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api_test.go
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api_test.go
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package deriv
import (
"bufio"
"context"
"log"
"os"
"strings"
"testing"
"time"
"github.com/coder/websocket"
"github.com/ksysoev/deriv-api/schema"
)
func TestNewDerivAPI(t *testing.T) {
// Valid endpoint and origin
endpoint := "wss://example.com/ws"
origin := "https://example.com"
appID := 123
lang := "en"
api, err := NewDerivAPI(endpoint, appID, lang, origin)
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
if api.Endpoint.String() != endpoint+"?app_id=123&l=en" {
t.Errorf("Unexpected endpoint: got %v, want %v", api.Endpoint.String(), endpoint)
}
if api.Origin.String() != origin {
t.Errorf("Unexpected origin: got %v, want %v", api.Origin.String(), origin)
}
// Invalid endpoint scheme
endpoint = "https://example.com/ws"
origin = "https://example.com"
appID = 123
lang = "en"
if _, err = NewDerivAPI(endpoint, appID, lang, origin); err == nil {
t.Errorf("Expected error, got nil")
}
// Invalid app ID
endpoint = "wss://example.com/ws"
origin = "https://example.com"
appID = -1
lang = "en"
if _, err = NewDerivAPI(endpoint, appID, lang, origin); err == nil {
t.Errorf("Expected error, got nil")
}
// Invalid language
endpoint = "wss://example.com/ws"
origin = "https://example.com"
appID = 123
lang = "eng"
if _, err = NewDerivAPI(endpoint, appID, lang, origin); err == nil {
t.Errorf("Expected error, got nil")
}
// Invalid endpoint URL
endpoint = ":invalid:"
origin = "https://example.com"
appID = 123
lang = "en"
if _, err = NewDerivAPI(endpoint, appID, lang, origin); err == nil {
t.Errorf("Expected error, got nil")
}
// Invalid origin URL
endpoint = "wss://example.com/ws"
origin = ":invalid:"
appID = 123
lang = "en"
if _, err = NewDerivAPI(endpoint, appID, lang, origin); err == nil {
t.Errorf("Expected error, got nil")
}
}
func TestGetNextRequestID(t *testing.T) {
api := &Client{lastRequestID: 0}
requestIDs := make(map[int]bool)
orderedRequestIDs := make([]int, 0)
numRequests := 5
for i := 0; i < numRequests; i++ {
requestID := api.getNextRequestID()
if _, ok := requestIDs[requestID]; ok {
t.Errorf("Request ID %d already used", requestID)
}
requestIDs[requestID] = true
orderedRequestIDs = append(orderedRequestIDs, requestID)
}
if len(requestIDs) != numRequests {
t.Errorf("Expected %d unique request IDs, but got %d", numRequests, len(requestIDs))
}
lastID := 0
for _, id := range orderedRequestIDs {
if id <= lastID {
t.Errorf("Request IDs not increasing, lastID=%d currentID=%d", lastID, id)
}
lastID = id
}
}
func TestConnect(t *testing.T) {
server := newMockWSServer(echoHandler)
url := "ws://" + server.Listener.Addr().String()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com")
err := api.Connect()
if err != nil {
t.Errorf("Failed to connect to mocked WebSocket server: %v", err)
}
if api.ws == nil {
t.Errorf("WebSocket connection not established")
}
ws1 := api.ws
err = api.Connect()
if err != nil {
t.Errorf("Failed to connect to mocked WebSocket server: %v", err)
}
if api.ws != ws1 {
t.Errorf("Expected WebSocket connection to be the same, but got a different connection")
}
// Close the WebSocket connection and test that we can't connect again
server.Close()
api, _ = NewDerivAPI(url, 123, "en", "http://example.com")
err = api.Connect()
if err == nil {
t.Errorf("Expected fail to connect but didn't get any error")
}
if api.ws != nil {
t.Errorf("Expected fail to connect, but WebSocket connection was established")
}
}
func TestDisconnect(t *testing.T) {
server := newMockWSServer(echoHandler)
url := "ws://" + server.Listener.Addr().String()
defer server.Close()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com")
api.Disconnect()
if api.ws != nil {
t.Errorf("Expected WebSocket connection to be nil, but got a connection")
}
err := api.Connect()
if err != nil {
t.Errorf("Failed to connect to mocked WebSocket server: %v", err)
}
if api.ws == nil {
t.Errorf("WebSocket connection not established")
}
api.Disconnect()
if api.ws != nil {
t.Errorf("Expected WebSocket connection to be nil, but got a connection")
}
}
func TestSend(t *testing.T) {
server := newMockWSServer(echoHandler)
url := "ws://" + server.Listener.Addr().String()
defer server.Close()
ctx := context.Background()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com")
err := api.Connect()
if err != nil {
t.Errorf("Failed to connect to mocked WebSocket server: %v", err)
}
if api.ws == nil {
t.Errorf("WebSocket connection not established")
}
respChan, err := api.Send(ctx, 1, struct {
ReqID int `json:"req_id"`
}{1})
if err != nil {
t.Errorf("Failed to send message: %v", err)
}
if respChan == nil {
t.Errorf("Response channel is nil")
}
msg := <-respChan
testMsg := "{\"req_id\":1}"
if string(msg) != testMsg {
t.Errorf("Expected message to be %s, but got %s", testMsg, msg)
}
}
func TestSendToDisconnectedConnection(t *testing.T) {
server := newMockWSServer(echoHandler)
url := "ws://" + server.Listener.Addr().String()
server.Close()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com")
ctx := context.Background()
respChan, err := api.Send(ctx, 1, struct {
ReqID int `json:"req_id"`
}{1})
if err == nil {
t.Errorf("Expected error, got nil")
}
if respChan != nil {
t.Errorf("Expected response channel to be nil, but got a channel")
}
}
func TestSendReqWhichNobodyWaits(t *testing.T) {
server := newMockWSServer(echoHandler)
url := "ws://" + server.Listener.Addr().String()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com")
ctx := context.Background()
respChan, err := api.Send(ctx, 2, struct {
ReqID int `json:"req_id"`
}{1})
if err != nil {
t.Errorf("Failed to send message: %v", err)
}
select {
case <-respChan:
t.Errorf("Expected no response, but got a response")
case <-time.After(time.Millisecond):
}
}
func TestSendRequestTimeout(t *testing.T) {
server := newMockWSServer(
onMessageHanler(func(_ *websocket.Conn, _ websocket.MessageType, _ []byte) {
time.Sleep(time.Second)
}),
)
defer server.Close()
url := "ws://" + server.Listener.Addr().String()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com")
ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond)
reqID := 1
req := schema.Ping{Ping: 1, ReqId: &reqID}
defer cancel()
var resp schema.PingResp
err := api.SendRequest(ctx, reqID, req, &resp)
if err != context.DeadlineExceeded {
t.Errorf("Expected timeout error, got %v", err)
}
}
func TestSendRequestAndGotInvalidJSON(t *testing.T) {
testResp := `{Corrupted JSON}`
server := newMockWSServer(
onMessageHanler(func(ws *websocket.Conn, _ websocket.MessageType, _ []byte) {
err := ws.Write(context.Background(), websocket.MessageText, []byte(testResp))
if err != nil {
return
}
time.Sleep(time.Second) // to keep the connection open
}))
defer server.Close()
url := "ws://" + server.Listener.Addr().String()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com")
err := api.Connect()
if err != nil {
t.Errorf("Failed to connect to mocked WebSocket server: %v", err)
}
ctx := context.Background()
respChan, err := api.Send(ctx, 2, struct {
ReqID int `json:"req_id"`
}{1})
if err != nil {
t.Errorf("Failed to send message: %v", err)
}
select {
case _, ok := <-respChan:
if ok {
t.Errorf("Expected no response, but got a response")
}
case <-time.After(time.Millisecond):
}
}
func TestSendRequest(t *testing.T) {
testResp := `{
"echo_req": {
"ping": 1,
"req_id": 1
},
"msg_type": "ping",
"ping": "pong",
"req_id": 1
}`
server := newMockWSServer(
onMessageHanler(func(ws *websocket.Conn, _ websocket.MessageType, _ []byte) {
err := ws.Write(context.Background(), websocket.MessageText, []byte(testResp))
if err != nil {
return
}
time.Sleep(time.Second) // to keep the connection open
}))
defer server.Close()
url := "ws://" + server.Listener.Addr().String()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com")
err := api.Connect()
if err != nil {
t.Errorf("Failed to connect to mocked WebSocket server: %v", err)
}
reqID := 1
req := schema.Ping{Ping: 1, ReqId: &reqID}
ctx := context.Background()
var resp schema.PingResp
err = api.SendRequest(ctx, reqID, req, &resp)
if err != nil {
t.Errorf("Failed to send message: %v", err)
}
if *resp.Ping != "pong" {
t.Errorf("Expected response to be pong, but got %s", *resp.Ping)
}
}
func TestSendRequestFailed(t *testing.T) {
server := newMockWSServer(
onMessageHanler(func(ws *websocket.Conn, _ websocket.MessageType, _ []byte) {
err := ws.Write(context.Background(), websocket.MessageText, []byte(""))
if err != nil {
return
}
time.Sleep(time.Second) // to keep the connection open
}))
url := "ws://" + server.Listener.Addr().String()
server.Close()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com")
reqID := 1
req := schema.Ping{Ping: 1, ReqId: &reqID}
ctx := context.Background()
var resp schema.PingResp
err := api.SendRequest(ctx, reqID, req, &resp)
if err == nil {
t.Errorf("Expected error, got nil")
}
}
func TestKeepConnectionAlive(t *testing.T) {
resChan := make(chan string)
testResp := `{
"echo_req": {
"ping": 1,
"req_id": 1
},
"msg_type": "ping",
"ping": "pong",
"req_id": 1
}`
server := newMockWSServer(
onMessageHanler(func(ws *websocket.Conn, _ websocket.MessageType, msg []byte) {
resChan <- string(msg)
err := ws.Write(context.Background(), websocket.MessageText, []byte(testResp))
if err != nil {
return
}
time.Sleep(time.Second) // to keep the connection open
}))
url := "ws://" + server.Listener.Addr().String()
defer server.Close()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com", KeepAlive)
api.keepAliveInterval = time.Millisecond
if err := api.Connect(); err != nil {
t.Errorf("Failed to connect to mocked WebSocket server: %v", err)
}
select {
case msg := <-resChan:
if msg == "" {
t.Errorf("Expected to receive ping request, but got nothing")
}
case <-time.After(time.Millisecond * 2):
t.Errorf("Expected to receive ping request, but got nothing")
}
api.Disconnect()
if err := api.Connect(); err != nil {
t.Errorf("Failed to connect to mocked WebSocket server: %v", err)
}
select {
case msg, ok := <-resChan:
if ok && msg != "" {
t.Errorf("Expected to not receive ping request, but got n%sn>", msg)
}
case <-time.After(time.Millisecond * 2):
}
}
func TestDebugLogs(t *testing.T) {
reader, writer, err := os.Pipe()
if err != nil {
t.Errorf("Failed to create pipe: %v", err)
}
defer reader.Close()
log.SetOutput(writer)
scanner := bufio.NewScanner(reader)
server := newMockWSServer(echoHandler)
url := "ws://" + server.Listener.Addr().String()
api, _ := NewDerivAPI(url, 123, "en", "http://example.com", Debug)
_ = api.Connect()
scanner.Scan()
got := scanner.Text()
want := "Connecting to " + url
if !strings.Contains(got, want) {
t.Errorf("Expected log to contain %s, but got %s", want, got)
}
}