err := mm.Migrator.AlterColumn(dst, field)
	if err != nil {
		return err
	}
	return fmt.Errorf("trigger alter column error, field: %s", field)
}

func TestMigrateDonotAlterColumn(t *testing.T) {
	wrapMockMigrator := func(m gorm.Migrator) mockMigrator {
		return mockMigrator{
			Migrator: m,
		}
	}
	m := DB.Migrator()
	mockM := wrapMockMigrator(m)