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