try unit test

backend.tf

@@ -1,8 +1,8 @@
 terraform {
   backend "s3" {
-    bucket = "b2111933-bucket"
-    key    = "state"
-    region = "us-east-1"
+    bucket         = "b2111933-bucket"
+    key            = "state"
+    region         = "us-east-1"
     dynamodb_table = "b2111933-table"
   }
-}
+}

ec2/main.tf

@@ -1,10 +1,10 @@
 resource "aws_instance" "server" {
-  ami = "ami-066784287e358dad1"
-  instance_type = "t2.micro"
-  subnet_id = var.subnet
+  ami             = "ami-066784287e358dad1"
+  instance_type   = "t2.micro"
+  subnet_id       = var.subnet
   security_groups = [var.security_group]
 
   tags = {
     Name = "myserver"
   }
-}
+}

ec2/outputs.tf

@@ -0,0 +1,7 @@
+output "ami" {
+  value = aws_instance.server.ami
+}
+
+output "instance_type" {
+  value = aws_instance.server.instance_type
+}

ec2/variables.tf

@@ -1,3 +1,3 @@
 variable "security_group" {}
 
-variable "subnet" {}
+variable "subnet" {}

main.tf

@@ -3,7 +3,7 @@ module "vpc" {
 }
 
 module "ec2" {
-  source = "./ec2"
-  subnet = module.vpc.public_subnet
+  source         = "./ec2"
+  subnet         = module.vpc.public_subnet
   security_group = module.vpc.security_group
-}
+}

provider.tf

@@ -1,3 +1,3 @@
 provider "aws" {
   region = "us-east-1"
-}
+}

tests/freeEC2.tftest.hcl

@@ -0,0 +1,19 @@
+variables {
+  ami           = "ami-066784287e358dad1"
+  instance_type = "t2.micro"
+}
+
+run "ec2_tests" {
+  command = plan
+
+  assert {
+    condition     = module.ec2.ami == var.ami
+    error_message = "Not a free AMI type!"
+  }
+
+  assert {
+    condition     = module.ec2.instance_type == var.instance_type
+    error_message = "Not a free instance type!"
+  }
+}
+

variables.tf

@@ -0,0 +1 @@
+

vpc/main.tf

@@ -1,42 +1,42 @@
 #1 virtual private cloud, 1 subnet, 1 security group
 resource "aws_vpc" "myvpc" {
-  cidr_block = "10.0.0.0/16"
+  cidr_block           = "10.0.0.0/16"
   enable_dns_hostnames = true
-  enable_dns_support = true
+  enable_dns_support   = true
 
   tags = {
     "Name" = "myvpc"
   }
 }
 
 resource "aws_subnet" "public_subnet" {
-  vpc_id = aws_vpc.myvpc.id
-  cidr_block = "10.0.1.0/24"
+  vpc_id                  = aws_vpc.myvpc.id
+  cidr_block              = "10.0.1.0/24"
   map_public_ip_on_launch = true
-  availability_zone = "us-east-1a"
+  availability_zone       = "us-east-1a"
 
   tags = {
     "Name" = "public_subnet1"
   }
 }
 
 resource "aws_security_group" "security_group" {
-  vpc_id = aws_vpc.myvpc.id
-  name = "my_security_group"
+  vpc_id      = aws_vpc.myvpc.id
+  name        = "my_security_group"
   description = "Public Security Group"
 
   ingress {
-    from_port = 22
-    to_port = 22
-    protocol = "tcp"
+    from_port   = 22
+    to_port     = 22
+    protocol    = "tcp"
     cidr_blocks = ["0.0.0.0/0"]
   }
 
   egress {
-    from_port = 0
-    to_port = 0
-    protocol = "-1"
+    from_port   = 0
+    to_port     = 0
+    protocol    = "-1"
     cidr_blocks = ["0.0.0.0/0"]
   }
 
-}
+}

vpc/outputs.tf

@@ -4,4 +4,4 @@ output "public_subnet" {
 
 output "security_group" {
   value = aws_security_group.security_group.id
-}
+}

vpc/variables.tf

@@ -0,0 +1 @@
+