vos

Documentation

Overview

Package vos provides a basic virtual OS abstraction implementation.

This package mimicks "os" package features in-memory, so no real files are created, read, updated, or deleted. The package provides a "Patch()" function to inject this implementation e.g. during testing. Only test packages typically need to use this.

Index

• func CatchExit(catch func(code int))
• func ClearStdio(v vos)
• func GetStdio(v vos) (stdin, stdout, stderr io.ReadWriter)
• func MkTempDir(v vos) string
• func New() vos
• func Patch() (vos, func())
• func PatchArgs() (set func(args []string), reset func())

Functions

func CatchExit

func CatchExit(catch func(code int))

CatchExit allows recovering from vos.Exit() and calls catch with the denoted exit code.

func ClearStdio

func ClearStdio(v vos)

ClearStdio clears IO read-writers for Stdin, Stdout, and Stderr of the vos instance.

func GetStdio

func GetStdio(v vos) (stdin, stdout, stderr io.ReadWriter)

GetStdio returns IO read-writers for Stdin, Stdout, and Stderr of the vos instance.

func MkTempDir

func MkTempDir(v vos) string

MkTempDir creates a new pseudo-temporary directory.

func New

func New() vos

func Patch

func Patch() (vos, func())

func PatchArgs

func PatchArgs() (set func(args []string), reset func())

PatchArgs allows temporary overwriting of OS package args.