Chore: Added tests for subscriptions_controller (#483)

Added tests for subscriptions_controller
ref: #37

spec/controllers/api/v1/subscriptions_controller_spec.rb

@@ -0,0 +1,46 @@
+require 'rails_helper'
+
+RSpec.describe 'Subscriptions API', type: :request do
+  let(:account) { create(:account) }
+
+  describe 'GET /api/v1/subscriptions' do
+    context 'when it is an unauthenticated user' do
+      it 'returns unauthorized' do
+        ENV['BILLING_ENABLED'] = 'true'
+
+        get '/api/v1/subscriptions'
+
+        expect(response).to have_http_status(:unauthorized)
+
+        ENV['BILLING_ENABLED'] = nil
+      end
+    end
+
+    context 'when it is an authenticated user' do
+      let(:agent) { create(:user, account: account, role: :agent) }
+
+      it 'returns all subscriptions' do
+        ENV['BILLING_ENABLED'] = 'true'
+
+        get '/api/v1/subscriptions',
+            headers: agent.create_new_auth_token,
+            as: :json
+
+        expect(response).to have_http_status(:success)
+        expect(JSON.parse(response.body)).to eq(account.subscription_data.as_json)
+
+        ENV['BILLING_ENABLED'] = nil
+      end
+
+      it 'throws 404 error if env variable is not set' do
+        ENV['BILLING_ENABLED'] = nil
+
+        get '/api/v1/subscriptions',
+            headers: agent.create_new_auth_token,
+            as: :json
+
+        expect(response).to have_http_status(:not_found)
+      end
+    end
+  end
+end