fix(test): stabilize sub2api callback flow in ci

.gitea/workflows/ci.yml

@@ -39,12 +39,12 @@ jobs:
       - name: Run unit and integration tests
         run: |
           cd "$WORKSPACE_DIR"
-          go test ./... -count=1
+          go test ./... -count=1 -p 1
 
       - name: Run race tests
         run: |
           cd "$WORKSPACE_DIR"
-          go test -race ./...
+          go test -race ./... -p 1
 
       - name: Run vet
         run: |

test/e2e/sub2api_callback_flow_test.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"database/sql"
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"sync"
@@ -41,6 +42,27 @@ func openE2EPlatformDB(t *testing.T) *sql.DB {
 	return db
 }
 
+func resetE2EPlatformDB(t *testing.T, db *sql.DB) {
+	t.Helper()
+	if db == nil {
+		t.Fatal("db is nil")
+	}
+	if _, err := db.ExecContext(context.Background(), `
+		TRUNCATE TABLE
+			cs_platform_event_dead_letters,
+			cs_platform_event_delivery_attempts,
+			cs_platform_event_outbox,
+			cs_message_dedup,
+			cs_messages,
+			cs_tickets,
+			cs_audit_logs,
+			cs_sessions
+		RESTART IDENTITY CASCADE
+	`); err != nil {
+		t.Fatalf("reset e2e postgres state failed: %v", err)
+	}
+}
+
 func newSub2APIE2EApp(t *testing.T, callbackURL string, callbackSecret string, maxRetries int) *app.App {
 	t.Helper()
 	cfg := &config.Config{}
@@ -69,6 +91,9 @@ func newSub2APIE2EApp(t *testing.T, callbackURL string, callbackSecret string, m
 	cfg.PlatformAdapters.Sub2API.CallbackSecret = callbackSecret
 	cfg.PlatformAdapters.Sub2API.CallbackTimeoutMS = 2000
 	cfg.PlatformAdapters.Sub2API.CallbackMaxRetries = maxRetries
+	cfg.PlatformAdapters.Sub2API.CallbackPollIntervalMS = 200
+	cfg.PlatformAdapters.Sub2API.CallbackBatchSize = 8
+	cfg.PlatformAdapters.Sub2API.CallbackRetrySchedule = []int{1, 2, 5}
 
 	application, err := app.New(cfg, logging.New())
 	if err != nil {
@@ -92,9 +117,38 @@ func eventually(t *testing.T, timeout time.Duration, fn func() bool) {
 	t.Fatal("condition not satisfied before timeout")
 }
 
+func waitForSessionEvents(t *testing.T, timeout time.Duration, mu *sync.Mutex, received *[]platformevent.Event, sessionID string, want int) []platformevent.Event {
+	t.Helper()
+	deadline := time.Now().Add(timeout)
+	for time.Now().Before(deadline) {
+		mu.Lock()
+		filtered := make([]platformevent.Event, 0, len(*received))
+		for _, event := range *received {
+			if event.SessionID == sessionID {
+				filtered = append(filtered, event)
+			}
+		}
+		mu.Unlock()
+		if len(filtered) == want {
+			return filtered
+		}
+		time.Sleep(200 * time.Millisecond)
+	}
+
+	mu.Lock()
+	defer mu.Unlock()
+	snapshot := make([]string, 0, len(*received))
+	for _, event := range *received {
+		snapshot = append(snapshot, fmt.Sprintf("%s/%s", event.SessionID, event.EventType))
+	}
+	t.Fatalf("session %s received %d events, want %d; snapshot=%v", sessionID, len(snapshot), want, snapshot)
+	return nil
+}
+
 func TestSub2APICallbackFlow_ShouldDeliverOrderedEventsWithStableEventIDs(t *testing.T) {
 	db := openE2EPlatformDB(t)
 	defer db.Close()
+	resetE2EPlatformDB(t, db)
 
 	var (
 		mu       sync.Mutex
@@ -152,26 +206,7 @@ func TestSub2APICallbackFlow_ShouldDeliverOrderedEventsWithStableEventIDs(t *tes
 		t.Fatalf("ack session_id = %v, want non-empty", ack["session_id"])
 	}
 
-	eventually(t, 8*time.Second, func() bool {
-		mu.Lock()
-		defer mu.Unlock()
-		count := 0
-		for _, event := range received {
-			if event.SessionID == sessionID {
-				count++
-			}
-		}
-		return count == 6
-	})
-
-	mu.Lock()
-	defer mu.Unlock()
-	filtered := make([]platformevent.Event, 0, 6)
-	for _, event := range received {
-		if event.SessionID == sessionID {
-			filtered = append(filtered, event)
-		}
-	}
+	filtered := waitForSessionEvents(t, 8*time.Second, &mu, &received, sessionID, 6)
 	wantTypes := []string{
 		platformevent.TypeMessageReceived,
 		platformevent.TypeMessageProcessing,
@@ -195,23 +230,25 @@ func TestSub2APICallbackFlow_ShouldDeliverOrderedEventsWithStableEventIDs(t *tes
 	}
 
 	var deliveredCount int
-	if err := db.QueryRowContext(context.Background(), `
-		SELECT COUNT(1)
-		FROM cs_platform_event_outbox
-		WHERE platform = 'sub2api' AND status = 'delivered' AND session_id IN (
-			SELECT id FROM cs_sessions WHERE channel = 'sub2api' AND open_id = $1
-		)
-	`, openID).Scan(&deliveredCount); err != nil {
-		t.Fatalf("query delivered count failed: %v", err)
-	}
-	if deliveredCount != 6 {
-		t.Fatalf("delivered count = %d, want 6", deliveredCount)
-	}
+	eventually(t, 8*time.Second, func() bool {
+		err := db.QueryRowContext(context.Background(), `
+			SELECT COUNT(1)
+			FROM cs_platform_event_outbox
+			WHERE platform = 'sub2api' AND status = 'delivered' AND session_id IN (
+				SELECT id FROM cs_sessions WHERE channel = 'sub2api' AND open_id = $1
+			)
+		`, openID).Scan(&deliveredCount)
+		if err != nil {
+			t.Fatalf("query delivered count failed: %v", err)
+		}
+		return deliveredCount == 6
+	})
 }
 
 func TestSub2APICallbackFlow_ShouldDeadLetterAfterMaxRetries(t *testing.T) {
 	db := openE2EPlatformDB(t)
 	defer db.Close()
+	resetE2EPlatformDB(t, db)
 
 	callbackServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
 		w.WriteHeader(http.StatusBadGateway)