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package rpctest
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
"testing"
"time"
"github.com/tendermint/tendermint/Godeps/_workspace/src/github.com/gorilla/websocket"
"github.com/tendermint/tendermint/binary"
_ "github.com/tendermint/tendermint/config/tendermint_test"
"github.com/tendermint/tendermint/rpc/types"
"github.com/tendermint/tendermint/types"
)
//--------------------------------------------------------------------------------
// Utilities for testing the websocket service
// create a new connection
func newWSCon(t *testing.T) *websocket.Conn {
dialer := websocket.DefaultDialer
rHeader := http.Header{}
con, r, err := dialer.Dial(websocketAddr, rHeader)
fmt.Println("response", r)
if err != nil {
t.Fatal(err)
}
return con
}
// subscribe to an event
func subscribe(t *testing.T, con *websocket.Conn, eventid string) {
err := con.WriteJSON(rpctypes.WSRequest{
Type: "subscribe",
Event: eventid,
})
if err != nil {
t.Fatal(err)
}
}
// unsubscribe from an event
func unsubscribe(t *testing.T, con *websocket.Conn, eventid string) {
err := con.WriteJSON(rpctypes.WSRequest{
Type: "unsubscribe",
Event: eventid,
})
if err != nil {
t.Fatal(err)
}
}
// wait for an event; do things that might trigger events, and check them when they are received
func waitForEvent(t *testing.T, con *websocket.Conn, eventid string, dieOnTimeout bool, f func(), check func(string, []byte) error) {
// go routine to wait for webscoket msg
gch := make(chan []byte) // good channel
ech := make(chan error) // error channel
go func() {
for {
_, p, err := con.ReadMessage()
if err != nil {
ech <- err
break
} else {
// if the event id isnt what we're waiting on
// ignore it
var response struct {
Event string `json:"event"`
}
if err := json.Unmarshal(p, &response); err != nil {
ech <- err
break
}
if response.Event == eventid {
gch <- p
break
}
}
}
}()
// do stuff (transactions)
f()
// wait for an event or 10 seconds
ticker := time.Tick(10 * time.Second)
select {
case <-ticker:
if dieOnTimeout {
con.Close()
t.Fatalf("%s event was not received in time", eventid)
}
// else that's great, we didn't hear the event
// and we shouldn't have
case p := <-gch:
if dieOnTimeout {
// message was received and expected
// run the check
err := check(eventid, p)
if err != nil {
t.Fatal(err)
}
} else {
con.Close()
t.Fatalf("%s event was not expected", eventid)
}
case err := <-ech:
t.Fatal(err)
}
}
//--------------------------------------------------------------------------------
func unmarshalResponseNewBlock(b []byte) (*types.Block, error) {
// unmarshall and assert somethings
var response struct {
Event string `json:"event"`
Data *types.Block `json:"data"`
Error string `json:"error"`
}
var err error
binary.ReadJSON(&response, b, &err)
if err != nil {
return nil, err
}
if response.Error != "" {
return nil, fmt.Errorf(response.Error)
}
block := response.Data
return block, nil
}
func unmarshalValidateBlockchain(t *testing.T, con *websocket.Conn, eid string) {
var initBlockN int
for i := 0; i < 2; i++ {
waitForEvent(t, con, eid, true, func() {}, func(eid string, b []byte) error {
block, err := unmarshalResponseNewBlock(b)
if err != nil {
return err
}
if i == 0 {
initBlockN = block.Header.Height
} else {
if block.Header.Height != initBlockN+i {
return fmt.Errorf("Expected block %d, got block %d", i, block.Header.Height)
}
}
return nil
})
}
}
func unmarshalValidateSend(amt int64, toAddr []byte) func(string, []byte) error {
return func(eid string, b []byte) error {
// unmarshal and assert correctness
var response struct {
Event string `json:"event"`
Data types.SendTx `json:"data"`
Error string `json:"error"`
}
var err error
binary.ReadJSON(&response, b, &err)
if err != nil {
return err
}
if response.Error != "" {
return fmt.Errorf(response.Error)
}
if eid != response.Event {
return fmt.Errorf("Eventid is not correct. Got %s, expected %s", response.Event, eid)
}
tx := response.Data
if bytes.Compare(tx.Inputs[0].Address, user[0].Address) != 0 {
return fmt.Errorf("Senders do not match up! Got %x, expected %x", tx.Inputs[0].Address, user[0].Address)
}
if tx.Inputs[0].Amount != amt {
return fmt.Errorf("Amt does not match up! Got %d, expected %d", tx.Inputs[0].Amount, amt)
}
if bytes.Compare(tx.Outputs[0].Address, toAddr) != 0 {
return fmt.Errorf("Receivers do not match up! Got %x, expected %x", tx.Outputs[0].Address, user[0].Address)
}
return nil
}
}
func unmarshalValidateCall(amt int64, returnCode []byte) func(string, []byte) error {
return func(eid string, b []byte) error {
// unmarshall and assert somethings
var response struct {
Event string `json:"event"`
Data struct {
Tx types.CallTx `json:"tx"`
Return []byte `json:"return"`
Exception string `json:"exception"`
} `json:"data"`
Error string `json:"error"`
}
var err error
binary.ReadJSON(&response, b, &err)
if err != nil {
return err
}
if response.Error != "" {
return fmt.Errorf(response.Error)
}
if response.Data.Exception != "" {
return fmt.Errorf(response.Data.Exception)
}
tx := response.Data.Tx
if bytes.Compare(tx.Input.Address, user[0].Address) != 0 {
return fmt.Errorf("Senders do not match up! Got %x, expected %x", tx.Input.Address, user[0].Address)
}
if tx.Input.Amount != amt {
return fmt.Errorf("Amt does not match up! Got %d, expected %d", tx.Input.Amount, amt)
}
ret := response.Data.Return
if bytes.Compare(ret, returnCode) != 0 {
return fmt.Errorf("Call did not return correctly. Got %x, expected %x", ret, returnCode)
}
return nil
}
}
func unmarshalValidateCallCall(origin, returnCode []byte, txid *[]byte) func(string, []byte) error {
return func(eid string, b []byte) error {
// unmarshall and assert somethings
var response struct {
Event string `json:"event"`
Data types.EventMsgCall `json:"data"`
Error string `json:"error"`
}
var err error
binary.ReadJSON(&response, b, &err)
if err != nil {
return err
}
if response.Error != "" {
return fmt.Errorf(response.Error)
}
if response.Data.Exception != "" {
return fmt.Errorf(response.Data.Exception)
}
if bytes.Compare(response.Data.Origin, origin) != 0 {
return fmt.Errorf("Origin does not match up! Got %x, expected %x", response.Data.Origin, origin)
}
ret := response.Data.Return
if bytes.Compare(ret, returnCode) != 0 {
return fmt.Errorf("Call did not return correctly. Got %x, expected %x", ret, returnCode)
}
if bytes.Compare(response.Data.TxId, *txid) != 0 {
return fmt.Errorf("TxIds do not match up! Got %x, expected %x", response.Data.TxId, *txid)
}
return nil
}
}