github.com/darmach/terratest@v0.34.8-0.20210517103231-80931f95e3ff/modules/aws/s3_test.go

// Integration tests that validate S3-related code in AWS.
package aws

import (
	"fmt"
	"math/rand"
	"strconv"
	"strings"
	"testing"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/service/s3"
	"github.com/aws/aws-sdk-go/service/s3/s3manager"
	"github.com/gruntwork-io/terratest/modules/logger"
	"github.com/gruntwork-io/terratest/modules/random"
	"github.com/stretchr/testify/require"
)

func TestCreateAndDestroyS3Bucket(t *testing.T) {
	t.Parallel()

	region := GetRandomStableRegion(t, nil, nil)
	id := random.UniqueId()
	logger.Logf(t, "Random values selected. Region = %s, Id = %s\n", region, id)

	s3BucketName := "gruntwork-terratest-" + strings.ToLower(id)

	CreateS3Bucket(t, region, s3BucketName)
	DeleteS3Bucket(t, region, s3BucketName)
}

func TestAssertS3BucketExistsNoFalseNegative(t *testing.T) {
	t.Parallel()

	region := GetRandomStableRegion(t, nil, nil)
	s3BucketName := "gruntwork-terratest-" + strings.ToLower(random.UniqueId())
	logger.Logf(t, "Random values selected. Region = %s, s3BucketName = %s\n", region, s3BucketName)

	CreateS3Bucket(t, region, s3BucketName)
	defer DeleteS3Bucket(t, region, s3BucketName)

	AssertS3BucketExists(t, region, s3BucketName)
}

func TestAssertS3BucketExistsNoFalsePositive(t *testing.T) {
	t.Parallel()

	region := GetRandomStableRegion(t, nil, nil)
	s3BucketName := "gruntwork-terratest-" + strings.ToLower(random.UniqueId())
	logger.Logf(t, "Random values selected. Region = %s, s3BucketName = %s\n", region, s3BucketName)

	// We elect not to create the S3 bucket to confirm that our function correctly reports it doesn't exist.
	//aws.CreateS3Bucket(region, s3BucketName)

	err := AssertS3BucketExistsE(t, region, s3BucketName)
	if err == nil {
		t.Fatalf("Function claimed that S3 Bucket '%s' exists, but in fact it does not.", s3BucketName)
	}
}

func TestAssertS3BucketVersioningEnabled(t *testing.T) {
	t.Parallel()

	region := GetRandomStableRegion(t, nil, nil)
	s3BucketName := "gruntwork-terratest-" + strings.ToLower(random.UniqueId())
	logger.Logf(t, "Random values selected. Region = %s, s3BucketName = %s\n", region, s3BucketName)

	CreateS3Bucket(t, region, s3BucketName)
	defer DeleteS3Bucket(t, region, s3BucketName)
	PutS3BucketVersioning(t, region, s3BucketName)

	AssertS3BucketVersioningExists(t, region, s3BucketName)
}

func TestEmptyS3Bucket(t *testing.T) {
	t.Parallel()

	// region := GetRandomStableRegion(t, nil, nil)
	region := "us-east-1"
	id := random.UniqueId()
	logger.Logf(t, "Random values selected. Region = %s, Id = %s\n", region, id)

	s3BucketName := "gruntwork-terratest-" + strings.ToLower(id)

	CreateS3Bucket(t, region, s3BucketName)
	defer DeleteS3Bucket(t, region, s3BucketName)

	s3Client, err := NewS3ClientE(t, region)
	if err != nil {
		t.Fatal(err)
	}

	testEmptyBucket(t, s3Client, region, s3BucketName)
}

func TestEmptyS3BucketVersioned(t *testing.T) {
	t.Parallel()

	region := GetRandomStableRegion(t, nil, nil)

	id := random.UniqueId()
	logger.Logf(t, "Random values selected. Region = %s, Id = %s\n", region, id)

	s3BucketName := "gruntwork-terratest-" + strings.ToLower(id)

	CreateS3Bucket(t, region, s3BucketName)
	defer DeleteS3Bucket(t, region, s3BucketName)

	s3Client, err := NewS3ClientE(t, region)
	if err != nil {
		t.Fatal(err)
	}

	versionInput := &s3.PutBucketVersioningInput{
		Bucket: aws.String(s3BucketName),
		VersioningConfiguration: &s3.VersioningConfiguration{
			MFADelete: aws.String("Disabled"),
			Status:    aws.String("Enabled"),
		},
	}

	_, err = s3Client.PutBucketVersioning(versionInput)
	if err != nil {
		t.Fatal(err)
	}

	testEmptyBucket(t, s3Client, region, s3BucketName)
}

func TestAssertS3BucketPolicyExists(t *testing.T) {
	t.Parallel()

	region := GetRandomStableRegion(t, nil, nil)

	id := random.UniqueId()
	logger.Logf(t, "Random values selected. Region = %s, Id = %s\n", region, id)

	s3BucketName := "gruntwork-terratest-" + strings.ToLower(id)
	exampleBucketPolicy := fmt.Sprintf(`{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Principal":{"AWS":["*"]},"Action":"s3:Get*","Resource":"arn:aws:s3:::%s/*","Condition":{"Bool":{"aws:SecureTransport":"false"}}}]}`, s3BucketName)

	CreateS3Bucket(t, region, s3BucketName)
	defer DeleteS3Bucket(t, region, s3BucketName)
	PutS3BucketPolicy(t, region, s3BucketName, exampleBucketPolicy)

	AssertS3BucketPolicyExists(t, region, s3BucketName)

}

func testEmptyBucket(t *testing.T, s3Client *s3.S3, region string, s3BucketName string) {
	expectedFileCount := rand.Intn(10000)
	logger.Logf(t, "Uploading %s files to bucket %s", strconv.Itoa(expectedFileCount), s3BucketName)

	deleted := 0

	// Upload expectedFileCount files
	for i := 1; i <= expectedFileCount; i++ {
		key := fmt.Sprintf("test-%s", strconv.Itoa(i))
		body := strings.NewReader("This is the body")

		params := &s3manager.UploadInput{
			Bucket: aws.String(s3BucketName),
			Key:    &key,
			Body:   body,
		}

		uploader := NewS3Uploader(t, region)

		_, err := uploader.Upload(params)
		if err != nil {
			t.Fatal(err)
		}

		// Delete the first 10 files to be able to test if all files, including delete markers are deleted
		if i < 10 {
			_, err := s3Client.DeleteObject(&s3.DeleteObjectInput{
				Bucket: aws.String(s3BucketName),
				Key:    aws.String(key),
			})
			if err != nil {
				t.Fatal(err)
			}
			deleted++
		}

		if i != 0 && i%100 == 0 {
			logger.Logf(t, "Uploaded %s files to bucket %s successfully", strconv.Itoa(i), s3BucketName)
		}
	}

	logger.Logf(t, "Uploaded %s files to bucket %s successfully", strconv.Itoa(expectedFileCount), s3BucketName)

	// verify bucket contains 1 file now
	listObjectsParams := &s3.ListObjectsV2Input{
		Bucket: aws.String(s3BucketName),
	}

	logger.Logf(t, "Verifying %s files were uploaded to bucket %s", strconv.Itoa(expectedFileCount), s3BucketName)
	actualCount := 0
	for {
		bucketObjects, err := s3Client.ListObjectsV2(listObjectsParams)
		if err != nil {
			t.Fatal(err)
		}

		pageLength := len((*bucketObjects).Contents)
		actualCount += pageLength

		if !*bucketObjects.IsTruncated {
			break
		}

		listObjectsParams.ContinuationToken = bucketObjects.NextContinuationToken
	}

	require.Equal(t, expectedFileCount-deleted, actualCount)

	//empty bucket
	logger.Logf(t, "Emptying bucket %s", s3BucketName)
	EmptyS3Bucket(t, region, s3BucketName)

	// verify the bucket is empty
	bucketObjects, err := s3Client.ListObjectsV2(listObjectsParams)
	if err != nil {
		t.Fatal(err)
	}
	require.Equal(t, 0, len((*bucketObjects).Contents))
}