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hmac_test.go
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hmac_test.go
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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package hmac
import (
"context"
"errors"
"fmt"
"io"
"io/ioutil"
"os"
"testing"
"time"
"cloud.google.com/go/storage"
"github.com/GoogleCloudPlatform/golang-samples/internal/testutil"
"google.golang.org/api/googleapi"
"google.golang.org/api/iterator"
)
var serviceAccountEmail = os.Getenv("GOLANG_SAMPLES_SERVICE_ACCOUNT_EMAIL")
var storageClient *storage.Client
func TestMain(m *testing.M) {
if serviceAccountEmail == "" {
fmt.Fprintln(os.Stderr, "GOLANG_SAMPLES_SERVICE_ACCOUNT_EMAIL not set. Skipping.")
return
}
ctx := context.Background()
storageClient, _ = storage.NewClient(ctx)
defer storageClient.Close()
// Delete all existing HMAC keys in the project to avoid running into
// resource constraints during the test.
projectID := os.Getenv("GOLANG_SAMPLES_PROJECT_ID")
if err := deleteAllKeys(projectID); err != nil {
fmt.Printf("deleting existing keys: %v", err)
}
os.Exit(m.Run())
}
func TestListKeys(t *testing.T) {
tc := testutil.SystemTest(t)
key, err := createTestKey(tc.ProjectID, t)
defer deleteTestKey(key)
if err != nil {
t.Fatalf("Error in key creation: %s", err)
}
testutil.Retry(t, 10, 10*time.Second, func(r *testutil.R) {
keys, err := listHMACKeys(ioutil.Discard, tc.ProjectID)
if err != nil {
r.Errorf("listHMACKeys raised error: %s", err)
}
if len(keys) < 1 {
r.Errorf("Should have at least one key listed.")
}
})
}
func TestCreateKey(t *testing.T) {
tc := testutil.SystemTest(t)
key, err := createHMACKey(ioutil.Discard, tc.ProjectID, serviceAccountEmail)
defer deleteTestKey(key)
if err != nil {
t.Fatalf("createHMACKey raised error: %s", err)
}
if key == nil {
t.Fatalf("Returned nil key.")
}
if key.State != "ACTIVE" {
t.Errorf("State of key is %s, should be ACTIVE", key.State)
}
}
func TestActivateKey(t *testing.T) {
tc := testutil.SystemTest(t)
key, err := createTestKey(tc.ProjectID, t)
defer deleteTestKey(key)
if err != nil {
t.Fatalf("Error in key creation: %s", err)
}
// Key must first be deactivated in order to update to active state.
ctx := context.Background()
handle := storageClient.HMACKeyHandle(key.ProjectID, key.AccessID)
handle.Update(ctx, storage.HMACKeyAttrsToUpdate{State: "INACTIVE"})
key, err = activateHMACKey(ioutil.Discard, key.AccessID, key.ProjectID)
if err != nil {
t.Fatalf("Error in activateHMACKey: %s", err)
}
if key.State != "ACTIVE" {
t.Errorf("State of key is %s, should be ACTIVE", key.State)
}
}
func TestDeactivateKey(t *testing.T) {
tc := testutil.SystemTest(t)
key, err := createTestKey(tc.ProjectID, t)
defer deleteTestKey(key)
if err != nil {
t.Fatalf("Error in key creation: %s", err)
}
key, err = deactivateHMACKey(ioutil.Discard, key.AccessID, key.ProjectID)
if err != nil {
t.Fatalf("Error in deactivateHMACKey: %s", err)
}
if key.State != "INACTIVE" {
t.Errorf("State of key is %s, should be INACTIVE", key.State)
}
}
func TestGetKey(t *testing.T) {
tc := testutil.SystemTest(t)
key, err := createTestKey(tc.ProjectID, t)
defer deleteTestKey(key)
if err != nil {
t.Fatalf("Error in key creation: %s", err)
}
testutil.Retry(t, 10, 10*time.Second, func(r *testutil.R) {
gotKey, err := getHMACKey(ioutil.Discard, key.AccessID, key.ProjectID)
if err != nil {
r.Errorf("Error in getHMACKey: %s", err)
return
}
if gotKey == nil {
r.Errorf("Returned nil key.")
}
})
}
func TestDeleteKey(t *testing.T) {
tc := testutil.SystemTest(t)
key, err := createTestKey(tc.ProjectID, t)
defer deleteTestKey(key)
if err != nil {
t.Fatalf("Error in key creation: %s", err)
}
// Keys must be in INACTIVE state before deletion.
ctx := context.Background()
handle := storageClient.HMACKeyHandle(key.ProjectID, key.AccessID)
_, err = handle.Update(ctx, storage.HMACKeyAttrsToUpdate{State: "INACTIVE"})
if err != nil {
t.Errorf("Error updating HMAC key: %s", err)
}
// Retry as HMAC key updates can take up to 3 minutes to propagate.
testutil.Retry(t, 18, 10*time.Second, func(r *testutil.R) {
err = deleteHMACKey(io.Discard, key.AccessID, key.ProjectID)
if err != nil {
// 400 error with reason "invalid" means the key was already deleted;
// this can happen if there was a previous call that returned an error
// but succeeded on the server side.
var ge *googleapi.Error
if errors.As(err, &ge) {
if ge.Code == 400 && len(ge.Errors) > 0 && ge.Errors[0].Reason == "invalid" {
return
}
}
r.Errorf("Error in deleteHMACKey: %s", err)
}
key, _ = handle.Get(ctx)
if key != nil && key.State != "DELETED" {
r.Errorf("State of key is %s, should be DELETED", key.State)
}
})
}
// Delete all HMAC keys in the project.
func deleteAllKeys(projectID string) error {
iter := storageClient.ListHMACKeys(context.Background(), projectID)
for {
key, err := iter.Next()
if err == iterator.Done {
break
}
if err != nil {
return fmt.Errorf("ListHMACKeys: %w", err)
}
deleteTestKey(key)
}
return nil
}
// Create a key for testing purposes.
func createTestKey(projectID string, t *testing.T) (*storage.HMACKey, error) {
ctx := context.Background()
var key *storage.HMACKey
var err error
testutil.Retry(t, 10, 10*time.Second, func(r *testutil.R) {
key, err = storageClient.CreateHMACKey(ctx, projectID, serviceAccountEmail)
if err != nil {
r.Errorf("Error in CreateHMACKey: %v", err)
return
}
// Nil key check should not happen but is added to handle flaky
// "nil pointer dereference" error.
if key == nil {
r.Errorf("CreateHMACKey returned nil key.")
err = errors.New("CreateHMACKey returned nil key")
return
}
})
return key, err
}
// Deactivate and delete the given key. Should operate as a teardown method.
func deleteTestKey(key *storage.HMACKey) {
if key == nil {
return
}
ctx := context.Background()
handle := storageClient.HMACKeyHandle(key.ProjectID, key.AccessID)
if key.State == "ACTIVE" {
handle.Update(ctx, storage.HMACKeyAttrsToUpdate{State: "INACTIVE"})
}
if key.State != "DELETED" {
handle.Delete(ctx)
}
}