go-localstack's Introduction

go-localstack

Go Wrapper for using localstack in go testing

Installation

Please make sure that you have Docker installed.

go get github.com/elgohr/go-localstack

Usage

With SDK V2

func ExampleLocalstackWithContextSdkV2() {
    ctx, cancel := context.WithTimeout(context.Background(), 20*time.Second)
    defer cancel()
    
    l, err := localstack.NewInstance()
    if err != nil {
        log.Fatalf("Could not connect to Docker %v", err)
    }
    if err := l.StartWithContext(ctx); err != nil {
        log.Fatalf("Could not start localstack %v", err)
    }
    
    cfg, err := config.LoadDefaultConfig(ctx,
        config.WithRegion("us-east-1"),
        config.WithEndpointResolverWithOptions(aws.EndpointResolverWithOptionsFunc(func(_, _ string, _ ...interface{}) (aws.Endpoint, error) {
            return aws.Endpoint{
			    PartitionID:       "aws", 
			    URL:               l.EndpointV2(localstack.SQS), 
			    SigningRegion:     "us-east-1", 
			    HostnameImmutable: true,
		    }, nil
        })),
        config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider("dummy", "dummy", "dummy")),
    )
    if err != nil {
        log.Fatalf("Could not get config %v", err)
    }
    
    myTestWithV2(cfg)
}

With SDK V1

func TestWithLocalStack(t *testing.T) {
    ctx, cancel := context.WithTimeout(context.Background(), 20*time.Second)
    defer cancel()

    l, err := localstack.NewInstance()
    if err != nil {
        log.Fatalf("Could not connect to Docker %v", err)
    }
    if err := l.StartWithContext(ctx); err != nil {
        log.Fatalf("Could not start localstack %v", err)
    }

    myTestWith(&aws.Config{
        Credentials: credentials.NewStaticCredentials("not", "empty", ""),
        DisableSSL:  aws.Bool(true),
        Region:      aws.String(endpoints.UsWest1RegionID),
        Endpoint:    aws.String(l.Endpoint(localstack.SQS)),
    })
}

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