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// Copyright 2018 The gVisor Authors.
//
// 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 syserror_test
import (
"errors"
"syscall"
"testing"
"gvisor.googlesource.com/gvisor/pkg/syserror"
)
var globalError error
func returnErrnoAsError() error {
return syscall.EINVAL
}
func returnError() error {
return syserror.EINVAL
}
func BenchmarkReturnErrnoAsError(b *testing.B) {
for i := b.N; i > 0; i-- {
returnErrnoAsError()
}
}
func BenchmarkReturnError(b *testing.B) {
for i := b.N; i > 0; i-- {
returnError()
}
}
func BenchmarkCompareErrno(b *testing.B) {
j := 0
for i := b.N; i > 0; i-- {
if globalError == syscall.EINVAL {
j++
}
}
}
func BenchmarkCompareError(b *testing.B) {
j := 0
for i := b.N; i > 0; i-- {
if globalError == syserror.EINVAL {
j++
}
}
}
func BenchmarkSwitchErrno(b *testing.B) {
j := 0
for i := b.N; i > 0; i-- {
switch globalError {
case syscall.EINVAL:
j += 1
case syscall.EINTR:
j += 2
case syscall.EAGAIN:
j += 3
}
}
}
func BenchmarkSwitchError(b *testing.B) {
j := 0
for i := b.N; i > 0; i-- {
switch globalError {
case syserror.EINVAL:
j += 1
case syserror.EINTR:
j += 2
case syserror.EAGAIN:
j += 3
}
}
}
type translationTestTable struct {
fn string
errIn error
syscallErrorIn syscall.Errno
expectedBool bool
expectedTranslation syscall.Errno
}
func TestErrorTranslation(t *testing.T) {
myError := errors.New("My test error")
myError2 := errors.New("Another test error")
testTable := []translationTestTable{
{"TranslateError", myError, 0, false, 0},
{"TranslateError", myError2, 0, false, 0},
{"AddErrorTranslation", myError, syscall.EAGAIN, true, 0},
{"AddErrorTranslation", myError, syscall.EAGAIN, false, 0},
{"AddErrorTranslation", myError, syscall.EPERM, false, 0},
{"TranslateError", myError, 0, true, syscall.EAGAIN},
{"TranslateError", myError2, 0, false, 0},
{"AddErrorTranslation", myError2, syscall.EPERM, true, 0},
{"AddErrorTranslation", myError2, syscall.EPERM, false, 0},
{"AddErrorTranslation", myError2, syscall.EAGAIN, false, 0},
{"TranslateError", myError, 0, true, syscall.EAGAIN},
{"TranslateError", myError2, 0, true, syscall.EPERM},
}
for _, tt := range testTable {
switch tt.fn {
case "TranslateError":
err, ok := syserror.TranslateError(tt.errIn)
if ok != tt.expectedBool {
t.Fatalf("%v(%v) => %v expected %v", tt.fn, tt.errIn, ok, tt.expectedBool)
} else if err != tt.expectedTranslation {
t.Fatalf("%v(%v) (error) => %v expected %v", tt.fn, tt.errIn, err, tt.expectedTranslation)
}
case "AddErrorTranslation":
ok := syserror.AddErrorTranslation(tt.errIn, tt.syscallErrorIn)
if ok != tt.expectedBool {
t.Fatalf("%v(%v) => %v expected %v", tt.fn, tt.errIn, ok, tt.expectedBool)
}
default:
t.Fatalf("Unknown function %v", tt.fn)
}
}
}
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