LogDog: Add collector service implementation.

server/logdog/storage/bigtable/bigtable_test.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package bigtable
 
 import (
-        "fmt"
         "testing"
 
         "github.com/luci/luci-go/common/errors"
+        "github.com/luci/luci-go/common/grpcutil"
         . "github.com/smartystreets/goconvey/convey"
 )
 
 func TestBigTable(t *testing.T) {
         t.Parallel()
 
         Convey(`A nil error is not marked transient.`, t, func() {
                 So(wrapTransient(nil), ShouldBeNil)
         })
 
         Convey(`A regular error is not marked transient.`, t, func() {
-                So(errors.IsTransient(wrapTransient(fmt.Errorf("boring error"))), ShouldBeFalse)
+                So(grpcutil.IsTransient(grpcutil.Canceled), ShouldBeFalse)
+                So(errors.IsTransient(wrapTransient(grpcutil.Canceled)), ShouldBeFalse)
         })
 
-        Convey(`An error containing "Internal error encountered" is marked transient.`, t, func() {
-                So(errors.IsTransient(wrapTransient(fmt.Errorf("Hey, Internal error encountered!"))), ShouldBeTrue)
+        Convey(`An gRPC transient error is marked transient.`, t, func() {
+                So(grpcutil.IsTransient(grpcutil.Internal), ShouldBeTrue)
+                So(errors.IsTransient(wrapTransient(grpcutil.Internal)), ShouldBeTrue)
         })
 }