X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/5d56a1af42f64df57ef7a1bcef6d016ff2310900..d6446b03e2f5d5079a870bdd7b963456dc12b485:/sdk/go/arvados/fs_backend.go

diff --git a/sdk/go/arvados/fs_backend.go b/sdk/go/arvados/fs_backend.go
index 32365a5317..cc4c32ffe9 100644
--- a/sdk/go/arvados/fs_backend.go
+++ b/sdk/go/arvados/fs_backend.go
@@ -6,6 +6,7 @@ package arvados
 
 import (
 	"context"
+	"errors"
 	"io"
 )
 
@@ -30,3 +31,16 @@ type keepClient interface {
 type apiClient interface {
 	RequestAndDecode(dst interface{}, method, path string, body io.Reader, params interface{}) error
 }
+
+var errStubClient = errors.New("stub client")
+
+type StubClient struct{}
+
+func (*StubClient) ReadAt(string, []byte, int) (int, error) { return 0, errStubClient }
+func (*StubClient) LocalLocator(loc string) (string, error) { return loc, nil }
+func (*StubClient) BlockWrite(context.Context, BlockWriteOptions) (BlockWriteResponse, error) {
+	return BlockWriteResponse{}, errStubClient
+}
+func (*StubClient) RequestAndDecode(_ interface{}, _, _ string, _ io.Reader, _ interface{}) error {
+	return errStubClient
+}