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communicator_mock.go
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/
communicator_mock.go
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package packer
import (
"bytes"
"io"
"os"
"sync"
)
// MockCommunicator is a valid Communicator implementation that can be
// used for tests.
type MockCommunicator struct {
StartCalled bool
StartCmd *RemoteCmd
StartStderr string
StartStdout string
StartStdin string
StartExitStatus int
UploadCalled bool
UploadPath string
UploadData string
UploadDirDst string
UploadDirSrc string
UploadDirExclude []string
DownloadCalled bool
DownloadPath string
DownloadData string
}
func (c *MockCommunicator) Start(rc *RemoteCmd) error {
c.StartCalled = true
c.StartCmd = rc
go func() {
var wg sync.WaitGroup
if rc.Stdout != nil && c.StartStdout != "" {
wg.Add(1)
go func() {
rc.Stdout.Write([]byte(c.StartStdout))
wg.Done()
}()
}
if rc.Stderr != nil && c.StartStderr != "" {
wg.Add(1)
go func() {
rc.Stderr.Write([]byte(c.StartStderr))
wg.Done()
}()
}
if rc.Stdin != nil {
wg.Add(1)
go func() {
defer wg.Done()
var data bytes.Buffer
io.Copy(&data, rc.Stdin)
c.StartStdin = data.String()
}()
}
wg.Wait()
rc.SetExited(c.StartExitStatus)
}()
return nil
}
func (c *MockCommunicator) Upload(path string, r io.Reader, fi *os.FileInfo) error {
c.UploadCalled = true
c.UploadPath = path
var data bytes.Buffer
if _, err := io.Copy(&data, r); err != nil {
panic(err)
}
c.UploadData = data.String()
return nil
}
func (c *MockCommunicator) UploadDir(dst string, src string, excl []string) error {
c.UploadDirDst = dst
c.UploadDirSrc = src
c.UploadDirExclude = excl
return nil
}
func (c *MockCommunicator) Download(path string, w io.Writer) error {
c.DownloadCalled = true
c.DownloadPath = path
w.Write([]byte(c.DownloadData))
return nil
}