support ItemStateUpdatedEvent

Signed-off-by: Jimmy Tanagra <[email protected]>

lib/openhab/core/events/item_state_updated_event.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require_relative "item_state_event"
+
+module OpenHAB
+  module Core
+    module Events
+      begin
+        java_import org.openhab.core.items.events.ItemStateUpdatedEvent
+
+        #
+        # {AbstractEvent} sent when an item's state has updated.
+        #
+        class ItemStateUpdatedEvent < ItemEvent
+          include ItemState
+        end
+      rescue
+        # @deprecated OH3.4 OH3 will raise an error ItemStateUpdatedEvent is only in OH4
+      end
+    end
+  end
+end

spec/openhab/core/events/item_state_updated_event_spec.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+if OpenHAB::Core::Events.const_defined?(:ItemStateUpdatedEvent) # @deprecated OH3.4 - introduced in OH4
+  RSpec.describe OpenHAB::Core::Events::ItemStateUpdatedEvent do
+    it "has proper predicates for a NULL event" do
+      event = org.openhab.core.items.events.ItemEventFactory.create_state_updated_event("item", NULL)
+
+      expect(event).to be_null
+      expect(event).not_to be_undef
+      expect(event.state?).to be false
+      expect(event.state).to be_nil
+    end
+
+    it "has proper predicates for an UNDEF event" do
+      event = org.openhab.core.items.events.ItemEventFactory.create_state_updated_event("item", UNDEF)
+
+      expect(event).not_to be_null
+      expect(event).to be_undef
+      expect(event.state?).to be false
+      expect(event.state).to be_nil
+    end
+
+    it "has proper predicates for an ON event" do
+      event = org.openhab.core.items.events.ItemEventFactory.create_state_updated_event("item", ON)
+
+      expect(event).not_to be_null
+      expect(event).not_to be_undef
+      expect(event.state?).to be true
+      expect(event.state).to be ON
+    end
+  end
+end