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//go:build linux
// +build linux
/*
** Copyright (C) 2001-2025 Zabbix SIA
**
** Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
** documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
** rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
** permit persons to whom the Software is furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in all copies or substantial portions
** of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
** WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
** COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
** SOFTWARE.
**/
// package std is used to create wrappers for standard Go functions to support
// mocking in tests where necessary
package std
import (
"bytes"
"os"
"syscall"
"time"
"golang.org/x/sys/unix"
)
// mocked os functionality
type MockOs interface {
MockFile(path string, data []byte)
}
type fileTime struct {
ModTime time.Time
}
type mockOs struct {
files map[string][]byte
ftimes map[string]fileTime
}
type mockFile struct {
buffer *bytes.Buffer
}
type fileStat struct {
name string
size int64
mode FileMode
modTime time.Time
sys syscall.Stat_t
}
func (o *mockOs) Open(name string) (File, error) {
if data, ok := o.files[name]; !ok {
return nil, os.ErrNotExist
} else {
return &mockFile{bytes.NewBuffer(data)}, nil
}
}
func (o *fileStat) IsDir() bool {
return false
}
func (o *fileStat) Mode() os.FileMode {
return os.FileMode(o.mode)
}
func (o *fileStat) ModTime() time.Time {
return o.modTime
}
func (o *fileStat) Name() string {
return o.name
}
func (o *fileStat) Size() int64 {
return o.size
}
func (o *fileStat) Sys() interface{} {
return &o.sys
}
func (o *mockOs) Stat(name string) (os.FileInfo, error) {
if data, ok := o.files[name]; !ok {
return nil, os.ErrNotExist
} else {
var fs fileStat
fs.mode = 436
fs.modTime = o.ftimes[name].ModTime
fs.name = name
fs.size = int64(len(data))
a, err := unix.TimeToTimespec(o.ftimes[name].ModTime)
if err != nil {
return nil, err
}
fs.sys.Atim.Sec = a.Sec
fs.sys.Ctim.Sec = a.Sec
return &fs, nil
}
}
func (o *mockOs) IsExist(err error) bool {
if err == nil {
return false
}
if err.Error() == "exists" {
return true
}
return false
}
func (f *mockFile) Close() error {
return nil
}
func (f *mockFile) Read(p []byte) (n int, err error) {
return f.buffer.Read(p)
}
// MockFile creates new mock file with the specified path and contents.
func (o *mockOs) MockFile(path string, data []byte) {
o.files[path] = data
var ft fileTime
ft.ModTime = time.Now()
o.ftimes[path] = ft
}
// NewMockOs returns Os interface that replaces supported os package functionality with mock functions.
func NewMockOs() Os {
return &mockOs{
files: make(map[string][]byte),
ftimes: make(map[string]fileTime),
}
}
|
