fix: use wrapped context's err when <-ctx.Done() case is executed

CHANGELOG.md

@@ -14,6 +14,8 @@ Versioning](http://semver.org/spec/v2.0.0.html) except to the first release.
 
 ### Fixed
 
+- Use wrapped context err when <-ctx.Done() case is executed
+
 ## [v2.4.0] - 2025-07-11
 
 This release focuses on adding schema/user/session operations, synchronous transaction

connection.go

@@ -984,7 +984,10 @@ func (conn *Connection) newFuture(req Request) (fut *Future) {
 	if ctx != nil {
 		select {
 		case <-ctx.Done():
-			fut.SetError(fmt.Errorf("context is done (request ID %d)", fut.requestId))
+			fut.SetError(fmt.Errorf(
+				"context is done (request ID %d): %w",
+				fut.requestId, context.Cause(ctx),
+			))
 			shard.rmut.Unlock()
 			return
 		default:
@@ -1026,7 +1029,10 @@ func (conn *Connection) contextWatchdog(fut *Future, ctx context.Context) {
 	case <-fut.done:
 		return
 	default:
-		conn.cancelFuture(fut, fmt.Errorf("context is done (request ID %d)", fut.requestId))
+		conn.cancelFuture(fut, fmt.Errorf(
+			"context is done (request ID %d): %w",
+			fut.requestId, context.Cause(ctx),
+		))
 	}
 }
 

example_test.go

@@ -16,7 +16,7 @@ import (
 type Tuple struct {
 	// Instruct msgpack to pack this struct as array, so no custom packer
 	// is needed.
-	_msgpack struct{} `msgpack:",asArray"` //nolint: structcheck,unused
+	_msgpack struct{} `msgpack:",asArray"` // nolint: structcheck,unused
 	Id       uint
 	Msg      string
 	Name     string
@@ -167,7 +167,7 @@ func ExamplePingRequest_Context() {
 	fmt.Println("Ping Error", regexp.MustCompile("[0-9]+").ReplaceAllString(err.Error(), "N"))
 	// Output:
 	// Ping Resp data []
-	// Ping Error context is done (request ID N)
+	// Ping Error context is done (request ID N): context deadline exceeded
 }
 
 func ExampleSelectRequest() {

tarantool_test.go

@@ -48,7 +48,7 @@ type Member struct {
 	Val   uint
 }
 
-var contextDoneErrRegexp = regexp.MustCompile(`^context is done \(request ID [0-9]+\)$`)
+var contextDoneErrRegexp = regexp.MustCompile(`^context is done \(request ID [0-9]+\):.+$`)
 
 func (m *Member) EncodeMsgpack(e *msgpack.Encoder) error {
 	if err := e.EncodeArrayLen(2); err != nil {
@@ -89,8 +89,8 @@ var indexNo = uint32(0)
 var indexName = "primary"
 var opts = Opts{
 	Timeout: 5 * time.Second,
-	//Concurrency: 32,
-	//RateLimit: 4*1024,
+	// Concurrency: 32,
+	// RateLimit: 4*1024,
 }
 
 const N = 500
@@ -888,7 +888,7 @@ func TestFutureMultipleGetTypedWithError(t *testing.T) {
 	}
 }
 
-///////////////////
+// /////////////////
 
 func TestClient(t *testing.T) {
 	var err error
@@ -2716,7 +2716,7 @@ func TestCallRequest(t *testing.T) {
 func TestClientRequestObjectsWithNilContext(t *testing.T) {
 	conn := test_helpers.ConnectWithValidation(t, dialer, opts)
 	defer conn.Close()
-	req := NewPingRequest().Context(nil) //nolint
+	req := NewPingRequest().Context(nil) // nolint
 	data, err := conn.Do(req).Get()
 	if err != nil {
 		t.Fatalf("Failed to Ping: %s", err)
@@ -3269,7 +3269,7 @@ func TestClientIdRequestObjectWithNilContext(t *testing.T) {
 	req := NewIdRequest(ProtocolInfo{
 		Version:  ProtocolVersion(1),
 		Features: []iproto.Feature{iproto.IPROTO_FEATURE_STREAMS},
-	}).Context(nil) //nolint
+	}).Context(nil) // nolint
 	data, err := conn.Do(req).Get()
 	require.Nilf(t, err, "No errors on Id request execution")
 	require.NotNilf(t, data, "Response data not empty")
@@ -3293,7 +3293,7 @@ func TestClientIdRequestObjectWithPassedCanceledContext(t *testing.T) {
 	req := NewIdRequest(ProtocolInfo{
 		Version:  ProtocolVersion(1),
 		Features: []iproto.Feature{iproto.IPROTO_FEATURE_STREAMS},
-	}).Context(ctx) //nolint
+	}).Context(ctx) // nolint
 	cancel()
 	resp, err := conn.Do(req).Get()
 	require.Nilf(t, resp, "Response is empty")