From 1f3ce610b9cb5e8f8887becb367d6302d588d924 Mon Sep 17 00:00:00 2001
From: QiuSW <105186638@qq.com>
Date: Wed, 30 Sep 2026 10:02:32 +0800
Subject: [PATCH] test(#352): verify additive source-time migration

---
 ...1789810000000_syb_stock_created_at_test.go | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 server/cmd/migrate/migration/version-local/1789810000000_syb_stock_created_at_test.go

diff --git a/server/cmd/migrate/migration/version-local/1789810000000_syb_stock_created_at_test.go b/server/cmd/migrate/migration/version-local/1789810000000_syb_stock_created_at_test.go
new file mode 100644
index 0000000..86b42a1
--- /dev/null
+++ b/server/cmd/migrate/migration/version-local/1789810000000_syb_stock_created_at_test.go
@@ -0,0 +1,43 @@
+package version_local
+
+import (
+	"testing"
+	"time"
+
+	"go-admin/app/goauto/models"
+	common "go-admin/common/models"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+func TestMigrateSYBStockCreatedAtPreservesLegacyRows(t *testing.T) {
+	db, err := gorm.Open(sqlite.Open("file:syb_stock_created_migration?mode=memory&cache=shared"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Exec("CREATE TABLE syb_product (id integer primary key, created_at datetime)").Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Exec("INSERT INTO syb_product (id, created_at) VALUES (1, '2026-09-28 00:05:00')").Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&common.Migration{}); err != nil {
+		t.Fatal(err)
+	}
+	if err := migrateSYBStockCreatedAt(db, "test_syb_stock_created_at"); err != nil {
+		t.Fatal(err)
+	}
+	if !db.Migrator().HasColumn(&models.SYBProduct{}, "SYBStockCreatedAt") || !db.Migrator().HasIndex(&models.SYBProduct{}, "SYBStockCreatedAt") {
+		t.Fatal("migration must add the source time column and index")
+	}
+	var row struct {
+		CreatedAt         time.Time
+		SYBStockCreatedAt *string
+	}
+	if err := db.Table("syb_product").Where("id = 1").Take(&row).Error; err != nil {
+		t.Fatal(err)
+	}
+	if row.CreatedAt.Format("2006-01-02 15:04:05") != "2026-09-28 00:05:00" || row.SYBStockCreatedAt != nil {
+		t.Fatalf("migration must preserve import time and leave source time unknown: %+v", row)
+	}
+}