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package testfixtures
import (
"database/sql/driver"
"encoding/json"
)
var (
_ driver.Valuer = jsonArray{}
_ driver.Valuer = jsonMap{}
)
type jsonArray []interface{}
func (a jsonArray) Value() (driver.Value, error) {
return json.Marshal(a)
}
type jsonMap map[string]interface{}
func (m jsonMap) Value() (driver.Value, error) {
return json.Marshal(m)
}
// Go refuses to convert map[interface{}]interface{} to JSON because JSON only support string keys
// So it's necessary to recursively convert all map[interface]interface{} to map[string]interface{}
func recursiveToJSON(v interface{}) (r interface{}) {
switch v := v.(type) {
case []interface{}:
for i, e := range v {
v[i] = recursiveToJSON(e)
}
r = jsonArray(v)
case map[interface{}]interface{}:
newMap := make(map[string]interface{}, len(v))
for k, e := range v {
newMap[k.(string)] = recursiveToJSON(e)
}
r = jsonMap(newMap)
default:
r = v
}
return r
}
|
