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testutils.go
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testutils.go
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package testutils
import (
"context"
"crypto/ecdsa"
"crypto/rand"
"encoding/base64"
"flag"
"fmt"
"math"
"math/big"
mrand "math/rand"
"net/http"
"net/http/httptest"
"net/url"
"strings"
"sync"
"testing"
"time"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/crypto"
"github.com/google/uuid"
"github.com/gorilla/websocket"
"github.com/tidwall/gjson"
"go.uber.org/zap/zaptest/observer"
"github.com/jmoiron/sqlx"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
// NOTE: To avoid circular dependencies, this package MUST NOT import
// anything from "github.com/smartcontractkit/chainlink/v2/core"
)
const (
// Password just a password we use everywhere for testing
Password = "16charlengthp4SsW0rD1!@#_"
)
// FixtureChainID matches the chain always added by fixtures.sql
// It is set to 0 since no real chain ever has this ID and allows a virtual
// "test" chain ID to be used without clashes
var FixtureChainID = big.NewInt(0)
// SimulatedChainID is the chain ID for the go-ethereum simulated backend
var SimulatedChainID = big.NewInt(1337)
// MustNewSimTransactor returns a transactor for interacting with the
// geth simulated backend.
func MustNewSimTransactor(t testing.TB) *bind.TransactOpts {
key, err := crypto.GenerateKey()
require.NoError(t, err)
transactor, err := bind.NewKeyedTransactorWithChainID(key, SimulatedChainID)
require.NoError(t, err)
return transactor
}
// NewAddress return a random new address
func NewAddress() common.Address {
return common.BytesToAddress(randomBytes(20))
}
func NewAddressPtr() *common.Address {
a := common.BytesToAddress(randomBytes(20))
return &a
}
// NewPrivateKeyAndAddress returns a new private key and the corresponding address
func NewPrivateKeyAndAddress(t testing.TB) (*ecdsa.PrivateKey, common.Address) {
privateKey, err := crypto.GenerateKey()
require.NoError(t, err)
publicKey := privateKey.Public()
publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
require.True(t, ok)
address := crypto.PubkeyToAddress(*publicKeyECDSA)
return privateKey, address
}
// NewRandomPositiveInt64 returns a (non-cryptographically secure) random positive int64
func NewRandomPositiveInt64() int64 {
id := mrand.Int63()
return id
}
// NewRandomEVMChainID returns a suitable random chain ID that will not conflict
// with fixtures
func NewRandomEVMChainID() *big.Int {
id := mrand.Int63n(math.MaxInt32) + 10000
return big.NewInt(id)
}
func randomBytes(n int) []byte {
b := make([]byte, n)
_, err := rand.Read(b)
if err != nil {
panic(err)
}
return b
}
// Random32Byte returns a random [32]byte
func Random32Byte() (b [32]byte) {
copy(b[:], randomBytes(32))
return b
}
// RandomizeName appends a random UUID to the provided name
func RandomizeName(n string) string {
id := uuid.New().String()
return n + id
}
// DefaultWaitTimeout is the default wait timeout. If you have a *testing.T, use WaitTimeout instead.
const DefaultWaitTimeout = 30 * time.Second
// WaitTimeout returns a timeout based on the test's Deadline, if available.
// Especially important to use in parallel tests, as their individual execution
// can get paused for arbitrary amounts of time.
func WaitTimeout(t *testing.T) time.Duration {
if d, ok := t.Deadline(); ok {
// 10% buffer for cleanup and scheduling delay
return time.Until(d) * 9 / 10
}
return DefaultWaitTimeout
}
// AfterWaitTimeout returns a channel that will send a time value when the
// WaitTimeout is reached
func AfterWaitTimeout(t *testing.T) <-chan time.Time {
return time.After(WaitTimeout(t))
}
// Context returns a context with the test's deadline, if available.
func Context(tb testing.TB) context.Context {
ctx := context.Background()
var cancel func()
switch t := tb.(type) {
case *testing.T:
if d, ok := t.Deadline(); ok {
ctx, cancel = context.WithDeadline(ctx, d)
}
}
if cancel == nil {
ctx, cancel = context.WithCancel(ctx)
}
tb.Cleanup(cancel)
return ctx
}
// MustParseURL parses the URL or fails the test
func MustParseURL(t testing.TB, input string) *url.URL {
u, err := url.Parse(input)
require.NoError(t, err)
return u
}
// MustParseBigInt parses a big int value from string or fails the test
func MustParseBigInt(t *testing.T, input string) *big.Int {
i := new(big.Int)
_, err := fmt.Sscan(input, i)
require.NoError(t, err)
return i
}
// JSONRPCHandler is called with the method and request param(s).
// respResult will be sent immediately. notifyResult is optional, and sent after a short delay.
type JSONRPCHandler func(reqMethod string, reqParams gjson.Result) JSONRPCResponse
type JSONRPCResponse struct {
Result, Notify string // raw JSON (i.e. quoted strings etc.)
Error struct {
Code int
Message string
}
}
type testWSServer struct {
t *testing.T
s *httptest.Server
mu sync.RWMutex
wsconns []*websocket.Conn
wg sync.WaitGroup
}
// NewWSServer starts a websocket server which invokes callback for each message received.
// If chainID is set, then eth_chainId calls will be automatically handled.
func NewWSServer(t *testing.T, chainID *big.Int, callback JSONRPCHandler) (ts *testWSServer) {
ts = new(testWSServer)
ts.t = t
ts.wsconns = make([]*websocket.Conn, 0)
handler := ts.newWSHandler(chainID, callback)
ts.s = httptest.NewServer(handler)
t.Cleanup(ts.Close)
return
}
func (ts *testWSServer) Close() {
if func() bool {
ts.mu.Lock()
defer ts.mu.Unlock()
if ts.wsconns == nil {
ts.t.Log("Test WS server already closed")
return false
}
ts.s.CloseClientConnections()
ts.s.Close()
for _, ws := range ts.wsconns {
ws.Close()
}
ts.wsconns = nil // nil indicates server closed
return true
}() {
ts.wg.Wait()
}
}
func (ts *testWSServer) WSURL() *url.URL {
return WSServerURL(ts.t, ts.s)
}
func (ts *testWSServer) MustWriteBinaryMessageSync(t *testing.T, msg string) {
ts.mu.Lock()
defer ts.mu.Unlock()
conns := ts.wsconns
if len(conns) != 1 {
t.Fatalf("expected 1 conn, got %d", len(conns))
}
conn := conns[0]
err := conn.WriteMessage(websocket.BinaryMessage, []byte(msg))
require.NoError(t, err)
}
func (ts *testWSServer) newWSHandler(chainID *big.Int, callback JSONRPCHandler) (handler http.HandlerFunc) {
if callback == nil {
callback = func(method string, params gjson.Result) (resp JSONRPCResponse) { return }
}
t := ts.t
upgrader := websocket.Upgrader{
CheckOrigin: func(r *http.Request) bool { return true },
}
return func(w http.ResponseWriter, r *http.Request) {
ts.mu.Lock()
if ts.wsconns == nil { // closed
ts.mu.Unlock()
return
}
ts.wg.Add(1)
defer ts.wg.Done()
conn, err := upgrader.Upgrade(w, r, nil)
if !assert.NoError(t, err, "Failed to upgrade WS connection") {
ts.mu.Unlock()
return
}
defer conn.Close()
ts.wsconns = append(ts.wsconns, conn)
ts.mu.Unlock()
for {
_, data, err := conn.ReadMessage()
if err != nil {
if websocket.IsCloseError(err, websocket.CloseNormalClosure, websocket.CloseAbnormalClosure) {
ts.t.Log("Websocket closing")
return
}
ts.t.Logf("Failed to read message: %v", err)
return
}
ts.t.Log("Received message", string(data))
req := gjson.ParseBytes(data)
if !req.IsObject() {
ts.t.Logf("Request must be object: %v", req.Type)
return
}
if e := req.Get("error"); e.Exists() {
ts.t.Logf("Received jsonrpc error: %v", e)
continue
}
m := req.Get("method")
if m.Type != gjson.String {
ts.t.Logf("Method must be string: %v", m.Type)
return
}
var resp JSONRPCResponse
if chainID != nil && m.String() == "eth_chainId" {
resp.Result = `"0x` + chainID.Text(16) + `"`
} else if m.String() == "eth_syncing" {
resp.Result = "false"
} else {
resp = callback(m.String(), req.Get("params"))
}
id := req.Get("id")
var msg string
if resp.Error.Message != "" {
msg = fmt.Sprintf(`{"jsonrpc":"2.0","id":%s,"error":{"code":%d,"message":"%s"}}`, id, resp.Error.Code, resp.Error.Message)
} else {
msg = fmt.Sprintf(`{"jsonrpc":"2.0","id":%s,"result":%s}`, id, resp.Result)
}
ts.t.Logf("Sending message: %v", msg)
ts.mu.Lock()
err = conn.WriteMessage(websocket.BinaryMessage, []byte(msg))
ts.mu.Unlock()
if err != nil {
ts.t.Logf("Failed to write message: %v", err)
return
}
if resp.Notify != "" {
time.Sleep(100 * time.Millisecond)
msg := fmt.Sprintf(`{"jsonrpc":"2.0","method":"eth_subscription","params":{"subscription":"0x00","result":%s}}`, resp.Notify)
ts.t.Log("Sending message", msg)
ts.mu.Lock()
err = conn.WriteMessage(websocket.BinaryMessage, []byte(msg))
ts.mu.Unlock()
if err != nil {
ts.t.Logf("Failed to write message: %v", err)
return
}
}
}
}
}
// WaitWithTimeout waits for the channel to close (or receive anything) and
// fatals the test if the default wait timeout is exceeded
func WaitWithTimeout(t *testing.T, ch <-chan struct{}, failMsg string) {
select {
case <-ch:
case <-time.After(WaitTimeout(t)):
t.Fatal(failMsg)
}
}
// WSServerURL returns a ws:// url for the server
func WSServerURL(t *testing.T, s *httptest.Server) *url.URL {
u, err := url.Parse(s.URL)
require.NoError(t, err, "Failed to parse url")
u.Scheme = "ws"
return u
}
// IntToHex converts int to geth-compatible hex
func IntToHex(n int) string {
return hexutil.EncodeBig(big.NewInt(int64(n)))
}
// TestInterval is just a sensible poll interval that gives fast tests without
// risk of spamming
const TestInterval = 100 * time.Millisecond
// AssertEventually waits for f to return true
func AssertEventually(t *testing.T, f func() bool) {
assert.Eventually(t, f, WaitTimeout(t), TestInterval/2)
}
// RequireLogMessage fails the test if emitted logs don't contain the given message
func RequireLogMessage(t *testing.T, observedLogs *observer.ObservedLogs, msg string) {
for _, l := range observedLogs.All() {
if strings.Contains(l.Message, msg) {
return
}
}
t.Log("observed logs", observedLogs.All())
t.Fatalf("expected observed logs to contain msg %q, but it didn't", msg)
}
// WaitForLogMessage waits until at least one log message containing the
// specified msg is emitted.
// NOTE: This does not "pop" messages so it cannot be used multiple times to
// check for new instances of the same msg. See WaitForLogMessageCount instead.
//
// Get a *observer.ObservedLogs like so:
//
// observedZapCore, observedLogs := observer.New(zap.DebugLevel)
// lggr := logger.TestLogger(t, observedZapCore)
func WaitForLogMessage(t *testing.T, observedLogs *observer.ObservedLogs, msg string) {
AssertEventually(t, func() bool {
for _, l := range observedLogs.All() {
if strings.Contains(l.Message, msg) {
return true
}
}
return false
})
}
// WaitForLogMessageCount waits until at least count log message containing the
// specified msg is emitted
func WaitForLogMessageCount(t *testing.T, observedLogs *observer.ObservedLogs, msg string, count int) {
AssertEventually(t, func() bool {
i := 0
for _, l := range observedLogs.All() {
if strings.Contains(l.Message, msg) {
i++
if i >= count {
return true
}
}
}
return false
})
}
// SkipShort skips tb during -short runs, and notes why.
func SkipShort(tb testing.TB, why string) {
if testing.Short() {
tb.Skipf("skipping: %s", why)
}
}
// SkipShortDB skips tb during -short runs, and notes the DB dependency.
func SkipShortDB(tb testing.TB) {
SkipShort(tb, "DB dependency")
}
func AssertCount(t *testing.T, db *sqlx.DB, tableName string, expected int64) {
t.Helper()
var count int64
err := db.Get(&count, fmt.Sprintf(`SELECT count(*) FROM %s;`, tableName))
require.NoError(t, err)
require.Equal(t, expected, count)
}
func NewTestFlagSet() *flag.FlagSet {
return flag.NewFlagSet("test", flag.PanicOnError)
}
// Ptr takes pointer of anything
func Ptr[T any](v T) *T {
return &v
}
func MustDecodeBase64(s string) (b []byte) {
var err error
b, err = base64.StdEncoding.DecodeString(s)
if err != nil {
panic(err)
}
return
}
func SkipFlakey(t *testing.T, ticketURL string) {
t.Skip("Flakey", ticketURL)
}
func MustRandBytes(n int) (b []byte) {
b = make([]byte, n)
_, err := rand.Read(b)
if err != nil {
panic(err)
}
return
}