don't allways fill events. (#336)

Author: pyama86

CHANGELOG.md

@@ -1,6 +1,7 @@
 ### 0.15.1 (Next)
 
 * Your contribution here.
+* [#336](https://github.com/slack-ruby/slack-ruby-client/pull/336): Fix: handle nil events - [@pyama86](https://github.com/pyama86).
 
 ### 0.15.0 (2020/7/26)
 

lib/slack/real_time/client.rb

@@ -251,6 +251,8 @@ def dispatch(event)
       end
 
       def run_handlers(type, data)
+        return unless store.class.events
+
         handlers = store.class.events[type.to_s]
         handlers&.each do |handler|
           store.instance_exec(data, &handler)

spec/slack/real_time/client_spec.rb

@@ -166,6 +166,23 @@
           expect(client.store.team.name).to eq 'New Team Name Inc.'
         end
       end
+
+      describe '#run_handlers' do
+        describe 'empty events' do
+          before do
+            @e = client.store.class.events
+            client.store.class.events = nil
+          end
+
+          after do
+            client.store.class.events = @e
+          end
+
+          it 'returns false when event is nil' do
+            expect(client.send(:run_handlers, 'example', {})).to be nil
+          end
+        end
+      end
     end
 
     describe '#start_async' do