Fix regression with CheckInEvent in before_send

Author: sl0thentr0py

sentry-ruby/lib/sentry/client.rb

@@ -184,7 +184,7 @@ def send_event(event, hint = nil)
         event = configuration.before_send.call(event, hint)
 
         case event
-        when ErrorEvent
+        when ErrorEvent, CheckInEvent
           # do nothing
         when Hash
           log_debug(<<~MSG)

sentry-ruby/spec/sentry/client/event_sending_spec.rb

@@ -240,6 +240,18 @@
         end
       end
 
+      context "for check in events" do
+        let(:event_object) { client.event_from_check_in("test_slug", :ok)  }
+
+        it "does not fail due to before_send" do
+          configuration.before_send = lambda { |e, _h| e }
+          client.send_event(event)
+
+          expect(client.transport).to receive(:send_event).with(event)
+          client.send_event(event)
+        end
+      end
+
       it "doesn't apply before_send_transaction to Event" do
         dbl = double("before_send_transaction")
         allow(dbl).to receive(:call)