hdx/vendor/cloud.google.com/go/firestore/mock_test.go
Derek McQuay 59af8fc84f
initial commit
Signed-off-by: Derek McQuay <derekmcquay@gmail.com>
2018-04-10 19:17:26 -07:00

208 lines
5.4 KiB
Go

// Copyright 2017 Google Inc. All Rights Reserved.
//
// 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
//
// http://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 firestore
// A simple mock server.
import (
"fmt"
"strings"
"cloud.google.com/go/internal/testutil"
pb "google.golang.org/genproto/googleapis/firestore/v1beta1"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"github.com/golang/protobuf/proto"
"github.com/golang/protobuf/ptypes/empty"
"golang.org/x/net/context"
)
type mockServer struct {
pb.FirestoreServer
Addr string
reqItems []reqItem
resps []interface{}
}
type reqItem struct {
wantReq proto.Message
adjust func(gotReq proto.Message)
}
func newMockServer() (*mockServer, error) {
srv, err := testutil.NewServer()
if err != nil {
return nil, err
}
mock := &mockServer{Addr: srv.Addr}
pb.RegisterFirestoreServer(srv.Gsrv, mock)
srv.Start()
return mock, nil
}
// addRPC adds a (request, response) pair to the server's list of expected
// interactions. The server will compare the incoming request with wantReq
// using proto.Equal. The response can be a message or an error.
//
// For the Listen RPC, resp should be a []interface{}, where each element
// is either ListenResponse or an error.
//
// Passing nil for wantReq disables the request check.
func (s *mockServer) addRPC(wantReq proto.Message, resp interface{}) {
s.addRPCAdjust(wantReq, resp, nil)
}
// addRPCAdjust is like addRPC, but accepts a function that can be used
// to tweak the requests before comparison, for example to adjust for
// randomness.
func (s *mockServer) addRPCAdjust(wantReq proto.Message, resp interface{}, adjust func(proto.Message)) {
s.reqItems = append(s.reqItems, reqItem{wantReq, adjust})
s.resps = append(s.resps, resp)
}
// popRPC compares the request with the next expected (request, response) pair.
// It returns the response, or an error if the request doesn't match what
// was expected or there are no expected rpcs.
func (s *mockServer) popRPC(gotReq proto.Message) (interface{}, error) {
if len(s.reqItems) == 0 {
panic("out of RPCs")
}
ri := s.reqItems[0]
s.reqItems = s.reqItems[1:]
if ri.wantReq != nil {
if ri.adjust != nil {
ri.adjust(gotReq)
}
if !proto.Equal(gotReq, ri.wantReq) {
return nil, fmt.Errorf("mockServer: bad request\ngot: %T\n%s\nwant: %T\n%s",
gotReq, proto.MarshalTextString(gotReq),
ri.wantReq, proto.MarshalTextString(ri.wantReq))
}
}
resp := s.resps[0]
s.resps = s.resps[1:]
if err, ok := resp.(error); ok {
return nil, err
}
return resp, nil
}
func (s *mockServer) reset() {
s.reqItems = nil
s.resps = nil
}
func (s *mockServer) GetDocument(_ context.Context, req *pb.GetDocumentRequest) (*pb.Document, error) {
res, err := s.popRPC(req)
if err != nil {
return nil, err
}
return res.(*pb.Document), nil
}
func (s *mockServer) Commit(_ context.Context, req *pb.CommitRequest) (*pb.CommitResponse, error) {
res, err := s.popRPC(req)
if err != nil {
return nil, err
}
return res.(*pb.CommitResponse), nil
}
func (s *mockServer) BatchGetDocuments(req *pb.BatchGetDocumentsRequest, bs pb.Firestore_BatchGetDocumentsServer) error {
res, err := s.popRPC(req)
if err != nil {
return err
}
responses := res.([]interface{})
for _, res := range responses {
switch res := res.(type) {
case *pb.BatchGetDocumentsResponse:
if err := bs.Send(res); err != nil {
return err
}
case error:
return res
default:
panic(fmt.Sprintf("bad response type in BatchGetDocuments: %+v", res))
}
}
return nil
}
func (s *mockServer) RunQuery(req *pb.RunQueryRequest, qs pb.Firestore_RunQueryServer) error {
res, err := s.popRPC(req)
if err != nil {
return err
}
responses := res.([]interface{})
for _, res := range responses {
switch res := res.(type) {
case *pb.RunQueryResponse:
if err := qs.Send(res); err != nil {
return err
}
case error:
return res
default:
panic(fmt.Sprintf("bad response type in RunQuery: %+v", res))
}
}
return nil
}
func (s *mockServer) BeginTransaction(_ context.Context, req *pb.BeginTransactionRequest) (*pb.BeginTransactionResponse, error) {
res, err := s.popRPC(req)
if err != nil {
return nil, err
}
return res.(*pb.BeginTransactionResponse), nil
}
func (s *mockServer) Rollback(_ context.Context, req *pb.RollbackRequest) (*empty.Empty, error) {
res, err := s.popRPC(req)
if err != nil {
return nil, err
}
return res.(*empty.Empty), nil
}
func (s *mockServer) Listen(stream pb.Firestore_ListenServer) error {
req, err := stream.Recv()
if err != nil {
return err
}
responses, err := s.popRPC(req)
if err != nil {
if status.Code(err) == codes.Unknown && strings.Contains(err.Error(), "mockServer") {
// The stream will retry on Unknown, but we don't want that to happen if
// the error comes from us.
panic(err)
}
return err
}
for _, res := range responses.([]interface{}) {
if err, ok := res.(error); ok {
return err
}
if err := stream.Send(res.(*pb.ListenResponse)); err != nil {
return err
}
}
return nil
}