You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: terraform_backend_example_test.go
    path of file: ./repos/terratest/test
    
    the code of the file until where you have to start completion: package test

import (
	"fmt"
	"strings"
	"testing"

	"github.com/gruntwork-io/terratest/modules/aws"
	"github.com/gruntwork-io/terratest/modules/random"
	"github.com/gruntwork-io/terratest/modules/terraform"
	"github.com/stretchr/testify/require"
)

// An example of how to test the Terraform module in examples/terraform-backend-example using Terratest.
func TestTerraformBacke
    
func TestTerraformBackendExample(t *testing.T) {
	t.Parallel()

	awsRegion := aws.GetRandomRegion(t, nil, nil)
	uniqueId := random.UniqueId()

	// Create an S3 bucket where we can store state
	bucketName := fmt.Sprintf("test-terraform-backend-example-%s", strings.ToLower(uniqueId))
	defer cleanupS3Bucket(t, awsRegion, bucketName)
	aws.CreateS3Bucket(t, awsRegion, bucketName)

	key := fmt.Sprintf("%s/terraform.tfstate", uniqueId)
	data := fmt.Sprintf("data-for-test-%s", uniqueId)

	// Deploy the module, configuring it to use the S3 bucket as an S3 backend
	terraformOptions := terraform.WithDefaultRetryableErrors(t, &terraform.Options{
		TerraformDir: "../examples/terraform-backend-example",
		Vars: map[string]interface{}{
			"foo": data,
		},
		BackendConfig: map[string]interface{}{
			"bucket": bucketName,
			"key":    key,
			"region": awsRegion,
		},
	})

	defer terraform.Destroy(t, terraformOptions)
	terraform.InitAndApply(t, terraformOptions)

	// Check a state file actually got stored and contains our data in it somewhere (since that data is used in an
	// output of the Terraform code)
	contents := aws.GetS3ObjectContents(t, awsRegion, bucketName, key)
	require.Contains(t, contents, data)

	// The module doesn't really *do* anything, so we just check a dummy output here and move on
	foo := terraform.OutputRequired(t, terraformOptions, "foo")
	require.Equal(t, data, foo)
}