
+        warn_task = None
+    else:
+        warn_task = hass.loop.call_later(
+            SLOW_SETUP_WARNING, _LOGGER.warning,
+            "Setup of %s is taking over %s seconds.",
+            domain, SLOW_SETUP_WARNING)
 
     try:
         if async_comp:
@@ -197,7 +203,8 @@ def _async_setup_component(hass: core.HomeAssistant,
         return False
     finally:
         end = timer()
-        warn_task.cancel()
+        if warn_task:
+            warn_task.cancel()
     _LOGGER.info("Setup of domain %s took %.1f seconds.", domain, end - start)
 
     if result is False:

tests/test_setup.py

@@ -456,7 +456,7 @@ def test_component_warn_slow_setup(hass):
             hass, 'test_component1', {})
         assert result
         assert mock_call.called
-        assert len(mock_call.mock_calls) == 2
+        assert len(mock_call.mock_calls) == 3
 
         timeout, logger_method = mock_call.mock_calls[0][1][:2]
 
@@ -464,3 +464,17 @@ def test_component_warn_slow_setup(hass):
         assert logger_method == setup._LOGGER.warning
 
         assert mock_call().cancel.called
+
+
+@asyncio.coroutine
+def test_platform_no_warn_slow(hass):
+    """Do not warn for long entity setup time."""
+    loader.set_component(
+        'test_component1',
+        MockModule('test_component1', platform_schema=PLATFORM_SCHEMA))
+    with mock.patch.object(hass.loop, 'call_later', mock.MagicMock()) \
+            as mock_call:
+        result = yield from setup.async_setup_component(
+            hass, 'test_component1', {})
+        assert result
+        assert not mock_call.called