Terratest

ELI5 — The Vibe Check

Terratest is a Go library for testing your infrastructure code. Write Terraform? Test it with Terratest. It deploys your infrastructure to a real cloud environment, validates it works, then tears it down. It's like a test drive for your infrastructure — actually build it, check it, demolish it.

Real Talk

Terratest is a Go library for automated testing of infrastructure code. It deploys real infrastructure (Terraform, Packer, Docker, Kubernetes), validates behavior through HTTP requests, SSH commands, and API calls, then destroys resources. Provides retry logic and helper functions for cloud APIs.

Show Me The Code

func TestTerraform(t *testing.T) {
  opts := &terraform.Options{
    TerraformDir: "../modules/vpc",
  }
  defer terraform.Destroy(t, opts)
  terraform.InitAndApply(t, opts)
  vpcId := terraform.Output(t, opts, "vpc_id")
  assert.NotEmpty(t, vpcId)
}

When You'll Hear This

"Terratest deploys a real VPC, validates the CIDR, then tears it down." / "Every Terraform module has Terratest coverage — we don't merge without it."