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// 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
import (
"testing"
"golang.org/x/net/context"
"google.golang.org/grpc/status"
pb "google.golang.org/genproto/googleapis/firestore/v1beta1"
"github.com/golang/protobuf/ptypes/empty"
"google.golang.org/api/iterator"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
)
func TestRunTransaction(t *testing.T) {
ctx := context.Background()
const db = "projects/projectID/databases/(default)"
tid := []byte{1}
c, srv := newMock(t)
beginReq := &pb.BeginTransactionRequest{Database: db}
beginRes := &pb.BeginTransactionResponse{Transaction: tid}
commitReq := &pb.CommitRequest{Database: db, Transaction: tid}
// Empty transaction.
srv.addRPC(beginReq, beginRes)
srv.addRPC(commitReq, &pb.CommitResponse{CommitTime: aTimestamp})
err := c.RunTransaction(ctx, func(context.Context, *Transaction) error { return nil })
if err != nil {
t.Fatal(err)
}
// Transaction with read and write.
srv.reset()
srv.addRPC(beginReq, beginRes)
aDoc := &pb.Document{
Name: db + "/documents/C/a",
CreateTime: aTimestamp,
UpdateTime: aTimestamp2,
Fields: map[string]*pb.Value{"count": intval(1)},
}
srv.addRPC(
&pb.BatchGetDocumentsRequest{
Database: c.path(),
Documents: []string{db + "/documents/C/a"},
ConsistencySelector: &pb.BatchGetDocumentsRequest_Transaction{tid},
}, []interface{}{
&pb.BatchGetDocumentsResponse{
Result: &pb.BatchGetDocumentsResponse_Found{aDoc},
ReadTime: aTimestamp2,
},
})
aDoc2 := &pb.Document{
Name: aDoc.Name,
Fields: map[string]*pb.Value{"count": intval(2)},
}
srv.addRPC(
&pb.CommitRequest{
Database: db,
Transaction: tid,
Writes: []*pb.Write{{
Operation: &pb.Write_Update{aDoc2},
UpdateMask: &pb.DocumentMask{FieldPaths: []string{"count"}},
CurrentDocument: &pb.Precondition{
ConditionType: &pb.Precondition_Exists{true},
},
}},
},
&pb.CommitResponse{CommitTime: aTimestamp3},
)
err = c.RunTransaction(ctx, func(_ context.Context, tx *Transaction) error {
docref := c.Collection("C").Doc("a")
doc, err := tx.Get(docref)
if err != nil {
return err
}
count, err := doc.DataAt("count")
if err != nil {
return err
}
tx.Update(docref, []Update{{Path: "count", Value: count.(int64) + 1}})
return nil
})
if err != nil {
t.Fatal(err)
}
// Query
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(
&pb.RunQueryRequest{
Parent: db,
QueryType: &pb.RunQueryRequest_StructuredQuery{
&pb.StructuredQuery{
From: []*pb.StructuredQuery_CollectionSelector{{CollectionId: "C"}},
},
},
ConsistencySelector: &pb.RunQueryRequest_Transaction{tid},
},
[]interface{}{},
)
srv.addRPC(commitReq, &pb.CommitResponse{CommitTime: aTimestamp3})
err = c.RunTransaction(ctx, func(_ context.Context, tx *Transaction) error {
it := tx.Documents(c.Collection("C"))
defer it.Stop()
_, err := it.Next()
if err != iterator.Done {
return err
}
return nil
})
if err != nil {
t.Fatal(err)
}
// Retry entire transaction.
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(commitReq, status.Errorf(codes.Aborted, ""))
srv.addRPC(
&pb.BeginTransactionRequest{
Database: db,
Options: &pb.TransactionOptions{
Mode: &pb.TransactionOptions_ReadWrite_{
&pb.TransactionOptions_ReadWrite{tid},
},
},
},
beginRes,
)
srv.addRPC(commitReq, &pb.CommitResponse{CommitTime: aTimestamp})
err = c.RunTransaction(ctx, func(_ context.Context, tx *Transaction) error { return nil })
if err != nil {
t.Fatal(err)
}
}
func TestTransactionErrors(t *testing.T) {
ctx := context.Background()
const db = "projects/projectID/databases/(default)"
c, srv := newMock(t)
var (
tid = []byte{1}
internalErr = status.Errorf(codes.Internal, "so sad")
beginReq = &pb.BeginTransactionRequest{
Database: db,
}
beginRes = &pb.BeginTransactionResponse{Transaction: tid}
getReq = &pb.BatchGetDocumentsRequest{
Database: c.path(),
Documents: []string{db + "/documents/C/a"},
ConsistencySelector: &pb.BatchGetDocumentsRequest_Transaction{tid},
}
rollbackReq = &pb.RollbackRequest{Database: db, Transaction: tid}
commitReq = &pb.CommitRequest{Database: db, Transaction: tid}
)
// BeginTransaction has a permanent error.
srv.addRPC(beginReq, internalErr)
err := c.RunTransaction(ctx, func(context.Context, *Transaction) error { return nil })
if grpc.Code(err) != codes.Internal {
t.Errorf("got <%v>, want Internal", err)
}
// Get has a permanent error.
get := func(_ context.Context, tx *Transaction) error {
_, err := tx.Get(c.Doc("C/a"))
return err
}
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(getReq, internalErr)
srv.addRPC(rollbackReq, &empty.Empty{})
err = c.RunTransaction(ctx, get)
if grpc.Code(err) != codes.Internal {
t.Errorf("got <%v>, want Internal", err)
}
// Get has a permanent error, but the rollback fails. We still
// return Get's error.
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(getReq, internalErr)
srv.addRPC(rollbackReq, status.Errorf(codes.FailedPrecondition, ""))
err = c.RunTransaction(ctx, get)
if grpc.Code(err) != codes.Internal {
t.Errorf("got <%v>, want Internal", err)
}
// Commit has a permanent error.
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(getReq, []interface{}{
&pb.BatchGetDocumentsResponse{
Result: &pb.BatchGetDocumentsResponse_Found{&pb.Document{
Name: "projects/projectID/databases/(default)/documents/C/a",
CreateTime: aTimestamp,
UpdateTime: aTimestamp2,
}},
ReadTime: aTimestamp2,
},
})
srv.addRPC(commitReq, internalErr)
err = c.RunTransaction(ctx, get)
if grpc.Code(err) != codes.Internal {
t.Errorf("got <%v>, want Internal", err)
}
// Read after write.
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(rollbackReq, &empty.Empty{})
err = c.RunTransaction(ctx, func(_ context.Context, tx *Transaction) error {
tx.Delete(c.Doc("C/a"))
if _, err := tx.Get(c.Doc("C/a")); err != nil {
return err
}
return nil
})
if err != errReadAfterWrite {
t.Errorf("got <%v>, want <%v>", err, errReadAfterWrite)
}
// Read after write, with query.
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(rollbackReq, &empty.Empty{})
err = c.RunTransaction(ctx, func(_ context.Context, tx *Transaction) error {
tx.Delete(c.Doc("C/a"))
it := tx.Documents(c.Collection("C").Select("x"))
defer it.Stop()
if _, err := it.Next(); err != iterator.Done {
return err
}
return nil
})
if err != errReadAfterWrite {
t.Errorf("got <%v>, want <%v>", err, errReadAfterWrite)
}
// Read after write fails even if the user ignores the read's error.
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(rollbackReq, &empty.Empty{})
err = c.RunTransaction(ctx, func(_ context.Context, tx *Transaction) error {
tx.Delete(c.Doc("C/a"))
tx.Get(c.Doc("C/a"))
return nil
})
if err != errReadAfterWrite {
t.Errorf("got <%v>, want <%v>", err, errReadAfterWrite)
}
// Write in read-only transaction.
srv.reset()
srv.addRPC(
&pb.BeginTransactionRequest{
Database: db,
Options: &pb.TransactionOptions{
Mode: &pb.TransactionOptions_ReadOnly_{&pb.TransactionOptions_ReadOnly{}},
},
},
beginRes,
)
srv.addRPC(rollbackReq, &empty.Empty{})
err = c.RunTransaction(ctx, func(_ context.Context, tx *Transaction) error {
return tx.Delete(c.Doc("C/a"))
}, ReadOnly)
if err != errWriteReadOnly {
t.Errorf("got <%v>, want <%v>", err, errWriteReadOnly)
}
// Too many retries.
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(commitReq, status.Errorf(codes.Aborted, ""))
srv.addRPC(
&pb.BeginTransactionRequest{
Database: db,
Options: &pb.TransactionOptions{
Mode: &pb.TransactionOptions_ReadWrite_{
&pb.TransactionOptions_ReadWrite{tid},
},
},
},
beginRes,
)
srv.addRPC(commitReq, status.Errorf(codes.Aborted, ""))
srv.addRPC(rollbackReq, &empty.Empty{})
err = c.RunTransaction(ctx, func(context.Context, *Transaction) error { return nil },
MaxAttempts(2))
if grpc.Code(err) != codes.Aborted {
t.Errorf("got <%v>, want Aborted", err)
}
// Nested transaction.
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(rollbackReq, &empty.Empty{})
err = c.RunTransaction(ctx, func(ctx context.Context, tx *Transaction) error {
return c.RunTransaction(ctx, func(context.Context, *Transaction) error { return nil })
})
if got, want := err, errNestedTransaction; got != want {
t.Errorf("got <%v>, want <%v>", got, want)
}
// Non-transactional operation.
dr := c.Doc("C/d")
for i, op := range []func(ctx context.Context) error{
func(ctx context.Context) error { _, err := c.GetAll(ctx, []*DocumentRef{dr}); return err },
func(ctx context.Context) error { _, _, err := c.Collection("C").Add(ctx, testData); return err },
func(ctx context.Context) error { _, err := dr.Get(ctx); return err },
func(ctx context.Context) error { _, err := dr.Create(ctx, testData); return err },
func(ctx context.Context) error { _, err := dr.Set(ctx, testData); return err },
func(ctx context.Context) error { _, err := dr.Delete(ctx); return err },
func(ctx context.Context) error {
_, err := dr.Update(ctx, []Update{{FieldPath: []string{"*"}, Value: 1}})
return err
},
func(ctx context.Context) error { it := c.Collections(ctx); _, err := it.Next(); return err },
func(ctx context.Context) error { it := dr.Collections(ctx); _, err := it.Next(); return err },
func(ctx context.Context) error {
_, err := c.Batch().Set(dr, testData).Commit(ctx)
return err
},
func(ctx context.Context) error {
it := c.Collection("C").Documents(ctx)
defer it.Stop()
_, err := it.Next()
return err
},
} {
srv.reset()
srv.addRPC(beginReq, beginRes)
srv.addRPC(rollbackReq, &empty.Empty{})
err = c.RunTransaction(ctx, func(ctx context.Context, _ *Transaction) error {
return op(ctx)
})
if got, want := err, errNonTransactionalOp; got != want {
t.Errorf("#%d: got <%v>, want <%v>", i, got, want)
}
}
}
func TestTransactionGetAll(t *testing.T) {
c, srv := newMock(t)
defer c.Close()
const dbPath = "projects/projectID/databases/(default)"
tid := []byte{1}
beginReq := &pb.BeginTransactionRequest{Database: dbPath}
beginRes := &pb.BeginTransactionResponse{Transaction: tid}
srv.addRPC(beginReq, beginRes)
req := &pb.BatchGetDocumentsRequest{
Database: dbPath,
Documents: []string{
dbPath + "/documents/C/a",
dbPath + "/documents/C/b",
dbPath + "/documents/C/c",
},
ConsistencySelector: &pb.BatchGetDocumentsRequest_Transaction{tid},
}
err := c.RunTransaction(context.Background(), func(_ context.Context, tx *Transaction) error {
testGetAll(t, c, srv, dbPath,
func(drs []*DocumentRef) ([]*DocumentSnapshot, error) { return tx.GetAll(drs) },
req)
commitReq := &pb.CommitRequest{Database: dbPath, Transaction: tid}
srv.addRPC(commitReq, &pb.CommitResponse{CommitTime: aTimestamp})
return nil
})
if err != nil {
t.Fatal(err)
}
}