batch-api can return response

lib/facebook_ads/batch_api/batch.rb

@@ -32,7 +32,7 @@ def <<(api_req)
 
     def execute
       return [] if operations.empty?
-      operations.each_slice(50) do |slice|
+      operations.each_slice(50).map do |slice|
         api_response = APIRequest.new(:post, '', session: session, params: batch_args(slice)).execute_now
         self.last_api_response = api_response
         slice.zip(api_response.result).map do |req, res|

spec/facebook_ads/batch_api/batch_spec.rb

@@ -0,0 +1,33 @@
+require 'spec_helper'
+
+RSpec.describe FacebookAds::Batch do
+  describe "#execute" do
+    let(:expected_api_response) do
+      status = 200
+      headers = { content_type: "application/json" }
+      body = [
+        {
+          "code" => status,
+          "headers": headers.map { |k, v| { name: k, value: v } },
+          "body" => { "id" => "act_123456", "name" => "test account name" }
+        }
+      ].to_json
+      FacebookAds::APIResponse.new(status, headers, body)
+    end
+    before do
+      expect_any_instance_of(FacebookAds::APIRequest).to receive(:execute_now).and_return(expected_api_response)
+    end
+
+    it do
+      batch = FacebookAds::Batch.with_batch do
+        FacebookAds::AdAccount.get("act_123456").name
+      end
+      batch_api_responses = batch.execute
+      api_responses = batch_api_responses.first
+      api_response = api_responses.first
+
+      expect(api_response).to be_a FacebookAds::AdAccount
+      expect(api_response).to match have_attributes(id: "act_123456", name: "test account name")
+    end
+  end
+end