feat: Add APIs to manage custom roles in Chatwoot (#9995)

Co-authored-by: Pranav <pranavrajs@gmail.com>

spec/enterprise/models/account_spec.rb

@@ -2,9 +2,15 @@
 
 require 'rails_helper'
 
-RSpec.describe Account do
+RSpec.describe Account, type: :model do
   include ActiveJob::TestHelper
 
+  describe 'associations' do
+    it { is_expected.to have_many(:sla_policies).dependent(:destroy_async) }
+    it { is_expected.to have_many(:applied_slas).dependent(:destroy_async) }
+    it { is_expected.to have_many(:custom_roles).dependent(:destroy_async) }
+  end
+
   describe 'sla_policies' do
     let!(:account) { create(:account) }
     let!(:sla_policy) { create(:sla_policy, account: account) }

spec/enterprise/models/account_user_spec.rb

@@ -2,7 +2,33 @@
 
 require 'rails_helper'
 
-RSpec.describe AccountUser do
+RSpec.describe AccountUser, type: :model do
+  describe 'associations' do
+    # option and dependant nullify
+    it { is_expected.to belong_to(:custom_role).optional }
+  end
+
+  describe 'permissions' do
+    context 'when custom role is assigned' do
+      it 'returns permissions of the custom role along with `custom_role` permission' do
+        account = create(:account)
+        custom_role = create(:custom_role, account: account)
+        account_user = create(:account_user, account: account, custom_role: custom_role)
+
+        expect(account_user.permissions).to eq(custom_role.permissions + ['custom_role'])
+      end
+    end
+
+    context 'when custom role is not assigned' do
+      it 'returns permissions of the default role' do
+        account = create(:account)
+        account_user = create(:account_user, account: account)
+
+        expect(account_user.permissions).to eq([account_user.role])
+      end
+    end
+  end
+
   describe 'audit log' do
     context 'when account user is created' do
       it 'has associated audit log created' do

spec/enterprise/models/custom_role_spec.rb

@@ -0,0 +1,12 @@
+require 'rails_helper'
+
+RSpec.describe CustomRole, type: :model do
+  describe 'associations' do
+    it { is_expected.to belong_to(:account) }
+    it { is_expected.to have_many(:account_users).dependent(:nullify) }
+  end
+
+  describe 'validations' do
+    it { is_expected.to validate_presence_of(:name) }
+  end
+end