@@ -2,7 +2,6 @@ package plugins // import "github.com/docker/docker/pkg/plugins"

 import (

 	"bytes"

-	"context"

 	"encoding/json"

 	"io"

 	"net/http"

@@ -237,6 +236,10 @@ func TestClientSendFile(t *testing.T) {

 }

 func TestClientWithRequestTimeout(t *testing.T) {

+	type timeoutError interface {

+		Timeout() bool

+	}

+

 	timeout := 1 * time.Millisecond

 	testHandler := func(w http.ResponseWriter, r *http.Request) {

 		time.Sleep(timeout + 1*time.Millisecond)

@@ -251,12 +254,8 @@ func TestClientWithRequestTimeout(t *testing.T) {

 	assert.Assert(t, is.ErrorContains(err, ""), "expected error")

 	err = errors.Cause(err)

-

-	switch e := err.(type) {

-	case *url.Error:

-		err = e.Err

-	}

-	assert.DeepEqual(t, context.DeadlineExceeded, err)

+	assert.ErrorType(t, err, (*timeoutError)(nil))

+	assert.Equal(t, err.(timeoutError).Timeout(), true)

 }

 type testRequestWrapper struct {