Add effect support for light strips (#293)

* Add effect support for KL430

* KL400 supports effects

* Add KL400 fixture

* Comments from review

* actually commit the remove

kasa/tests/test_lightstrip.py

@@ -1,4 +1,7 @@
+import pytest
+
 from kasa import DeviceType, SmartLightStrip
+from kasa.exceptions import SmartDeviceException
 
 from .conftest import lightstrip, pytestmark
 
@@ -15,3 +18,19 @@ async def test_lightstrip_effect(dev: SmartLightStrip):
     assert isinstance(dev.effect, dict)
     for k in ["brightness", "custom", "enable", "id", "name"]:
         assert k in dev.effect
+
+
+@lightstrip
+async def test_effects_lightstrip_set_effect(dev: SmartLightStrip):
+    with pytest.raises(SmartDeviceException):
+        await dev.set_effect("Not real")
+
+    await dev.set_effect("Candy Cane")
+    assert dev.effect["name"] == "Candy Cane"
+    assert dev.state_information["Effect"] == "Candy Cane"
+
+
+@lightstrip
+async def test_effects_lightstrip_has_effects(dev: SmartLightStrip):
+    assert dev.has_effects is True
+    assert dev.effect_list