Infrastructure Testing
Modern Testing Approaches
Policy Testing
# OPA policy test example
policy "cloud_resource_naming" {
enforcement_level = "mandatory"
validate_resource "aws_s3_bucket" {
name_pattern = "^[a-z0-9-]+$"
description = "S3 bucket names must be lowercase alphanumeric with hyphens"
}
}
End-to-End Testing
package test
import (
"testing"
"github.com/gruntwork-io/terratest/modules/terraform"
"github.com/stretchr/testify/assert"
)
func TestTerraformDeployment(t *testing.T) {
terraformOptions := &terraform.Options{
TerraformDir: "../examples/complete",
Vars: map[string]interface{}{
"environment": "test",
"region": "us-west-2",
},
}
defer terraform.Destroy(t, terraformOptions)
terraform.InitAndApply(t, terraformOptions)
output := terraform.Output(t, terraformOptions, "cluster_endpoint")
assert.NotEmpty(t, output)
}
Compliance Validation
Checkov Implementation
name: IaC Security Scan
on: [pull_request]
jobs:
scan:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Run Checkov
uses: bridgecrewio/checkov-action@v12
with:
directory: terraform/
framework: terraform
quiet: true
soft_fail: false
Test Categories
Unit Tests
Resource validation
Input validation
Output validation
Variable constraints
Integration Tests
Resource dependencies
Service connections
Network connectivity
IAM permissions
Security Tests
CIS benchmarks
Compliance checks
Security group rules
IAM policies
Performance Tests
Deployment time
Resource limits
Cost estimation
Scaling behavior
Best Practices
Test Environments
Isolated testing accounts
Clean state management
Resource cleanup
Cost controls
Continuous Testing
Pre-commit hooks
CI/CD integration
Automated validation
Drift detection
Documentation
Test coverage reports
Compliance documentation
Change tracking
Test scenarios
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