feat: APIs for Articles (#4777)

Fixes: #4802

spec/models/category_spec.rb

@@ -12,4 +12,39 @@ RSpec.describe Category, type: :model do
     it { is_expected.to have_many(:folders) }
     it { is_expected.to have_many(:articles) }
   end
+
+  describe 'search' do
+    let!(:account) { create(:account) }
+    let(:user) { create(:user, account_ids: [account.id], role: :agent) }
+    let!(:portal_1) { create(:portal, account_id: account.id) }
+    let!(:portal_2) { create(:portal, account_id: account.id) }
+
+    before do
+      create(:category, slug: 'category_1', locale: 'en', portal_id: portal_1.id)
+      create(:category, slug: 'category_2', locale: 'es', portal_id: portal_1.id)
+      create(:category, slug: 'category_3', locale: 'es', portal_id: portal_2.id)
+    end
+
+    context 'when no parameters passed' do
+      it 'returns all the articles in portal' do
+        records = portal_1.categories.search({})
+        expect(records.count).to eq(portal_1.categories.count)
+
+        records = portal_2.categories.search({})
+        expect(records.count).to eq(portal_2.categories.count)
+      end
+    end
+
+    context 'when params passed' do
+      it 'returns all the categories with all the params filters' do
+        params = { locale: 'es' }
+        records = portal_2.categories.search(params)
+        expect(records.count).to eq(1)
+
+        params = { locale: 'en' }
+        records = portal_1.categories.search(params)
+        expect(records.count).to eq(1)
+      end
+    end
+  end
 end