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301 lines
8.4 KiB
301 lines
8.4 KiB
package rpc
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import (
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"encoding/json"
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"fmt"
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"github.com/gorilla/websocket"
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"github.com/tendermint/tendermint/account"
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"github.com/tendermint/tendermint/binary"
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"github.com/tendermint/tendermint/rpc"
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"github.com/tendermint/tendermint/types"
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"net/http"
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"testing"
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"time"
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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(rpc.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(rpc.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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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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//--------------------------------------------------------------------------------
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// Test the websocket service
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// make a simple connection to the server
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func TestWSConnect(t *testing.T) {
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con := newWSCon(t)
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con.Close()
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}
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// receive a new block message
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func _TestWSNewBlock(t *testing.T) {
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con := newWSCon(t)
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eid := types.EventStringNewBlock()
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subscribe(t, con, eid)
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defer func() {
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unsubscribe(t, con, eid)
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con.Close()
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}()
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waitForEvent(t, con, eid, true, func() {}, func(eid string, b []byte) error {
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fmt.Println("Check:", string(b))
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return nil
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})
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}
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// receive a few new block messages in a row, with increasing height
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func TestWSBlockchainGrowth(t *testing.T) {
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con := newWSCon(t)
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eid := types.EventStringNewBlock()
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subscribe(t, con, eid)
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defer func() {
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unsubscribe(t, con, eid)
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con.Close()
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}()
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// listen for NewBlock, ensure height increases by 1
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unmarshalValidateBlockchain(t, con, eid)
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}
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// send a transaction and validate the events from listening for both sender and receiver
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func TestWSSend(t *testing.T) {
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toAddr := []byte{20, 143, 25, 63, 16, 177, 83, 29, 91, 91, 54, 23, 233, 46, 190, 121, 122, 34, 86, 54}
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amt := uint64(100)
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con := newWSCon(t)
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eidInput := types.EventStringAccInput(userByteAddr)
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eidOutput := types.EventStringAccOutput(toAddr)
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subscribe(t, con, eidInput)
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subscribe(t, con, eidOutput)
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defer func() {
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unsubscribe(t, con, eidInput)
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unsubscribe(t, con, eidOutput)
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con.Close()
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}()
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waitForEvent(t, con, eidInput, true, func() {
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broadcastTx(t, "JSONRPC", userByteAddr, toAddr, nil, userBytePriv, amt, 0, 0)
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}, unmarshalValidateSend(amt, toAddr))
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waitForEvent(t, con, eidOutput, true, func() {}, unmarshalValidateSend(amt, toAddr))
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}
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// ensure events are only fired once for a given transaction
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func TestWSDoubleFire(t *testing.T) {
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con := newWSCon(t)
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eid := types.EventStringAccInput(userByteAddr)
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subscribe(t, con, eid)
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defer func() {
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unsubscribe(t, con, eid)
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con.Close()
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}()
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amt := uint64(100)
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toAddr := []byte{20, 143, 25, 63, 16, 177, 83, 29, 91, 91, 54, 23, 233, 46, 190, 121, 122, 34, 86, 54}
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// broadcast the transaction, wait to hear about it
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waitForEvent(t, con, eid, true, func() {
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broadcastTx(t, "JSONRPC", userByteAddr, toAddr, nil, userBytePriv, amt, 0, 0)
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}, func(eid string, b []byte) error {
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return nil
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})
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// but make sure we don't hear about it twice
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waitForEvent(t, con, eid, false, func() {
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}, func(eid string, b []byte) error {
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return nil
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})
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}
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// create a contract, wait for the event, and send it a msg, validate the return
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func TestWSCallWait(t *testing.T) {
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con := newWSCon(t)
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eid1 := types.EventStringAccInput(userByteAddr)
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subscribe(t, con, eid1)
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defer func() {
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unsubscribe(t, con, eid1)
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con.Close()
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}()
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amt := uint64(10000)
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code, returnCode, returnVal := simpleContract()
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var contractAddr []byte
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// wait for the contract to be created
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waitForEvent(t, con, eid1, true, func() {
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_, receipt := broadcastTx(t, "JSONRPC", userByteAddr, nil, code, userBytePriv, amt, 1000, 1000)
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contractAddr = receipt.ContractAddr
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}, unmarshalValidateCall(amt, returnCode))
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// susbscribe to the new contract
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amt = uint64(10001)
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eid2 := types.EventStringAccReceive(contractAddr)
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subscribe(t, con, eid2)
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defer func() {
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unsubscribe(t, con, eid2)
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}()
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// get the return value from a call
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data := []byte{0x1} // just needs to be non empty for this to be a CallTx
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waitForEvent(t, con, eid2, true, func() {
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broadcastTx(t, "JSONRPC", userByteAddr, contractAddr, data, userBytePriv, amt, 1000, 1000)
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}, unmarshalValidateCall(amt, returnVal))
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}
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// create a contract and send it a msg without waiting. wait for contract event
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// and validate return
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func TestWSCallNoWait(t *testing.T) {
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con := newWSCon(t)
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amt := uint64(10000)
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code, _, returnVal := simpleContract()
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_, receipt := broadcastTx(t, "JSONRPC", userByteAddr, nil, code, userBytePriv, amt, 1000, 1000)
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contractAddr := receipt.ContractAddr
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// susbscribe to the new contract
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amt = uint64(10001)
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eid := types.EventStringAccReceive(contractAddr)
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subscribe(t, con, eid)
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defer func() {
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unsubscribe(t, con, eid)
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con.Close()
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}()
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// get the return value from a call
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data := []byte{0x1} // just needs to be non empty for this to be a CallTx
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waitForEvent(t, con, eid, true, func() {
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broadcastTx(t, "JSONRPC", userByteAddr, contractAddr, data, userBytePriv, amt, 1000, 1000)
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}, unmarshalValidateCall(amt, returnVal))
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}
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// create two contracts, one of which calls the other
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func TestWSCallCall(t *testing.T) {
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con := newWSCon(t)
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amt := uint64(10000)
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code, _, returnVal := simpleContract()
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txid := new([]byte)
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// deploy the two contracts
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_, receipt := broadcastTx(t, "JSONRPC", userByteAddr, nil, code, userBytePriv, amt, 1000, 1000)
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contractAddr1 := receipt.ContractAddr
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code, _, _ = simpleCallContract(contractAddr1)
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_, receipt = broadcastTx(t, "JSONRPC", userByteAddr, nil, code, userBytePriv, amt, 1000, 1000)
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contractAddr2 := receipt.ContractAddr
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// susbscribe to the new contracts
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amt = uint64(10001)
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eid1 := types.EventStringAccReceive(contractAddr1)
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eid2 := types.EventStringAccReceive(contractAddr2)
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subscribe(t, con, eid1)
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subscribe(t, con, eid2)
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defer func() {
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unsubscribe(t, con, eid1)
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unsubscribe(t, con, eid2)
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con.Close()
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}()
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// call contract2, which should call contract1, and wait for ev1
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data := []byte{0x1} // just needs to be non empty for this to be a CallTx
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waitForEvent(t, con, eid1, true, func() {
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tx, _ := broadcastTx(t, "JSONRPC", userByteAddr, contractAddr2, data, userBytePriv, amt, 1000, 1000)
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*txid = account.HashSignBytes(tx)
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}, unmarshalValidateCallCall(userByteAddr, returnVal, txid))
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}
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