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package testing
import (
"encoding/json"
"testing"
"github.com/gophercloud/gophercloud"
th "github.com/gophercloud/gophercloud/testhelper"
)
var singleResponse = `
{
"person": {
"name": "Bill",
"email": "bill@example.com",
"location": "Canada"
}
}
`
var multiResponse = `
{
"people": [
{
"name": "Bill",
"email": "bill@example.com",
"location": "Canada"
},
{
"name": "Ted",
"email": "ted@example.com",
"location": "Mexico"
}
]
}
`
type TestPerson struct {
Name string `json:"-"`
Email string `json:"email"`
}
func (r *TestPerson) UnmarshalJSON(b []byte) error {
type tmp TestPerson
var s struct {
tmp
Name string `json:"name"`
}
err := json.Unmarshal(b, &s)
if err != nil {
return err
}
*r = TestPerson(s.tmp)
r.Name = s.Name + " unmarshalled"
return nil
}
type TestPersonExt struct {
Location string `json:"-"`
}
func (r *TestPersonExt) UnmarshalJSON(b []byte) error {
type tmp TestPersonExt
var s struct {
tmp
Location string `json:"location"`
}
err := json.Unmarshal(b, &s)
if err != nil {
return err
}
*r = TestPersonExt(s.tmp)
r.Location = s.Location + " unmarshalled"
return nil
}
type TestPersonWithExtensions struct {
TestPerson
TestPersonExt
}
type TestPersonWithExtensionsNamed struct {
TestPerson TestPerson
TestPersonExt TestPersonExt
}
// TestUnmarshalAnonymousStruct tests if UnmarshalJSON is called on each
// of the anonymous structs contained in an overarching struct.
func TestUnmarshalAnonymousStructs(t *testing.T) {
var actual TestPersonWithExtensions
var dejson interface{}
sejson := []byte(singleResponse)
err := json.Unmarshal(sejson, &dejson)
if err != nil {
t.Fatal(err)
}
var singleResult = gophercloud.Result{
Body: dejson,
}
err = singleResult.ExtractIntoStructPtr(&actual, "person")
th.AssertNoErr(t, err)
th.AssertEquals(t, "Bill unmarshalled", actual.Name)
th.AssertEquals(t, "Canada unmarshalled", actual.Location)
}
// TestUnmarshalSliceofAnonymousStructs tests if UnmarshalJSON is called on each
// of the anonymous structs contained in an overarching struct slice.
func TestUnmarshalSliceOfAnonymousStructs(t *testing.T) {
var actual []TestPersonWithExtensions
var dejson interface{}
sejson := []byte(multiResponse)
err := json.Unmarshal(sejson, &dejson)
if err != nil {
t.Fatal(err)
}
var multiResult = gophercloud.Result{
Body: dejson,
}
err = multiResult.ExtractIntoSlicePtr(&actual, "people")
th.AssertNoErr(t, err)
th.AssertEquals(t, "Bill unmarshalled", actual[0].Name)
th.AssertEquals(t, "Canada unmarshalled", actual[0].Location)
th.AssertEquals(t, "Ted unmarshalled", actual[1].Name)
th.AssertEquals(t, "Mexico unmarshalled", actual[1].Location)
}
// TestUnmarshalSliceOfStruct tests if extracting results from a "normal"
// struct still works correctly.
func TestUnmarshalSliceofStruct(t *testing.T) {
var actual []TestPerson
var dejson interface{}
sejson := []byte(multiResponse)
err := json.Unmarshal(sejson, &dejson)
if err != nil {
t.Fatal(err)
}
var multiResult = gophercloud.Result{
Body: dejson,
}
err = multiResult.ExtractIntoSlicePtr(&actual, "people")
th.AssertNoErr(t, err)
th.AssertEquals(t, "Bill unmarshalled", actual[0].Name)
th.AssertEquals(t, "Ted unmarshalled", actual[1].Name)
}
// TestUnmarshalNamedStruct tests if the result is empty.
func TestUnmarshalNamedStructs(t *testing.T) {
var actual TestPersonWithExtensionsNamed
var dejson interface{}
sejson := []byte(singleResponse)
err := json.Unmarshal(sejson, &dejson)
if err != nil {
t.Fatal(err)
}
var singleResult = gophercloud.Result{
Body: dejson,
}
err = singleResult.ExtractIntoStructPtr(&actual, "person")
th.AssertNoErr(t, err)
th.AssertEquals(t, "", actual.TestPerson.Name)
th.AssertEquals(t, "", actual.TestPersonExt.Location)
}
// TestUnmarshalSliceofNamedStructs tests if the result is empty.
func TestUnmarshalSliceOfNamedStructs(t *testing.T) {
var actual []TestPersonWithExtensionsNamed
var dejson interface{}
sejson := []byte(multiResponse)
err := json.Unmarshal(sejson, &dejson)
if err != nil {
t.Fatal(err)
}
var multiResult = gophercloud.Result{
Body: dejson,
}
err = multiResult.ExtractIntoSlicePtr(&actual, "people")
th.AssertNoErr(t, err)
th.AssertEquals(t, "", actual[0].TestPerson.Name)
th.AssertEquals(t, "", actual[0].TestPersonExt.Location)
th.AssertEquals(t, "", actual[1].TestPerson.Name)
th.AssertEquals(t, "", actual[1].TestPersonExt.Location)
}
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