Update examples and tests (#44)

* Update examples and tests

examples/asg-dns-agent/README.md

@@ -0,0 +1,20 @@
+# ASG DNS Agent
+
+## Purpose
+
+Configuration in this directory creates a minimal set of resources used to demonstrate the ability of the module to create Route53 records for autoscaling groups.  This example is also used in the Terratest unit tests.
+
+## Requirements
+
+- [Terraform](https://www.terraform.io/downloads.html) 0.12+
+- [Terraform AWS provider](https://github.com/terraform-providers/terraform-provider-aws) 2.0+
+
+## Usage
+
+To run this example :
+
+```
+$ terraform init
+$ terraform plan
+$ terraform apply
+```

example/asg-dns-agent/variables.tf → examples/asg-dns-agent/variables.tf

@@ -1,12 +1,15 @@
 variable "instance_type" {
+  description = "Size of the EC2 instance"
   default = "t2.medium"
 }
 
 variable "min_size" {
+  description = "Minimum number of instances in the autoscaling group"
   default = "1"
 }
 
 variable "max_size" {
+  description = "Maximum number of instances in the autoscaling group"
   default = "3"
 }
 

terratest/test/asg_dns_handler_test.go

@@ -23,7 +23,7 @@ func TestAwsDnsRecordName(t *testing.T) {
 
 	//Specify the path where Terraform code to be tested is loacated
 	terraformOptions := &terraform.Options{
-		TerraformDir: "../../example/asg-dns-agent",
+		TerraformDir: "../../examples/asg-dns-agent",
 	}
 
 	// At the end of the test, run `terraform destroy` to clean up any resources that were created