mirror of
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217 lines
5.3 KiB
Go
217 lines
5.3 KiB
Go
// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package lro supports Long Running Operations for the Google Cloud Libraries.
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//
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// This package is still experimental and subject to change.
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package longrunning
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import (
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"errors"
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"testing"
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"time"
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"github.com/golang/protobuf/proto"
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"github.com/golang/protobuf/ptypes"
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"github.com/golang/protobuf/ptypes/duration"
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"github.com/golang/protobuf/ptypes/empty"
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gax "github.com/googleapis/gax-go"
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"golang.org/x/net/context"
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pb "google.golang.org/genproto/googleapis/longrunning"
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status "google.golang.org/genproto/googleapis/rpc/status"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
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)
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type getterService struct {
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pb.OperationsClient
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// clock represents the fake current time of the service.
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// It is the running sum of the of the duration we have slept.
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clock time.Duration
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// getTimes records the the times at which GetOperation is called.
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getTimes []time.Duration
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// results are the fake results that GetOperation should return.
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results []*pb.Operation
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}
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func (s *getterService) GetOperation(context.Context, *pb.GetOperationRequest, ...grpc.CallOption) (*pb.Operation, error) {
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i := len(s.getTimes)
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s.getTimes = append(s.getTimes, s.clock)
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if i >= len(s.results) {
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return nil, errors.New("unexpected call")
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}
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return s.results[i], nil
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}
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func (s *getterService) sleeper() sleeper {
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return func(_ context.Context, d time.Duration) error {
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s.clock += d
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return nil
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}
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}
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func TestWait(t *testing.T) {
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responseDur := ptypes.DurationProto(42 * time.Second)
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responseAny, err := ptypes.MarshalAny(responseDur)
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if err != nil {
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t.Fatal(err)
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}
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s := &getterService{
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results: []*pb.Operation{
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{Name: "foo"},
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{Name: "foo"},
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{Name: "foo"},
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{Name: "foo"},
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{Name: "foo"},
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{
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Name: "foo",
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Done: true,
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Result: &pb.Operation_Response{
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Response: responseAny,
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},
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},
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},
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}
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op := &Operation{
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c: s,
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proto: &pb.Operation{Name: "foo"},
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}
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if op.Done() {
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t.Fatal("operation should not have completed yet")
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}
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var resp duration.Duration
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bo := gax.Backoff{
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Initial: 1 * time.Second,
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Max: 3 * time.Second,
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}
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if err := op.wait(context.Background(), &resp, &bo, s.sleeper()); err != nil {
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t.Fatal(err)
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}
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if !proto.Equal(&resp, responseDur) {
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t.Errorf("response, got %v, want %v", resp, responseDur)
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}
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if !op.Done() {
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t.Errorf("operation should have completed")
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}
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maxWait := []time.Duration{
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1 * time.Second,
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2 * time.Second,
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3 * time.Second,
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3 * time.Second,
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3 * time.Second,
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}
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for i := 0; i < len(s.getTimes)-1; i++ {
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w := s.getTimes[i+1] - s.getTimes[i]
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if mw := maxWait[i]; w > mw {
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t.Errorf("backoff, waited %s, max %s", w, mw)
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}
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}
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}
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func TestPollRequestError(t *testing.T) {
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const opName = "foo"
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// All calls error.
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s := &getterService{}
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op := &Operation{
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c: s,
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proto: &pb.Operation{Name: opName},
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}
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if err := op.Poll(context.Background(), nil); err == nil {
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t.Fatalf("Poll should error")
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}
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if n := op.Name(); n != opName {
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t.Errorf("operation name, got %q, want %q", n, opName)
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}
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if op.Done() {
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t.Errorf("operation should not have completed; we failed to fetch state")
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}
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}
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func TestPollErrorResult(t *testing.T) {
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const (
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errCode = codes.NotFound
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errMsg = "my error"
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)
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op := &Operation{
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proto: &pb.Operation{
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Name: "foo",
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Done: true,
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Result: &pb.Operation_Error{
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Error: &status.Status{
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Code: int32(errCode),
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Message: errMsg,
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},
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},
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},
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}
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err := op.Poll(context.Background(), nil)
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if got := grpc.Code(err); got != errCode {
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t.Errorf("error code, want %s, got %s", errCode, got)
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}
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if got := grpc.ErrorDesc(err); got != errMsg {
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t.Errorf("error code, want %s, got %s", errMsg, got)
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}
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if !op.Done() {
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t.Errorf("operation should have completed")
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}
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}
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type errService struct {
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pb.OperationsClient
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errCancel, errDelete error
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}
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func (s *errService) CancelOperation(context.Context, *pb.CancelOperationRequest, ...grpc.CallOption) (*empty.Empty, error) {
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return nil, s.errCancel
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}
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func (s *errService) DeleteOperation(context.Context, *pb.DeleteOperationRequest, ...grpc.CallOption) (*empty.Empty, error) {
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return nil, s.errDelete
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}
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func TestCancelReturnsError(t *testing.T) {
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s := &errService{
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errCancel: errors.New("cancel error"),
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}
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op := &Operation{
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c: s,
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proto: &pb.Operation{Name: "foo"},
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}
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if got, want := op.Cancel(context.Background()), s.errCancel; got != want {
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t.Errorf("cancel, got error %s, want %s", got, want)
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}
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}
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func TestDeleteReturnsError(t *testing.T) {
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s := &errService{
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errDelete: errors.New("delete error"),
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}
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op := &Operation{
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c: s,
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proto: &pb.Operation{Name: "foo"},
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}
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if got, want := op.Delete(context.Background()), s.errDelete; got != want {
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t.Errorf("cancel, got error %s, want %s", got, want)
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}
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}
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