Add Google Cloud client project billing info

lib/google_api/cloud_platform/client.rb

 require 'google/apis/container_v1'
+require 'google/apis/cloudbilling_v1'
 require 'google/apis/cloudresourcemanager_v1'
 
 module GoogleApi
@@ -50,6 +51,13 @@ module GoogleApi
         end
       end
 
+      def projects_get_billing_info(project_name)
+        service = Google::Apis::CloudbillingV1::CloudbillingService.new
+        service.authorization = access_token
+
+        service.get_project_billing_info(project_name)
+      end
+
       def projects_zones_clusters_get(project_id, zone, cluster_id)
         service = Google::Apis::ContainerV1::ContainerService.new
         service.authorization = access_token

spec/lib/google_api/cloud_platform/client_spec.rb

@@ -62,6 +62,18 @@ describe GoogleApi::CloudPlatform::Client do
     it { is_expected.to eq(projects) }
   end
 
+  def projects_get_billing_info
+    subject { client.projects_get_billing_info }
+    let(:billing_info) { double }
+
+    before do
+      allow_any_instance_of(Google::Apis::CloudbillingV1::CloudbillingService)
+        .to receive(:get_project_billing_info).and_return(billing_info)
+    end
+
+    it { is_expected.to eq(billing_info) }
+  end
+
   describe '#projects_zones_clusters_get' do
     subject { client.projects_zones_clusters_get(spy, spy, spy) }
     let(:gke_cluster) { double }