Set launch type to FARGATE when use_fargate is true

Author: tomduckering

service.tf

@@ -4,6 +4,7 @@ resource "aws_ecs_service" "service" {
   task_definition = var.always_use_latest_task_definition ? aws_ecs_task_definition.service.arn_without_revision : aws_ecs_task_definition.service.arn
   desired_count   = var.service_desired_count
   iam_role        = (!var.use_fargate && var.attach_to_load_balancer && var.service_task_network_mode != "awsvpc") ? var.ecs_cluster_service_role_arn : null
+  launch_type = var.use_fargate ? "FARGATE" : null
 
   deployment_maximum_percent         = var.service_deployment_maximum_percent
   deployment_minimum_healthy_percent = var.service_deployment_minimum_healthy_percent

spec/integration/fargate_spec.rb

@@ -76,6 +76,11 @@
         .to(eq('REPLICA'))
     end
 
+    it 'has a launch type of "FARGATE"' do
+      expect(ecs_service.launch_type)
+        .to(eq('FARGATE'))
+    end
+
     # it 'has the correct load balancer' do
     #   expect(ecs_service.load_balancers.first.load_balancer_name)
     #     .to(eq(load_balancer_name))

spec/unit/service_spec.rb

@@ -675,6 +675,12 @@
               .with_attribute_value(:iam_role, a_nil_value))
     end
 
+    it 'sets the launch type to "FARGATE"' do
+      expect(@plan)
+        .to(include_resource_creation(type: 'aws_ecs_service')
+              .with_attribute_value(:launch_type, 'FARGATE'))
+    end
+
     # it 'configures VPC networking using the provided subnets' do
     #   expect(@plan)
     #     .to(include_resource_creation(type: 'aws_ecs_service')