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: blob_test.go
    path of file: ./repos/harbor/src/registryctl/api/registry/blob
    
    the code of the file until where you have to start completion: package blob

import (
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/docker/distribution/registry/storage/driver/inmemory"
	"github.com/docker/distribution/testutil"
	"github.com/gorilla/mux"
	"github.com/stretchr/testify/assert"

	"github.com/goharbor/harbor/src/registryctl/api/registry/test"
)

func TestDeletionBlob(t *testing.T) {
	inmemoryDriver := inmemory.New()

	registry := test.CreateRegistry(t, inmemoryDriver)
	repo := test.MakeRepository(t, registry, "blobdeletion")

	// Create random layers
	randomLayers1, err := testutil.CreateRandomLayers(3)
	if err != nil {
		t.Fatalf("failed to make layers: %v", err)
	}

	randomLayers2, err := testutil.CreateRandomLayers(3)
	if err != nil {
		t.Fatalf("failed to make layers: %v", err)
	}

	// Upload all layers
	err = testutil.UploadBlobs(repo, randomLayers1)
	if err != nil {
		t.Fatalf("failed to upload layers: %v", err)
	}

	err = testutil.UploadBlobs(repo, randomLayers2)
	if err != nil {
		t.Fatalf("failed to upload layers: %v", err)
	}

	req, err := http.NewRequest(http.MethodDelete, "", nil)
	if err != nil {
		t.Fatalf("failed to create new http request: %v", err)
	}
	varMap := make(map[string]string, 1)
	varMap["reference"] = test.GetKeys(randomLayers1)[0].String()
	req = mux.SetURLVars(req, varMap)

    
func TestDeletionBlob(t *testing.T) {
	inmemoryDriver := inmemory.New()

	registry := test.CreateRegistry(t, inmemoryDriver)
	repo := test.MakeRepository(t, registry, "blobdeletion")

	// Create random layers
	randomLayers1, err := testutil.CreateRandomLayers(3)
	if err != nil {
		t.Fatalf("failed to make layers: %v", err)
	}

	randomLayers2, err := testutil.CreateRandomLayers(3)
	if err != nil {
		t.Fatalf("failed to make layers: %v", err)
	}

	// Upload all layers
	err = testutil.UploadBlobs(repo, randomLayers1)
	if err != nil {
		t.Fatalf("failed to upload layers: %v", err)
	}

	err = testutil.UploadBlobs(repo, randomLayers2)
	if err != nil {
		t.Fatalf("failed to upload layers: %v", err)
	}

	req, err := http.NewRequest(http.MethodDelete, "", nil)
	if err != nil {
		t.Fatalf("failed to create new http request: %v", err)
	}
	varMap := make(map[string]string, 1)
	varMap["reference"] = test.GetKeys(randomLayers1)[0].String()
	req = mux.SetURLVars(req, varMap)

	blobHandler := NewHandler(inmemoryDriver)
	rec := httptest.NewRecorder()
	blobHandler.ServeHTTP(rec, req)
	assert.True(t, rec.Result().StatusCode == 200)

	// layer1 is deleted and layer2 is still there
	blobs := test.AllBlobs(t, registry)
	for dgst := range randomLayers1 {
		if _, ok := blobs[dgst]; !ok {
			t.Logf("random layer 1 blob missing is correct as it has been deleted: %v", dgst)
		}
	}
	for dgst := range randomLayers2 {
		if _, ok := blobs[dgst]; !ok {
			t.Fatalf("random layer 2 blob missing: %v", dgst)
		}
	}
}