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package gorm_test
import (
"database/sql/driver"
"encoding/json"
"errors"
"testing"
"github.com/jinzhu/gorm"
)
func TestScannableSlices(t *testing.T) {
if err := DB.AutoMigrate(&RecordWithSlice{}).Error; err != nil {
t.Errorf("Should create table with slice values correctly: %s", err)
}
r1 := RecordWithSlice{
Strings: ExampleStringSlice{"a", "b", "c"},
Structs: ExampleStructSlice{
{"name1", "value1"},
{"name2", "value2"},
},
}
if err := DB.Save(&r1).Error; err != nil {
t.Errorf("Should save record with slice values")
}
var r2 RecordWithSlice
if err := DB.Find(&r2).Error; err != nil {
t.Errorf("Should fetch record with slice values")
}
if len(r2.Strings) != 3 || r2.Strings[0] != "a" || r2.Strings[1] != "b" || r2.Strings[2] != "c" {
t.Errorf("Should have serialised and deserialised a string array")
}
if len(r2.Structs) != 2 || r2.Structs[0].Name != "name1" || r2.Structs[0].Value != "value1" || r2.Structs[1].Name != "name2" || r2.Structs[1].Value != "value2" {
t.Errorf("Should have serialised and deserialised a struct array")
}
}
type RecordWithSlice struct {
ID uint64
Strings ExampleStringSlice `sql:"type:text"`
Structs ExampleStructSlice `sql:"type:text"`
}
type ExampleStringSlice []string
func (l ExampleStringSlice) Value() (driver.Value, error) {
bytes, err := json.Marshal(l)
return string(bytes), err
}
func (l *ExampleStringSlice) Scan(input interface{}) error {
switch value := input.(type) {
case string:
return json.Unmarshal([]byte(value), l)
case []byte:
return json.Unmarshal(value, l)
default:
return errors.New("not supported")
}
}
type ExampleStruct struct {
Name string
Value string
}
type ExampleStructSlice []ExampleStruct
func (l ExampleStructSlice) Value() (driver.Value, error) {
bytes, err := json.Marshal(l)
return string(bytes), err
}
func (l *ExampleStructSlice) Scan(input interface{}) error {
switch value := input.(type) {
case string:
return json.Unmarshal([]byte(value), l)
case []byte:
return json.Unmarshal(value, l)
default:
return errors.New("not supported")
}
}
type ScannerDataType struct {
Street string `sql:"TYPE:varchar(24)"`
}
func (ScannerDataType) Value() (driver.Value, error) {
return nil, nil
}
func (*ScannerDataType) Scan(input interface{}) error {
return nil
}
type ScannerDataTypeTestStruct struct {
Field1 int
ScannerDataType *ScannerDataType `sql:"TYPE:json"`
}
type ScannerDataType2 struct {
Street string `sql:"TYPE:varchar(24)"`
}
func (ScannerDataType2) Value() (driver.Value, error) {
return nil, nil
}
func (*ScannerDataType2) Scan(input interface{}) error {
return nil
}
type ScannerDataTypeTestStruct2 struct {
Field1 int
ScannerDataType *ScannerDataType2
}
func TestScannerDataType(t *testing.T) {
scope := gorm.Scope{Value: &ScannerDataTypeTestStruct{}}
if field, ok := scope.FieldByName("ScannerDataType"); ok {
if DB.Dialect().DataTypeOf(field.StructField) != "json" {
t.Errorf("data type for scanner is wrong")
}
}
scope = gorm.Scope{Value: &ScannerDataTypeTestStruct2{}}
if field, ok := scope.FieldByName("ScannerDataType"); ok {
if DB.Dialect().DataTypeOf(field.StructField) != "varchar(24)" {
t.Errorf("data type for scanner is wrong")
}
}
}
|
