fix: captain talking over support agent (#13673)

spec/enterprise/models/message_spec.rb

@@ -23,4 +23,69 @@ RSpec.describe Message do
     expect(conversation.first_reply_created_at).not_to be_nil
     expect(conversation.waiting_since).to be_nil
   end
+
+  describe '#mark_pending_conversation_as_open_for_human_response' do
+    let(:conversation) { create(:conversation, status: :pending) }
+    let(:captain_assistant) { create(:captain_assistant, account: conversation.account) }
+    let(:auto_open_activity_content) { I18n.t('conversations.activity.captain.auto_opened_after_agent_reply', locale: conversation.account.locale) }
+
+    before do
+      create(:captain_inbox, inbox: conversation.inbox, captain_assistant: captain_assistant)
+    end
+
+    it 'marks the conversation open when a human sends a public outgoing message' do
+      create(:message, message_type: :outgoing, conversation: conversation)
+
+      expect(conversation.reload.open?).to be true
+    end
+
+    it 'creates an activity message when a human sends a public outgoing message' do
+      expect do
+        create(:message, message_type: :outgoing, conversation: conversation)
+      end.to have_enqueued_job(Conversations::ActivityMessageJob).with(
+        conversation,
+        {
+          account_id: conversation.account_id,
+          inbox_id: conversation.inbox_id,
+          message_type: :activity,
+          content: auto_open_activity_content
+        }
+      )
+    end
+
+    it 'creates an activity message for external echo replies' do
+      message = build(
+        :message,
+        message_type: :outgoing,
+        conversation: conversation,
+        content_attributes: { external_echo: true }
+      )
+      message.sender = nil
+
+      expect do
+        message.save!
+      end.to have_enqueued_job(Conversations::ActivityMessageJob).with(
+        conversation,
+        {
+          account_id: conversation.account_id,
+          inbox_id: conversation.inbox_id,
+          message_type: :activity,
+          content: auto_open_activity_content
+        }
+      )
+    end
+
+    it 'does not mark the conversation open for private outgoing messages' do
+      create(:message, message_type: :outgoing, conversation: conversation, private: true)
+
+      expect(conversation.reload.pending?).to be true
+    end
+
+    it 'does not mark the conversation open for bot outgoing messages' do
+      agent_bot = create(:agent_bot, account: conversation.account)
+      create(:message, message_type: :outgoing, conversation: conversation, sender: agent_bot)
+
+      expect(conversation.reload.pending?).to be true
+    end
+  end
 end