Fix existing tests

Fixes #13
This commit is contained in:
Søren L. Hansen 2021-06-03 12:22:00 -07:00
parent bffd82185c
commit d674aa1120

View File

@ -9,52 +9,65 @@ import (
"testing"
)
type pipePair struct {
*io.PipeReader
*io.PipeWriter
type mockMaster struct {
gottyToMasterReader io.Reader
gottyToMasterWriter io.Writer
masterToGottyReader io.Reader
masterToGottyWriter io.Writer
}
type mockSlave struct {
gottyToSlaveReader io.Reader
gottyToSlaveWriter io.Writer
slaveToGottyReader io.Reader
slaveToGottyWriter io.Writer
columns, rows int
}
func TestWriteFromPTY(t *testing.T) {
connInPipeReader, connInPipeWriter := io.Pipe() // in to conn
connOutPipeReader, _ := io.Pipe() // out from conn
mMaster := newMockMaster()
mSlave := newMockSlave()
conn := pipePair{
connOutPipeReader,
connInPipeWriter,
}
dt, err := New(conn)
dt, err := New(mMaster, mSlave)
if err != nil {
t.Fatalf("Unexpected error from New(): %s", err)
}
// Launch GoTTY
ctx, cancel := context.WithCancel(context.Background())
var wg sync.WaitGroup
wg.Add(1)
go func() {
wg.Done()
err := dt.Run(ctx)
if err != nil {
t.Fatalf("Unexpected error from Run(): %s", err)
}
dt.Run(ctx)
}()
message := []byte("foobar")
n, err := dt.TTY().Write(message)
if err != nil {
t.Fatalf("Unexpected error from Write(): %s", err)
}
if n != len(message) {
t.Fatalf("Write() accepted `%d` for message `%s`", n, message)
}
// Check that the initialization happens as expected
checkNextMsgType(t, mMaster.gottyToMasterReader, SetWindowTitle)
checkNextMsgType(t, mMaster.gottyToMasterReader, SetBufferSize)
// Simulate the slave (the process being run by GoTTY)
// echoing "foobar"
buf := make([]byte, 1024)
n, err = connInPipeReader.Read(buf)
message := []byte("foobar")
wg.Add(1)
go func() {
dt.handleSlaveReadEvent(message)
wg.Done()
}()
// And then make sure it makes it way to the client
// through the websocket as an output message
n, err := mMaster.gottyToMasterReader.Read(buf)
if err != nil {
t.Fatalf("Unexpected error from Read(): %s", err)
}
if buf[0] != Output {
t.Fatalf("Unexpected message type `%c`", buf[0])
}
// Decode it and make sure it's intact
decoded := make([]byte, 1024)
n, err = base64.StdEncoding.Decode(decoded, buf[1:n])
if err != nil {
@ -68,29 +81,38 @@ func TestWriteFromPTY(t *testing.T) {
wg.Wait()
}
func TestWriteFromConn(t *testing.T) {
connInPipeReader, connInPipeWriter := io.Pipe() // in to conn
connOutPipeReader, connOutPipeWriter := io.Pipe() // out from conn
conn := pipePair{
connOutPipeReader,
connInPipeWriter,
func checkNextMsgType(t *testing.T, connInPipeReader io.Reader, expected byte) {
msgType, _ := nextMsg(t, connInPipeReader)
if msgType != expected {
t.Fatalf("Unexpected message type `%c`", msgType)
}
}
dt, err := New(conn)
func nextMsg(t *testing.T, reader io.Reader) (byte, []byte) {
buf := make([]byte, 1024)
_, err := reader.Read(buf)
if err != nil {
t.Fatalf("unexpected error %v", err)
}
return buf[0], buf[1:]
}
func TestWriteFromConn(t *testing.T) {
mMaster := newMockMaster()
mSlave := newMockSlave()
dt, err := New(mMaster, mSlave, WithPermitWrite())
if err != nil {
t.Fatalf("Unexpected error from New(): %s", err)
}
// Launch GoTTY
ctx, cancel := context.WithCancel(context.Background())
var wg sync.WaitGroup
wg.Add(1)
go func() {
wg.Done()
err := dt.Run(ctx)
if err != nil {
t.Fatalf("Unexpected error from Run(): %s", err)
}
dt.Run(ctx)
}()
var (
@ -99,17 +121,20 @@ func TestWriteFromConn(t *testing.T) {
)
readBuf := make([]byte, 1024)
// input
message = []byte("0hello\n") // line buffered canonical mode
n, err = connOutPipeWriter.Write(message)
if err != nil {
t.Fatalf("Unexpected error from Write(): %s", err)
}
if n != len(message) {
t.Fatalf("Write() accepted `%d` for message `%s`", n, message)
}
// Absorb initialization messages
mMaster.gottyToMasterReader.Read(readBuf)
mMaster.gottyToMasterReader.Read(readBuf)
n, err = dt.TTY().Read(readBuf)
// simulate input from frontend...
message = []byte("1hello\n") // line buffered canonical mode
wg.Add(1)
go func() {
dt.handleMasterReadEvent(message)
wg.Done()
}()
// ...and make sure it makes it through to the slave intact
n, err = mSlave.gottyToSlaveReader.Read(readBuf)
if err != nil {
t.Fatalf("Unexpected error from Write(): %s", err)
}
@ -118,17 +143,20 @@ func TestWriteFromConn(t *testing.T) {
}
// ping
message = []byte("1\n") // line buffered canonical mode
n, err = connOutPipeWriter.Write(message)
message = []byte("2\n") // line buffered canonical mode
n, err = mMaster.masterToGottyWriter.Write(message)
if err != nil {
t.Fatalf("Unexpected error from Write(): %s", err)
}
if n != len(message) {
t.Fatalf("Write() accepted `%d` for message `%s`", n, message)
}
n, err = connInPipeReader.Read(readBuf)
n, err = mMaster.gottyToMasterReader.Read(readBuf)
if err != nil {
t.Fatalf("Unexpected error from Read(): %s", err)
}
if !bytes.Equal(readBuf[:n], []byte{'1'}) {
if !bytes.Equal(readBuf[:n], []byte{'2'}) {
t.Fatalf("Unexpected message received: `%s`", readBuf[:n])
}
@ -137,3 +165,43 @@ func TestWriteFromConn(t *testing.T) {
cancel()
wg.Wait()
}
func newMockMaster() *mockMaster {
rv := &mockMaster{}
rv.gottyToMasterReader, rv.gottyToMasterWriter = io.Pipe()
rv.masterToGottyReader, rv.masterToGottyWriter = io.Pipe()
return rv
}
func (mm *mockMaster) Read(buf []byte) (int, error) {
return mm.masterToGottyReader.Read(buf)
}
func (mm *mockMaster) Write(buf []byte) (int, error) {
return mm.gottyToMasterWriter.Write(buf)
}
func newMockSlave() *mockSlave {
rv := &mockSlave{}
rv.gottyToSlaveReader, rv.gottyToSlaveWriter = io.Pipe()
rv.slaveToGottyReader, rv.slaveToGottyWriter = io.Pipe()
return rv
}
func (ms *mockSlave) Read(buf []byte) (int, error) {
return ms.slaveToGottyReader.Read(buf)
}
func (ms *mockSlave) Write(buf []byte) (int, error) {
return ms.gottyToSlaveWriter.Write(buf)
}
func (ms *mockSlave) WindowTitleVariables() map[string]interface{} {
return nil
}
func (ms *mockSlave) ResizeTerminal(columns int, rows int) error {
ms.columns = columns
ms.rows = rows
return nil
}