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add new tests for IaC codebase

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Nitin Mishra 2022-12-23 16:14:22 +05:30
parent ddf6f468d5
commit 1df9288cdd
9 changed files with 0 additions and 111 deletions
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23
2022/Days/IaC/Automated-test-with-Terratest/README.md
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# Terratest
Terratest is a Go library developed at Gruntwork, that makes it easier to write automated tests for our infrastructure code. It provides a variety of helper functions and patterns for common infrastructure testing tasks but here we will be discussing about Testing Terraform code.
# To Run this application
* git clone https://github.com/imnitin28/terra-form-test-techhub.git <br />
* cd test <br />
* go mod init "<MODULE_NAME>" <br />
**MODULE_NAME would be github.com/<YOUR_USERNAME>/<YOUR_REPO_NAME>** <br />
* go mod init github.com/<FOLDER-PATH> <br/>
* go run
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
go mod init "<MODULE_NAME>" would create go.mod file into test folder. <br />
* The go.mod file is the root of dependency management in GoLang.
* All the modules which are needed or to be used in the project are maintained here in go.mod file.
* It creates entry for all the packages we are going to use/import in our project.
* It reduces effort for getting each dependencies manually.
On running **go test** for the first time you would get go.sum file created.
* go.sum file is created when **go test** or **go build** is executed for the first time.
* It installs all the packages with specific version(latest)
* we do not need to edit or modify this file.

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2022/Days/IaC/Automated-test-with-Terratest/examples/instance.tf
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resource "aws_instance" "example" {
ami = var.AMIS[var.AWS_REGION]
instance_type = "t2.micro"
vpc_security_group_ids = [aws_security_group.instance.id]
# When the instance boots, start a web server on port 8080 that responds with "Hello, World!".
user_data = <<EOF
#!/bin/bash
echo "Hello, World!" > index.html
nohup busybox httpd -f -p 8080 &
EOF
}

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2022/Days/IaC/Automated-test-with-Terratest/examples/output.tf
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# Output the instance's public IP address.
output "public_ip" {
value = aws_instance.example.public_ip
}

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2022/Days/IaC/Automated-test-with-Terratest/examples/provider.tf
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provider "aws" {
access_key = var.AWS_ACCESS_KEY
secret_key = var.AWS_SECRET_KEY
region = var.AWS_REGION
}

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2022/Days/IaC/Automated-test-with-Terratest/examples/securitygroup.tf
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# Allow the instance to receive requests on port 8080.
resource "aws_security_group" "instance" {
ingress {
from_port = 8080
to_port = 8080
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
}

3
2022/Days/IaC/Automated-test-with-Terratest/examples/terraform.tfvars
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AWS_ACCESS_KEY = "XXXX"
AWS_SECRET_KEY = "XXXXXXXX"
AWS_REGION="ap-south-1"

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2022/Days/IaC/Automated-test-with-Terratest/examples/vars.tf
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variable "AWS_ACCESS_KEY" {
}
variable "AWS_SECRET_KEY" {
}
variable "AWS_REGION" {
default = "ap-south-1"
}
variable "AMIS" {
type = map(string)
default = {
ap-south-1 = "ami-0860c9429baba6ad2"
}
}

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2022/Days/IaC/Automated-test-with-Terratest/examples/versions.tf
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terraform {
required_version = ">= 0.12.26"
}

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2022/Days/IaC/Automated-test-with-Terratest/test/terraform_test.go
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package test
import (
"fmt"
"testing"
"time"
http_helper "github.com/gruntwork-io/terratest/modules/http-helper"
"github.com/gruntwork-io/terratest/modules/terraform"
)
func TestTerraformAwsHelloWorldExample(t *testing.T) {
t.Parallel()
/*Construct the terraform options with default retryable errors to handle the most common retryable errors in terraform testing. */
terraformOptions := terraform.WithDefaultRetryableErrors(t, &terraform.Options{
/* The path to where our Terraform code is located */
TerraformDir: "../examples",
})
/* At the end of the test, run `terraform destroy` to clean up any resources that were created.*/
defer terraform.Destroy(t, terraformOptions)
/* Run `terraform init` and `terraform apply`. Fail the test if there are any errors. */
terraform.InitAndApply(t, terraformOptions)
/* Run `terraform output` to get the IP of the instance */
publicIp := terraform.Output(t, terraformOptions, "public_ip")
/* Make an HTTP request to the instance and make sure we get back a 200 OK with the body "Hello, World!" */
url := fmt.Sprintf("http://%s:8080", publicIp)
http_helper.HttpGetWithRetry(t, url, nil, 200, "Hello, World!", 30, 5*time.Second)
}