panel — open-source game server manager (public release)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

controller/internal/db/migrate_test.go

@@ -0,0 +1,49 @@
+package db
+
+import (
+	"context"
+	"os"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+// TestMigrateConcurrent runs Migrate from two goroutines against a real
+// Postgres and asserts neither errors (the advisory lock serializes them;
+// the loser sees every version recorded and no-ops). Requires a live DB:
+// set PANEL_TEST_DSN to run, e.g.
+//
+//	PANEL_TEST_DSN=postgres://user:pw@localhost:5432/panel_test go test ./controller/internal/db/
+//
+// Skipped otherwise — no Postgres is assumed on dev machines or CI.
+func TestMigrateConcurrent(t *testing.T) {
+	dsn := os.Getenv("PANEL_TEST_DSN")
+	if dsn == "" {
+		t.Skip("PANEL_TEST_DSN not set; migration lock test needs a live Postgres")
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+	defer cancel()
+	pool, err := pgxpool.New(ctx, dsn)
+	if err != nil {
+		t.Fatalf("connect: %v", err)
+	}
+	defer pool.Close()
+
+	var wg sync.WaitGroup
+	errs := make([]error, 2)
+	for i := 0; i < 2; i++ {
+		wg.Add(1)
+		go func(i int) {
+			defer wg.Done()
+			errs[i] = Migrate(ctx, pool)
+		}(i)
+	}
+	wg.Wait()
+	for i, e := range errs {
+		if e != nil {
+			t.Errorf("concurrent Migrate %d: %v", i, e)
+		}
+	}
+}