cmdrun

package

v0.4.2 Latest Latest Go to latest Published: Oct 17, 2026 License: MIT Imports: 6 Imported by: 0

Details

Package cmdrun runs host commands (ip, nft, mkfs.ext4) behind a small interface so that callers can be tested with a fake.

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type Call struct {
	Name  string
	Args  []string
	Stdin string
}

Call is one recorded invocation of a Fake.

func (c Call) String() string

String renders the call as a shell-like line.

type Exec struct{}

Exec runs real commands.

func (Exec) Run(ctx context.Context, stdin io.Reader, name string, args ...string) ([]byte, error)

Run implements Runner. A non-zero exit becomes an error carrying the command line and its output.

type Fake struct {
	Calls  []Call
	Handle func(Call) ([]byte, error)
}

Fake records calls and answers them with Handle (nil means success).

func (f *Fake) Lines() []string

Lines returns the recorded calls as strings.

func (f *Fake) Run(_ context.Context, stdin io.Reader, name string, args ...string) ([]byte, error)

Run implements Runner.

type Runner interface {
	Run(ctx context.Context, stdin io.Reader, name string, args ...string) ([]byte, error)
}

Runner runs a command to completion and returns its combined output.