Files
leadchat/spec/services/auto_assignment/round_robin_selector_spec.rb
Tanmay Deep Sharma c9823d9409 feat: Assignment service (v2) (#12320)
## Linear Link

 
## Description

This PR introduces a new robust auto-assignment system for conversations
in Chatwoot. The system replaces the existing round-robin assignment
with a more sophisticated service-based architecture that supports
multiple assignment strategies, rate limiting, and Enterprise features
like capacity-based assignment and balanced distribution.

## Type of change

- [ ] New feature (non-breaking change which adds functionality)

## How Has This Been Tested?

- Unit test cases
- Test conversations getting assigned on status change to open
- Test the job directly via rails console

## Checklist:

- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Adds a new service-based auto-assignment system with scheduled jobs,
rate limiting, enterprise capacity/balanced selection, and wiring via
inbox/handler; includes Redis helpers and comprehensive tests.
> 
> - **Auto-assignment v2 (core services)**:
> - Add `AutoAssignment::AssignmentService` with bulk assignment,
configurable conversation priority, RR selection, and per-agent rate
limiting via `AutoAssignment::RateLimiter`.
>   - Add `AutoAssignment::RoundRobinSelector` for agent selection.
> - **Jobs & scheduling**:
> - Add `AutoAssignment::AssignmentJob` (per-inbox bulk assign;
env-based limit) and `AutoAssignment::PeriodicAssignmentJob` (batch over
accounts/inboxes).
> - Schedule periodic run in `config/schedule.yml`
(`periodic_assignment_job`).
> - **Model/concerns wiring**:
> - Include `InboxAgentAvailability` in `Inbox`; add
`Inbox#auto_assignment_v2_enabled?`.
> - Update `AutoAssignmentHandler` to trigger v2 job when
`auto_assignment_v2_enabled?`, else fallback to legacy.
> - **Enterprise extensions**:
> - Add `Enterprise::InboxAgentAvailability` (capacity-aware filtering)
and `Enterprise::Concerns::Inbox` association `inbox_capacity_limits`.
> - Extend service via `Enterprise::AutoAssignment::AssignmentService`
(policy-driven config, capacity filtering, exclusion rules) and add
selectors/services: `BalancedSelector`, `CapacityService`.
> - **Infrastructure**:
> - Enhance `Redis::Alfred` with `expire`, key scan/count, and extended
ZSET helpers (`zadd`, `zcount`, `zcard`, `zrangebyscore`).
> - **Tests**:
> - Add specs for jobs, core service, rate limiter, RR selector, and
enterprise features (capacity, balanced selection, exclusions).
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
0ebe187c8aea73765b0122a44b18d6f465c2477f. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>
2025-11-17 10:08:25 +05:30

79 lines
2.9 KiB
Ruby

require 'rails_helper'
RSpec.describe AutoAssignment::RoundRobinSelector do
let(:account) { create(:account) }
let(:inbox) { create(:inbox, account: account) }
let(:selector) { described_class.new(inbox: inbox) }
let(:agent1) { create(:user, account: account, role: :agent, availability: :online) }
let(:agent2) { create(:user, account: account, role: :agent, availability: :online) }
let(:agent3) { create(:user, account: account, role: :agent, availability: :online) }
let(:round_robin_service) { instance_double(AutoAssignment::InboxRoundRobinService) }
let(:member1) do
allow(AutoAssignment::InboxRoundRobinService).to receive(:new).and_return(round_robin_service)
allow(round_robin_service).to receive(:add_agent_to_queue)
create(:inbox_member, inbox: inbox, user: agent1)
end
let(:member2) do
allow(AutoAssignment::InboxRoundRobinService).to receive(:new).and_return(round_robin_service)
allow(round_robin_service).to receive(:add_agent_to_queue)
create(:inbox_member, inbox: inbox, user: agent2)
end
let(:member3) do
allow(AutoAssignment::InboxRoundRobinService).to receive(:new).and_return(round_robin_service)
allow(round_robin_service).to receive(:add_agent_to_queue)
create(:inbox_member, inbox: inbox, user: agent3)
end
before do
# Mock the round robin service to avoid Redis calls
allow(AutoAssignment::InboxRoundRobinService).to receive(:new).and_return(round_robin_service)
allow(round_robin_service).to receive(:add_agent_to_queue)
allow(round_robin_service).to receive(:reset_queue)
allow(round_robin_service).to receive(:validate_queue?).and_return(true)
end
describe '#select_agent' do
context 'when agents are available' do
let(:available_agents) { [member1, member2, member3] }
it 'returns an agent from the available list' do
allow(round_robin_service).to receive(:available_agent).and_return(agent1)
selected_agent = selector.select_agent(available_agents)
expect(selected_agent).not_to be_nil
expect([agent1, agent2, agent3]).to include(selected_agent)
end
it 'uses round robin service for selection' do
expect(round_robin_service).to receive(:available_agent).with(
allowed_agent_ids: [agent1.id.to_s, agent2.id.to_s, agent3.id.to_s]
).and_return(agent1)
selected_agent = selector.select_agent(available_agents)
expect(selected_agent).to eq(agent1)
end
end
context 'when no agents are available' do
it 'returns nil' do
selected_agent = selector.select_agent([])
expect(selected_agent).to be_nil
end
end
context 'when one agent is available' do
it 'returns that agent' do
allow(round_robin_service).to receive(:available_agent).and_return(agent1)
selected_agent = selector.select_agent([member1])
expect(selected_agent).to eq(agent1)
end
end
end
end