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| // Copyright 2018 The Go 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 syscall_test
|
| import (
| "syscall"
| "testing"
| )
|
| // testalias checks for aliasing of error strings returned by sys1 and sys2,
| // which both call the function named fn in package syscall
| func testalias(t *testing.T, fn string, sys1, sys2 func() error) {
| err := sys1().Error()
| errcopy := string([]byte(err))
| sys2()
| if err != errcopy {
| t.Errorf("syscall.%s error string changed from %q to %q\n", fn, errcopy, err)
| }
| }
|
| // issue 13770: errors cannot be nested in Plan 9
|
| func TestPlan9Syserr(t *testing.T) {
| testalias(t,
| "Syscall",
| func() error {
| return syscall.Mkdir("/", 0)
| },
| func() error {
| return syscall.Mkdir("#", 0)
| })
| testalias(t,
| "Syscall6",
| func() error {
| return syscall.Mount(0, 0, "", 0, "")
| },
| func() error {
| return syscall.Mount(-1, 0, "", 0, "")
| })
| // originally failed only on plan9_arm
| testalias(t,
| "seek",
| func() error {
| _, err := syscall.Seek(0, 0, -1)
| return err
| },
| func() error {
| _, err := syscall.Seek(-1, 0, 0)
| return err
| })
| }
|
|
