type UniqueStruct8 struct { // unique and uniqueIndex
		Name string `gorm:"size:60;unique;index:my_us8_index,unique;"`
	}
	checkField(&UniqueStruct8{}, "name", true, "my_us8_index")

	type TestCase struct {
		name      string
		from, to  interface{}
		checkFunc func(t *testing.T)
	}

	checkColumnType := func(t *testing.T, fieldName string, unique bool) {