integration-tests/storage/integration_test.go - google-api-go-client - Git at Google

 // Copyright 2017 Google LLC.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.

 // +build integration

 package storage

 import (
 	"bytes"
 	"context"
 	"encoding/base64"
 	"errors"
 	"fmt"
 	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
 	"strings"
 	"testing"

 	"golang.org/x/oauth2"
 	"golang.org/x/oauth2/google"
 	"google.golang.org/api/googleapi"
 	storage "google.golang.org/api/storage/v1"
 )

 type object struct {
 	name, contents string
 }

 var (
 	projectID string
 	bucket    string
 	objects   = []object{
 		{"obj1", testContents},
 		{"obj2", testContents},
 		{"obj/with/slashes", testContents},
 		{"resumable", testContents},
 		{"large", strings.Repeat("a", 514)}, // larger than the first section of content that is sniffed by ContentSniffer.
 	}
 	aclObjects = []string{"acl1", "acl2"}
 	copyObj    = "copy-object"
 )

 const (
 	envProject    = "GCLOUD_TESTS_GOLANG_PROJECT_ID"
 	envPrivateKey = "GCLOUD_TESTS_GOLANG_KEY"
 	// NOTE that running this test on a bucket deletes ALL contents of the bucket!
 	envBucket    = "GCLOUD_TESTS_GOLANG_DESTRUCTIVE_TEST_BUCKET_NAME"
 	testContents = "some text that will be saved to a bucket object"
 )

 func verifyAcls(obj *storage.Object, wantDomainRole, wantAllUsersRole string) (err error) {
 	var gotDomainRole, gotAllUsersRole string
 	for _, acl := range obj.Acl {
 		if acl.Entity == "domain-google.com" {
 			gotDomainRole = acl.Role
 		}
 		if acl.Entity == "allUsers" {
 			gotAllUsersRole = acl.Role
 		}
 	}
 	if gotDomainRole != wantDomainRole {
 		err = fmt.Errorf("domain-google.com role = %q; want %q", gotDomainRole, wantDomainRole)
 	}
 	if gotAllUsersRole != wantAllUsersRole {
 		err = fmt.Errorf("allUsers role = %q; want %q; %v", gotAllUsersRole, wantAllUsersRole, err)
 	}
 	return err
 }

 // TODO(gmlewis): Move this to a common location.
 func tokenSource(ctx context.Context, scopes ...string) (oauth2.TokenSource, error) {
 	keyFile := os.Getenv(envPrivateKey)
 	if keyFile == "" {
 		return nil, errors.New(envPrivateKey + " not set")
 	}
 	jsonKey, err := ioutil.ReadFile(keyFile)
 	if err != nil {
 		return nil, fmt.Errorf("unable to read %q: %v", keyFile, err)
 	}
 	conf, err := google.JWTConfigFromJSON(jsonKey, scopes...)
 	if err != nil {
 		return nil, fmt.Errorf("google.JWTConfigFromJSON: %v", err)
 	}
 	return conf.TokenSource(ctx), nil
 }

 const defaultType = "text/plain; charset=utf-8"

 // writeObject writes some data and default metadata to the specified object.
 // Resumable upload is used if resumable is true.
 // The written data is returned.
 func writeObject(s *storage.Service, bucket, obj string, resumable bool, contents string) error {
 	o := &storage.Object{
 		Bucket:          bucket,
 		Name:            obj,
 		ContentType:     defaultType,
 		ContentEncoding: "utf-8",
 		ContentLanguage: "en",
 		Metadata:        map[string]string{"foo": "bar"},
 	}
 	f := strings.NewReader(contents)
 	insert := s.Objects.Insert(bucket, o)
 	if resumable {
 		insert.ResumableMedia(context.Background(), f, int64(len(contents)), defaultType)
 	} else {
 		insert.Media(f)
 	}
 	_, err := insert.Do()
 	return err
 }

 func checkMetadata(t *testing.T, s *storage.Service, bucket, obj string) {
 	o, err := s.Objects.Get(bucket, obj).Do()
 	if err != nil {
 		t.Error(err)
 	}
 	if got, want := o.Name, obj; got != want {
 		t.Errorf("name of %q = %q; want %q", obj, got, want)
 	}
 	if got, want := o.ContentType, defaultType; got != want {
 		t.Errorf("contentType of %q = %q; want %q", obj, got, want)
 	}
 	if got, want := o.Metadata["foo"], "bar"; got != want {
 		t.Errorf("metadata entry foo of %q = %q; want %q", obj, got, want)
 	}
 }

 func createService() *storage.Service {
 	if projectID = os.Getenv(envProject); projectID == "" {
 		log.Print("no project ID specified")
 		return nil
 	}
 	if bucket = os.Getenv(envBucket); bucket == "" {
 		log.Print("no bucket specified")
 		return nil
 	}

 	ctx := context.Background()
 	ts, err := tokenSource(ctx, storage.DevstorageFullControlScope)
 	if err != nil {
 		log.Printf("tokenSource: %v", err)
 		return nil
 	}
 	client := oauth2.NewClient(ctx, ts)
 	s, err := storage.New(client)
 	if err != nil {
 		log.Printf("unable to create service: %v", err)
 		return nil
 	}
 	return s
 }

 func TestMain(m *testing.M) {
 	if err := cleanup(); err != nil {
 		log.Fatalf("Pre-test cleanup failed: %v", err)
 	}
 	exit := m.Run()
 	if err := cleanup(); err != nil {
 		log.Fatalf("Post-test cleanup failed: %v", err)
 	}
 	os.Exit(exit)
 }

 func TestContentType(t *testing.T) {
 	s := createService()
 	if s == nil {
 		t.Fatal("Could not create service")
 	}

 	type testCase struct {
 		objectContentType    string
 		useOptionContentType bool
 		optionContentType    string

 		wantContentType string
 	}

 	// The Media method will use resumable upload if the supplied data is
 	// larger than googleapi.DefaultUploadChunkSize We run the following
 	// tests with two different file contents: one that will trigger
 	// resumable upload, and one that won't.
 	forceResumableData := bytes.Repeat([]byte("a"), googleapi.DefaultUploadChunkSize+1)
 	smallData := bytes.Repeat([]byte("a"), 2)

 	// In the following test, the content type, if any, in the Object struct is always "text/plain".
 	// The content type configured via googleapi.ContentType, if any, is always "text/html".
 	for _, tc := range []testCase{
 		// With content type specified in the object struct
 		// Temporarily disable this test during rollout of strict Content-Type.
 		// TODO(djd): Re-enable once strict check is 100%.
 		// {
 		// 	objectContentType:    "text/plain",
 		// 	useOptionContentType: true,
 		// 	optionContentType:    "text/html",
 		// 	wantContentType:      "text/html",
 		// },
 		{
 			objectContentType:    "text/plain",
 			useOptionContentType: true,
 			optionContentType:    "",
 			wantContentType:      "text/plain",
 		},
 		{
 			objectContentType:    "text/plain",
 			useOptionContentType: false,
 			wantContentType:      "text/plain",
 		},

 		// Without content type specified in the object struct
 		{
 			useOptionContentType: true,
 			optionContentType:    "text/html",
 			wantContentType:      "text/html",
 		},
 		{
 			useOptionContentType: true,
 			optionContentType:    "",
 			wantContentType:      "", // Result is an object without a content type.
 		},
 		{
 			useOptionContentType: false,
 			wantContentType:      "text/plain; charset=utf-8", // sniffed.
 		},
 	} {
 		// The behavior should be the same, regardless of whether resumable upload is used or not.
 		for _, data := range [][]byte{smallData, forceResumableData} {
 			o := &storage.Object{
 				Bucket:      bucket,
 				Name:        "test-content-type",
 				ContentType: tc.objectContentType,
 			}
 			call := s.Objects.Insert(bucket, o)
 			var opts []googleapi.MediaOption
 			if tc.useOptionContentType {
 				opts = append(opts, googleapi.ContentType(tc.optionContentType))
 			}
 			call.Media(bytes.NewReader(data), opts...)

 			_, err := call.Do()
 			if err != nil {
 				t.Fatalf("unable to insert object %q: %v", o.Name, err)
 			}

 			readObj, err := s.Objects.Get(bucket, o.Name).Do()
 			if err != nil {
 				t.Error(err)
 			}
 			if got, want := readObj.ContentType, tc.wantContentType; got != want {
 				t.Errorf("contentType of %q; got %q; want %q", o.Name, got, want)
 			}
 		}
 	}
 }

 func TestFunctions(t *testing.T) {
 	s := createService()
 	if s == nil {
 		t.Fatal("Could not create service")
 	}

 	t.Logf("Listing buckets for project %q", projectID)
 	var numBuckets int
 	pageToken := ""
 	for {
 		call := s.Buckets.List(projectID)
 		if pageToken != "" {
 			call.PageToken(pageToken)
 		}
 		resp, err := call.Do()
 		if err != nil {
 			t.Fatalf("unable to list buckets for project %q: %v", projectID, err)
 		}
 		numBuckets += len(resp.Items)
 		if pageToken = resp.NextPageToken; pageToken == "" {
 			break
 		}
 	}
 	if numBuckets == 0 {
 		t.Fatalf("no buckets found for project %q", projectID)
 	}

 	for _, obj := range objects {
 		t.Logf("Writing %q", obj.name)
 		// TODO(mcgreevy): stop relying on "resumable" name to determine whether to
 		// do a resumable upload.
 		err := writeObject(s, bucket, obj.name, obj.name == "resumable", obj.contents)
 		if err != nil {
 			t.Fatalf("unable to insert object %q: %v", obj.name, err)
 		}
 	}

 	for _, obj := range objects {
 		t.Logf("Reading %q", obj.name)
 		resp, err := s.Objects.Get(bucket, obj.name).Download()
 		if err != nil {
 			t.Fatalf("unable to get object %q: %v", obj.name, err)
 		}
 		slurp, err := ioutil.ReadAll(resp.Body)
 		if err != nil {
 			t.Fatalf("unable to read response body %q: %v", obj.name, err)
 		}
 		resp.Body.Close()
 		if got, want := string(slurp), obj.contents; got != want {
 			t.Errorf("contents of %q = %q; want %q", obj.name, got, want)
 		}
 	}

 	name := "obj-not-exists"
 	if _, err := s.Objects.Get(bucket, name).Download(); !isError(err, http.StatusNotFound) {
 		t.Errorf("object %q should not exist, err = %v", name, err)
 	} else {
 		t.Log("Successfully tested StatusNotFound.")
 	}

 	for _, obj := range objects {
 		t.Logf("Checking %q metadata", obj.name)
 		checkMetadata(t, s, bucket, obj.name)
 	}

 	name = objects[0].name

 	t.Logf("Rewriting %q to %q", name, copyObj)
 	copy, err := s.Objects.Rewrite(bucket, name, bucket, copyObj, nil).Do()
 	if err != nil {
 		t.Fatalf("unable to rewrite object %q to %q: %v", name, copyObj, err)
 	}
 	if copy.Resource.Name != copyObj {
 		t.Errorf("copy object's name = %q; want %q", copy.Resource.Name, copyObj)
 	}
 	if copy.Resource.Bucket != bucket {
 		t.Errorf("copy object's bucket = %q; want %q", copy.Resource.Bucket, bucket)
 	}

 	// Note that arrays such as ACLs below are completely overwritten using Patch
 	// semantics, so these must be updated in a read-modify-write sequence of operations.
 	// See https://cloud.google.com/storage/docs/json_api/v1/how-tos/performance#patch-semantics
 	// for more details.
 	t.Logf("Updating attributes of %q", name)
 	obj, err := s.Objects.Get(bucket, name).Projection("full").Fields("acl").Do()
 	if err != nil {
 		t.Fatalf("Objects.Get(%q, %q): %v", bucket, name, err)
 	}
 	if err := verifyAcls(obj, "", ""); err != nil {
 		t.Errorf("before update ACLs: %v", err)
 	}
 	obj.ContentType = "text/html"
 	for _, entity := range []string{"domain-google.com", "allUsers"} {
 		obj.Acl = append(obj.Acl, &storage.ObjectAccessControl{Entity: entity, Role: "READER"})
 	}
 	updated, err := s.Objects.Patch(bucket, name, obj).Projection("full").Fields("contentType", "acl").Do()
 	if err != nil {
 		t.Fatalf("Objects.Patch(%q, %q, %#v) failed with %v", bucket, name, obj, err)
 	}
 	if want := "text/html"; updated.ContentType != want {
 		t.Errorf("updated.ContentType == %q; want %q", updated.ContentType, want)
 	}
 	if err := verifyAcls(updated, "READER", "READER"); err != nil {
 		t.Errorf("after update ACLs: %v", err)
 	}

 	t.Log("Testing checksums")
 	checksumCases := []struct {
 		name     string
 		contents string
 		size     uint64
 		md5      string
 		crc32c   uint32
 	}{
 		{
 			name:     "checksum-object",
 			contents: "helloworld",
 			size:     10,
 			md5:      "fc5e038d38a57032085441e7fe7010b0",
 			crc32c:   1456190592,
 		},
 		{
 			name:     "zero-object",
 			contents: "",
 			size:     0,
 			md5:      "d41d8cd98f00b204e9800998ecf8427e",
 			crc32c:   0,
 		},
 	}
 	for _, c := range checksumCases {
 		f := strings.NewReader(c.contents)
 		o := &storage.Object{
 			Bucket:          bucket,
 			Name:            c.name,
 			ContentType:     defaultType,
 			ContentEncoding: "utf-8",
 			ContentLanguage: "en",
 		}
 		obj, err := s.Objects.Insert(bucket, o).Media(f).Do()
 		if err != nil {
 			t.Fatalf("unable to insert object %v: %v", obj, err)
 		}
 		if got, want := obj.Size, c.size; got != want {
 			t.Errorf("object %q size = %v; want %v", c.name, got, want)
 		}
 		md5, err := base64.StdEncoding.DecodeString(obj.Md5Hash)
 		if err != nil {
 			t.Fatalf("object %q base64 decode of MD5 %q: %v", c.name, obj.Md5Hash, err)
 		}
 		if got, want := fmt.Sprintf("%x", md5), c.md5; got != want {
 			t.Errorf("object %q MD5 = %q; want %q", c.name, got, want)
 		}
 		var crc32c uint32
 		d, err := base64.StdEncoding.DecodeString(obj.Crc32c)
 		if err != nil {
 			t.Errorf("object %q base64 decode of CRC32 %q: %v", c.name, obj.Crc32c, err)
 		}
 		if err == nil && len(d) == 4 {
 			crc32c = uint32(d[0])<<24 + uint32(d[1])<<16 + uint32(d[2])<<8 + uint32(d[3])
 		}
 		if got, want := crc32c, c.crc32c; got != want {
 			t.Errorf("object %q CRC32C = %v; want %v", c.name, got, want)
 		}
 	}
 }

 // cleanup destroys ALL objects in the bucket!
 func cleanup() error {
 	s := createService()
 	if s == nil {
 		return errors.New("Could not create service")
 	}

 	var pageToken string
 	var failed bool
 	for {
 		call := s.Objects.List(bucket)
 		if pageToken != "" {
 			call.PageToken(pageToken)
 		}
 		resp, err := call.Do()
 		if err != nil {
 			return fmt.Errorf("cleanup list failed: %v", err)
 		}
 		for _, obj := range resp.Items {
 			log.Printf("Cleanup deletion of %q", obj.Name)
 			if err := s.Objects.Delete(bucket, obj.Name).Do(); err != nil {
 				// Print the error out, but keep going.
 				log.Printf("Cleanup deletion of %q failed: %v", obj.Name, err)
 				failed = true
 			}
 			if _, err := s.Objects.Get(bucket, obj.Name).Download(); !isError(err, http.StatusNotFound) {
 				log.Printf("object %q should not exist, err = %v", obj.Name, err)
 				failed = true
 			} else {
 				log.Printf("Successfully deleted %q.", obj.Name)
 			}
 		}
 		if pageToken = resp.NextPageToken; pageToken == "" {
 			break
 		}
 	}
 	if failed {
 		return errors.New("Failed to delete at least one object")
 	}
 	return nil
 }

 func isError(err error, code int) bool {
 	if err == nil {
 		return false
 	}
 	ae, ok := err.(*googleapi.Error)
 	return ok && ae.Code == code
 }
	// Copyright 2017 Google LLC.
	// Use of this source code is governed by a BSD-style
	// license that can be found in the LICENSE file.

	// +build integration

	package storage

	import (
	"bytes"
	"context"
	"encoding/base64"
	"errors"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"os"
	"strings"
	"testing"

	"golang.org/x/oauth2"
	"golang.org/x/oauth2/google"
	"google.golang.org/api/googleapi"
	storage "google.golang.org/api/storage/v1"
	)

	type object struct {
	name, contents string
	}

	var (
	projectID string
	bucket string
	objects = []object{
	{"obj1", testContents},
	{"obj2", testContents},
	{"obj/with/slashes", testContents},
	{"resumable", testContents},
	{"large", strings.Repeat("a", 514)}, // larger than the first section of content that is sniffed by ContentSniffer.
	}
	aclObjects = []string{"acl1", "acl2"}
	copyObj = "copy-object"
	)

	const (
	envProject = "GCLOUD_TESTS_GOLANG_PROJECT_ID"
	envPrivateKey = "GCLOUD_TESTS_GOLANG_KEY"
	// NOTE that running this test on a bucket deletes ALL contents of the bucket!
	envBucket = "GCLOUD_TESTS_GOLANG_DESTRUCTIVE_TEST_BUCKET_NAME"
	testContents = "some text that will be saved to a bucket object"
	)

	func verifyAcls(obj *storage.Object, wantDomainRole, wantAllUsersRole string) (err error) {
	var gotDomainRole, gotAllUsersRole string
	for _, acl := range obj.Acl {
	if acl.Entity == "domain-google.com" {
	gotDomainRole = acl.Role
	}
	if acl.Entity == "allUsers" {
	gotAllUsersRole = acl.Role
	}
	}
	if gotDomainRole != wantDomainRole {
	err = fmt.Errorf("domain-google.com role = %q; want %q", gotDomainRole, wantDomainRole)
	}
	if gotAllUsersRole != wantAllUsersRole {
	err = fmt.Errorf("allUsers role = %q; want %q; %v", gotAllUsersRole, wantAllUsersRole, err)
	}
	return err
	}

	// TODO(gmlewis): Move this to a common location.
	func tokenSource(ctx context.Context, scopes ...string) (oauth2.TokenSource, error) {
	keyFile := os.Getenv(envPrivateKey)
	if keyFile == "" {
	return nil, errors.New(envPrivateKey + " not set")
	}
	jsonKey, err := ioutil.ReadFile(keyFile)
	if err != nil {
	return nil, fmt.Errorf("unable to read %q: %v", keyFile, err)
	}
	conf, err := google.JWTConfigFromJSON(jsonKey, scopes...)
	if err != nil {
	return nil, fmt.Errorf("google.JWTConfigFromJSON: %v", err)
	}
	return conf.TokenSource(ctx), nil
	}

	const defaultType = "text/plain; charset=utf-8"

	// writeObject writes some data and default metadata to the specified object.
	// Resumable upload is used if resumable is true.
	// The written data is returned.
	func writeObject(s *storage.Service, bucket, obj string, resumable bool, contents string) error {
	o := &storage.Object{
	Bucket: bucket,
	Name: obj,
	ContentType: defaultType,
	ContentEncoding: "utf-8",
	ContentLanguage: "en",
	Metadata: map[string]string{"foo": "bar"},
	}
	f := strings.NewReader(contents)
	insert := s.Objects.Insert(bucket, o)
	if resumable {
	insert.ResumableMedia(context.Background(), f, int64(len(contents)), defaultType)
	} else {
	insert.Media(f)
	}
	_, err := insert.Do()
	return err
	}

	func checkMetadata(t testing.T, s storage.Service, bucket, obj string) {
	o, err := s.Objects.Get(bucket, obj).Do()
	if err != nil {
	t.Error(err)
	}
	if got, want := o.Name, obj; got != want {
	t.Errorf("name of %q = %q; want %q", obj, got, want)
	}
	if got, want := o.ContentType, defaultType; got != want {
	t.Errorf("contentType of %q = %q; want %q", obj, got, want)
	}
	if got, want := o.Metadata["foo"], "bar"; got != want {
	t.Errorf("metadata entry foo of %q = %q; want %q", obj, got, want)
	}
	}

	func createService() *storage.Service {
	if projectID = os.Getenv(envProject); projectID == "" {
	log.Print("no project ID specified")
	return nil
	}
	if bucket = os.Getenv(envBucket); bucket == "" {
	log.Print("no bucket specified")
	return nil
	}

	ctx := context.Background()
	ts, err := tokenSource(ctx, storage.DevstorageFullControlScope)
	if err != nil {
	log.Printf("tokenSource: %v", err)
	return nil
	}
	client := oauth2.NewClient(ctx, ts)
	s, err := storage.New(client)
	if err != nil {
	log.Printf("unable to create service: %v", err)
	return nil
	}
	return s
	}

	func TestMain(m *testing.M) {
	if err := cleanup(); err != nil {
	log.Fatalf("Pre-test cleanup failed: %v", err)
	}
	exit := m.Run()
	if err := cleanup(); err != nil {
	log.Fatalf("Post-test cleanup failed: %v", err)
	}
	os.Exit(exit)
	}

	func TestContentType(t *testing.T) {
	s := createService()
	if s == nil {
	t.Fatal("Could not create service")
	}

	type testCase struct {
	objectContentType string
	useOptionContentType bool
	optionContentType string

	wantContentType string
	}

	// The Media method will use resumable upload if the supplied data is
	// larger than googleapi.DefaultUploadChunkSize We run the following
	// tests with two different file contents: one that will trigger
	// resumable upload, and one that won't.
	forceResumableData := bytes.Repeat([]byte("a"), googleapi.DefaultUploadChunkSize+1)
	smallData := bytes.Repeat([]byte("a"), 2)

	// In the following test, the content type, if any, in the Object struct is always "text/plain".
	// The content type configured via googleapi.ContentType, if any, is always "text/html".
	for _, tc := range []testCase{
	// With content type specified in the object struct
	// Temporarily disable this test during rollout of strict Content-Type.
	// TODO(djd): Re-enable once strict check is 100%.
	// {
	// objectContentType: "text/plain",
	// useOptionContentType: true,
	// optionContentType: "text/html",
	// wantContentType: "text/html",
	// },
	{
	objectContentType: "text/plain",
	useOptionContentType: true,
	optionContentType: "",
	wantContentType: "text/plain",
	},
	{
	objectContentType: "text/plain",
	useOptionContentType: false,
	wantContentType: "text/plain",
	},

	// Without content type specified in the object struct
	{
	useOptionContentType: true,
	optionContentType: "text/html",
	wantContentType: "text/html",
	},
	{
	useOptionContentType: true,
	optionContentType: "",
	wantContentType: "", // Result is an object without a content type.
	},
	{
	useOptionContentType: false,
	wantContentType: "text/plain; charset=utf-8", // sniffed.
	},
	} {
	// The behavior should be the same, regardless of whether resumable upload is used or not.
	for _, data := range [][]byte{smallData, forceResumableData} {
	o := &storage.Object{
	Bucket: bucket,
	Name: "test-content-type",
	ContentType: tc.objectContentType,
	}
	call := s.Objects.Insert(bucket, o)
	var opts []googleapi.MediaOption
	if tc.useOptionContentType {
	opts = append(opts, googleapi.ContentType(tc.optionContentType))
	}
	call.Media(bytes.NewReader(data), opts...)

	_, err := call.Do()
	if err != nil {
	t.Fatalf("unable to insert object %q: %v", o.Name, err)
	}

	readObj, err := s.Objects.Get(bucket, o.Name).Do()
	if err != nil {
	t.Error(err)
	}
	if got, want := readObj.ContentType, tc.wantContentType; got != want {
	t.Errorf("contentType of %q; got %q; want %q", o.Name, got, want)
	}
	}
	}
	}

	func TestFunctions(t *testing.T) {
	s := createService()
	if s == nil {
	t.Fatal("Could not create service")
	}

	t.Logf("Listing buckets for project %q", projectID)
	var numBuckets int
	pageToken := ""
	for {
	call := s.Buckets.List(projectID)
	if pageToken != "" {
	call.PageToken(pageToken)
	}
	resp, err := call.Do()
	if err != nil {
	t.Fatalf("unable to list buckets for project %q: %v", projectID, err)
	}
	numBuckets += len(resp.Items)
	if pageToken = resp.NextPageToken; pageToken == "" {
	break
	}
	}
	if numBuckets == 0 {
	t.Fatalf("no buckets found for project %q", projectID)
	}

	for _, obj := range objects {
	t.Logf("Writing %q", obj.name)
	// TODO(mcgreevy): stop relying on "resumable" name to determine whether to
	// do a resumable upload.
	err := writeObject(s, bucket, obj.name, obj.name == "resumable", obj.contents)
	if err != nil {
	t.Fatalf("unable to insert object %q: %v", obj.name, err)
	}
	}

	for _, obj := range objects {
	t.Logf("Reading %q", obj.name)
	resp, err := s.Objects.Get(bucket, obj.name).Download()
	if err != nil {
	t.Fatalf("unable to get object %q: %v", obj.name, err)
	}
	slurp, err := ioutil.ReadAll(resp.Body)
	if err != nil {
	t.Fatalf("unable to read response body %q: %v", obj.name, err)
	}
	resp.Body.Close()
	if got, want := string(slurp), obj.contents; got != want {
	t.Errorf("contents of %q = %q; want %q", obj.name, got, want)
	}
	}

	name := "obj-not-exists"
	if _, err := s.Objects.Get(bucket, name).Download(); !isError(err, http.StatusNotFound) {
	t.Errorf("object %q should not exist, err = %v", name, err)
	} else {
	t.Log("Successfully tested StatusNotFound.")
	}

	for _, obj := range objects {
	t.Logf("Checking %q metadata", obj.name)
	checkMetadata(t, s, bucket, obj.name)
	}

	name = objects[0].name

	t.Logf("Rewriting %q to %q", name, copyObj)
	copy, err := s.Objects.Rewrite(bucket, name, bucket, copyObj, nil).Do()
	if err != nil {
	t.Fatalf("unable to rewrite object %q to %q: %v", name, copyObj, err)
	}
	if copy.Resource.Name != copyObj {
	t.Errorf("copy object's name = %q; want %q", copy.Resource.Name, copyObj)
	}
	if copy.Resource.Bucket != bucket {
	t.Errorf("copy object's bucket = %q; want %q", copy.Resource.Bucket, bucket)
	}

	// Note that arrays such as ACLs below are completely overwritten using Patch
	// semantics, so these must be updated in a read-modify-write sequence of operations.
	// See https://cloud.google.com/storage/docs/json_api/v1/how-tos/performance#patch-semantics
	// for more details.
	t.Logf("Updating attributes of %q", name)
	obj, err := s.Objects.Get(bucket, name).Projection("full").Fields("acl").Do()
	if err != nil {
	t.Fatalf("Objects.Get(%q, %q): %v", bucket, name, err)
	}
	if err := verifyAcls(obj, "", ""); err != nil {
	t.Errorf("before update ACLs: %v", err)
	}
	obj.ContentType = "text/html"
	for _, entity := range []string{"domain-google.com", "allUsers"} {
	obj.Acl = append(obj.Acl, &storage.ObjectAccessControl{Entity: entity, Role: "READER"})
	}
	updated, err := s.Objects.Patch(bucket, name, obj).Projection("full").Fields("contentType", "acl").Do()
	if err != nil {
	t.Fatalf("Objects.Patch(%q, %q, %#v) failed with %v", bucket, name, obj, err)
	}
	if want := "text/html"; updated.ContentType != want {
	t.Errorf("updated.ContentType == %q; want %q", updated.ContentType, want)
	}
	if err := verifyAcls(updated, "READER", "READER"); err != nil {
	t.Errorf("after update ACLs: %v", err)
	}

	t.Log("Testing checksums")
	checksumCases := []struct {
	name string
	contents string
	size uint64
	md5 string
	crc32c uint32
	}{
	{
	name: "checksum-object",
	contents: "helloworld",
	size: 10,
	md5: "fc5e038d38a57032085441e7fe7010b0",
	crc32c: 1456190592,
	},
	{
	name: "zero-object",
	contents: "",
	size: 0,
	md5: "d41d8cd98f00b204e9800998ecf8427e",
	crc32c: 0,
	},
	}
	for _, c := range checksumCases {
	f := strings.NewReader(c.contents)
	o := &storage.Object{
	Bucket: bucket,
	Name: c.name,
	ContentType: defaultType,
	ContentEncoding: "utf-8",
	ContentLanguage: "en",
	}
	obj, err := s.Objects.Insert(bucket, o).Media(f).Do()
	if err != nil {
	t.Fatalf("unable to insert object %v: %v", obj, err)
	}
	if got, want := obj.Size, c.size; got != want {
	t.Errorf("object %q size = %v; want %v", c.name, got, want)
	}
	md5, err := base64.StdEncoding.DecodeString(obj.Md5Hash)
	if err != nil {
	t.Fatalf("object %q base64 decode of MD5 %q: %v", c.name, obj.Md5Hash, err)
	}
	if got, want := fmt.Sprintf("%x", md5), c.md5; got != want {
	t.Errorf("object %q MD5 = %q; want %q", c.name, got, want)
	}
	var crc32c uint32
	d, err := base64.StdEncoding.DecodeString(obj.Crc32c)
	if err != nil {
	t.Errorf("object %q base64 decode of CRC32 %q: %v", c.name, obj.Crc32c, err)
	}
	if err == nil && len(d) == 4 {
	crc32c = uint32(d[0])<<24 + uint32(d[1])<<16 + uint32(d[2])<<8 + uint32(d[3])
	}
	if got, want := crc32c, c.crc32c; got != want {
	t.Errorf("object %q CRC32C = %v; want %v", c.name, got, want)
	}
	}
	}

	// cleanup destroys ALL objects in the bucket!
	func cleanup() error {
	s := createService()
	if s == nil {
	return errors.New("Could not create service")
	}

	var pageToken string
	var failed bool
	for {
	call := s.Objects.List(bucket)
	if pageToken != "" {
	call.PageToken(pageToken)
	}
	resp, err := call.Do()
	if err != nil {
	return fmt.Errorf("cleanup list failed: %v", err)
	}
	for _, obj := range resp.Items {
	log.Printf("Cleanup deletion of %q", obj.Name)
	if err := s.Objects.Delete(bucket, obj.Name).Do(); err != nil {
	// Print the error out, but keep going.
	log.Printf("Cleanup deletion of %q failed: %v", obj.Name, err)
	failed = true
	}
	if _, err := s.Objects.Get(bucket, obj.Name).Download(); !isError(err, http.StatusNotFound) {
	log.Printf("object %q should not exist, err = %v", obj.Name, err)
	failed = true
	} else {
	log.Printf("Successfully deleted %q.", obj.Name)
	}
	}
	if pageToken = resp.NextPageToken; pageToken == "" {
	break
	}
	}
	if failed {
	return errors.New("Failed to delete at least one object")
	}
	return nil
	}

	func isError(err error, code int) bool {
	if err == nil {
	return false
	}
	ae, ok := err.(*googleapi.Error)
	return ok && ae.Code == code
	}