exec

package
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Published: Oct 17, 2014 License: Apache-2.0 Imports: 2 Imported by: 0

Documentation

Overview

Package exec provides an injectable interface and implementations for running commands.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Cmd

type Cmd interface {
	// CombinedOutput runs the command and returns its combined standard output
	// and standard error.  This follows the pattern of package os/exec.
	CombinedOutput() ([]byte, error)
}

Cmd is an interface that presents an API that is very similar to Cmd from os/exec. As more functionality is needed, this can grow. Since Cmd is a struct, we will have to replace fields with get/set method pairs.

type ExitError

type ExitError interface {
	String() string
	Error() string
	Exited() bool
	ExitStatus() int
}

ExitError is an interface that presents an API similar to os.ProcessState, which is what ExitError from os/exec is. This is designed to make testing a bit easier and probably loses some of the cross-platform properties of the underlying library.

type Interface

type Interface interface {
	// Command returns a Cmd instance which can be used to run a single command.
	// This follows the pattern of package os/exec.
	Command(cmd string, args ...string) Cmd
}

Interface is an interface that presents a subset of the os/exec API. Use this when you want to inject fakeable/mockable exec behavior.

func New

func New() Interface

New returns a new Interface which will os/exec to run commands.

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