fixed test spec and remove uncessary test files

app/controllers/api/restaurant/zone_controller.rb

@@ -1,4 +0,0 @@
-class Api::Restaurant::ZoneController < ApplicationController
-  def index
-  end
-end

app/controllers/api/restaurant/zones_controller.rb

@@ -0,0 +1,5 @@
+class Api::Restaurant::ZonesController < ActionController::API
+  def index
+      render json: Zone.where("is_active = true")
+  end
+end

app/views/api/restaurant/zone/index.html.erb

@@ -1,2 +0,0 @@
-<h1>Api::Restaurant::Zone#index</h1>
-<p>Find me in app/views/api/restaurant/zone/index.html.erb</p>

config/routes.rb

@@ -1,7 +1,7 @@
 Rails.application.routes.draw do
-  namespace :api do
+  namespace :api,  :defaults => { :format => 'json' } do
     namespace :restaurant do
-      get 'zone/index'
+      get 'zones' => "zones#index"
     end
   end
 

spec/controllers/api/restaurant/zone_controller_spec.rb

@@ -1,12 +0,0 @@
-require 'rails_helper'
-
-RSpec.describe Api::Restaurant::ZoneController, type: :controller do
-
-  describe "GET #index" do
-    it "returns http success" do
-      get :index
-      expect(response).to have_http_status(:success)
-    end
-  end
-
-end