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package server
import (
"encoding/json"
"fmt"
"net/http"
"strconv"
"testing"
"github.com/stretchr/testify/assert"
"github.com/tendermint/tendermint/libs/bytes"
types "github.com/tendermint/tendermint/rpc/jsonrpc/types"
)
func TestParseJSONMap(t *testing.T) {
input := []byte(`{"value":"1234","height":22}`)
// naive is float,string
var p1 map[string]interface{}
err := json.Unmarshal(input, &p1)
if assert.Nil(t, err) {
h, ok := p1["height"].(float64)
if assert.True(t, ok, "%#v", p1["height"]) {
assert.EqualValues(t, 22, h)
}
v, ok := p1["value"].(string)
if assert.True(t, ok, "%#v", p1["value"]) {
assert.EqualValues(t, "1234", v)
}
}
// preloading map with values doesn't help
tmp := 0
p2 := map[string]interface{}{
"value": &bytes.HexBytes{},
"height": &tmp,
}
err = json.Unmarshal(input, &p2)
if assert.Nil(t, err) {
h, ok := p2["height"].(float64)
if assert.True(t, ok, "%#v", p2["height"]) {
assert.EqualValues(t, 22, h)
}
v, ok := p2["value"].(string)
if assert.True(t, ok, "%#v", p2["value"]) {
assert.EqualValues(t, "1234", v)
}
}
// preload here with *pointers* to the desired types
// struct has unknown types, but hard-coded keys
tmp = 0
p3 := struct {
Value interface{} `json:"value"`
Height interface{} `json:"height"`
}{
Height: &tmp,
Value: &bytes.HexBytes{},
}
err = json.Unmarshal(input, &p3)
if assert.Nil(t, err) {
h, ok := p3.Height.(*int)
if assert.True(t, ok, "%#v", p3.Height) {
assert.Equal(t, 22, *h)
}
v, ok := p3.Value.(*bytes.HexBytes)
if assert.True(t, ok, "%#v", p3.Value) {
assert.EqualValues(t, []byte{0x12, 0x34}, *v)
}
}
// simplest solution, but hard-coded
p4 := struct {
Value bytes.HexBytes `json:"value"`
Height int `json:"height"`
}{}
err = json.Unmarshal(input, &p4)
if assert.Nil(t, err) {
assert.EqualValues(t, 22, p4.Height)
assert.EqualValues(t, []byte{0x12, 0x34}, p4.Value)
}
// so, let's use this trick...
// dynamic keys on map, and we can deserialize to the desired types
var p5 map[string]*json.RawMessage
err = json.Unmarshal(input, &p5)
if assert.Nil(t, err) {
var h int
err = json.Unmarshal(*p5["height"], &h)
if assert.Nil(t, err) {
assert.Equal(t, 22, h)
}
var v bytes.HexBytes
err = json.Unmarshal(*p5["value"], &v)
if assert.Nil(t, err) {
assert.Equal(t, bytes.HexBytes{0x12, 0x34}, v)
}
}
}
func TestParseJSONArray(t *testing.T) {
input := []byte(`["1234",22]`)
// naive is float,string
var p1 []interface{}
err := json.Unmarshal(input, &p1)
if assert.Nil(t, err) {
v, ok := p1[0].(string)
if assert.True(t, ok, "%#v", p1[0]) {
assert.EqualValues(t, "1234", v)
}
h, ok := p1[1].(float64)
if assert.True(t, ok, "%#v", p1[1]) {
assert.EqualValues(t, 22, h)
}
}
// preloading map with values helps here (unlike map - p2 above)
tmp := 0
p2 := []interface{}{&bytes.HexBytes{}, &tmp}
err = json.Unmarshal(input, &p2)
if assert.Nil(t, err) {
v, ok := p2[0].(*bytes.HexBytes)
if assert.True(t, ok, "%#v", p2[0]) {
assert.EqualValues(t, []byte{0x12, 0x34}, *v)
}
h, ok := p2[1].(*int)
if assert.True(t, ok, "%#v", p2[1]) {
assert.EqualValues(t, 22, *h)
}
}
}
func TestParseJSONRPC(t *testing.T) {
demo := func(ctx *types.Context, height int, name string) {}
call := NewRPCFunc(demo, "height,name", false)
cases := []struct {
raw string
height int64
name string
fail bool
}{
// should parse
{`["7", "flew"]`, 7, "flew", false},
{`{"name": "john", "height": "22"}`, 22, "john", false},
// defaults
{`{"name": "solo", "unused": "stuff"}`, 0, "solo", false},
// should fail - wrong types/length
{`["flew", 7]`, 0, "", true},
{`[7,"flew",100]`, 0, "", true},
{`{"name": -12, "height": "fred"}`, 0, "", true},
}
for idx, tc := range cases {
i := strconv.Itoa(idx)
data := []byte(tc.raw)
vals, err := jsonParamsToArgs(call, data)
if tc.fail {
assert.NotNil(t, err, i)
} else {
assert.Nil(t, err, "%s: %+v", i, err)
if assert.Equal(t, 2, len(vals), i) {
assert.Equal(t, tc.height, vals[0].Int(), i)
assert.Equal(t, tc.name, vals[1].String(), i)
}
}
}
}
func TestParseURI(t *testing.T) {
demo := func(ctx *types.Context, height int, name string) {}
call := NewRPCFunc(demo, "height,name", false)
cases := []struct {
raw []string
height int64
name string
fail bool
}{
// can parse numbers unquoted and strings quoted
{[]string{"7", `"flew"`}, 7, "flew", false},
{[]string{"22", `"john"`}, 22, "john", false},
{[]string{"-10", `"bob"`}, -10, "bob", false},
// can parse numbers quoted, too
{[]string{`"7"`, `"flew"`}, 7, "flew", false},
{[]string{`"-10"`, `"bob"`}, -10, "bob", false},
// cant parse strings uquoted
{[]string{`"-10"`, `bob`}, -10, "bob", true},
}
for idx, tc := range cases {
i := strconv.Itoa(idx)
// data := []byte(tc.raw)
url := fmt.Sprintf(
"test.com/method?height=%v&name=%v",
tc.raw[0], tc.raw[1])
req, err := http.NewRequest("GET", url, nil)
assert.NoError(t, err)
vals, err := httpParamsToArgs(call, req)
if tc.fail {
assert.NotNil(t, err, i)
} else {
assert.Nil(t, err, "%s: %+v", i, err)
if assert.Equal(t, 2, len(vals), i) {
assert.Equal(t, tc.height, vals[0].Int(), i)
assert.Equal(t, tc.name, vals[1].String(), i)
}
}
}
}