func start(t *testing.T) (pinata.Stick, pinata.Pinata) {
const message = `
{
"Name": "Kevin",
"Phone": ["+44 20 7123 4567", "+44 20 4567 7123"],
"Address": {
"Street": "1 Gopher Road",
"City": null
},
"Hobbies": [
{
"Indoors": ["napping", "watching TV", "jumping up and down"],
"Outdoors": ["napping", "hiking", "petanque"]
}
]
}`
var m map[string]interface{}
err := json.Unmarshal([]byte(message), &m)
if err != nil {
t.Log(err)
return nil, pinata.Pinata{}
}
return pinata.New(m)
}
func ExampleStick() {
const message = `
{
"Name": "Kevin",
"Phone": ["+44 20 7123 4567", "+44 20 4567 7123"],
"Address": {
"Street": "1 Gopher Road",
"City": "Gophertown"
}
}`
var m map[string]interface{}
err := json.Unmarshal([]byte(message), &m)
if err != nil {
fmt.Println(err)
return
}
stick, p := pinata.New(m)
type gopher struct {
Name string
Phone string
City string
}
// no error handling here
kevin := gopher{
Name: stick.PathString(p, "Name"),
Phone: stick.IndexString(stick.Path(p, "Phone"), 0),
City: stick.PathString(p, "Address", "City"),
}
if err := stick.ClearError(); err != nil {
fmt.Println(err)
return
}
fmt.Println("Name:", kevin.Name)
fmt.Println("Phone:", kevin.Phone)
fmt.Println("City:", kevin.City)
// Output:
// Name: Kevin
// Phone: +44 20 7123 4567
// City: Gophertown
}
func TestFailureScenario(t *testing.T) {
const message = `
{
"Name": "Kevin",
"Phone": ["+44 20 7123 4567", "+44 20 4567 7123"],
"Address": {
"Street": "1 Gopher Road",
"City": "Gophertown"
}
}`
var m map[string]interface{}
{
err := json.Unmarshal([]byte(message), &m)
if err != nil {
fmt.Println(err)
return
}
}
stick, thePinata := pinata.New(m)
stick.IndexFloat64(stick.Path(thePinata, "Phone"), 1)
err := stick.ClearError()
if err == nil {
t.Error("phone must not be a float64")
return
}
pinataErr := err.(*pinata.Error)
if pinataErr.Reason() != pinata.ErrorReasonIncompatibleType {
t.Error("error reason must be incompatible type")
}
ctx, ok := pinataErr.Context()
if !ok {
t.Error("error must have a context")
}
if ctx.MethodName() != "IndexFloat64" {
t.Error("error method name must be IndexFloat64")
}
if len(ctx.MethodArgs()) != 1 {
t.Error("error method input must have one element")
}
if ctx.MethodArgs()[0] != 1 {
t.Error("error method input must be 1")
}
ctx2, ok2 := ctx.Next()
if !ok2 {
t.Error("error must have a linked context")
}
if ctx2.MethodName() != "Path" {
t.Error("error method name must be Path")
}
if len(ctx2.MethodArgs()) != 1 {
t.Error("error method input must have one element")
}
if ctx2.MethodArgs()[0] != "Phone" {
t.Error("error method input must be 1")
}
_, ok3 := ctx2.Next()
if ok3 {
t.Error("linked context must have no further linked contexts")
}
}