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174 lines
3.9 KiB
174 lines
3.9 KiB
package rpcserver
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import (
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"encoding/json"
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"strconv"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/tendermint/go-wire/data"
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)
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func TestParseJSONMap(t *testing.T) {
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assert := assert.New(t)
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input := []byte(`{"value":"1234","height":22}`)
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// naive is float,string
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var p1 map[string]interface{}
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err := json.Unmarshal(input, &p1)
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if assert.Nil(err) {
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h, ok := p1["height"].(float64)
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if assert.True(ok, "%#v", p1["height"]) {
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assert.EqualValues(22, h)
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}
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v, ok := p1["value"].(string)
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if assert.True(ok, "%#v", p1["value"]) {
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assert.EqualValues("1234", v)
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}
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}
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// preloading map with values doesn't help
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tmp := 0
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p2 := map[string]interface{}{
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"value": &data.Bytes{},
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"height": &tmp,
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}
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err = json.Unmarshal(input, &p2)
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if assert.Nil(err) {
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h, ok := p2["height"].(float64)
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if assert.True(ok, "%#v", p2["height"]) {
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assert.EqualValues(22, h)
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}
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v, ok := p2["value"].(string)
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if assert.True(ok, "%#v", p2["value"]) {
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assert.EqualValues("1234", v)
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}
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}
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// preload here with *pointers* to the desired types
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// struct has unknown types, but hard-coded keys
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tmp = 0
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p3 := struct {
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Value interface{} `json:"value"`
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Height interface{} `json:"height"`
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}{
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Height: &tmp,
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Value: &data.Bytes{},
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}
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err = json.Unmarshal(input, &p3)
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if assert.Nil(err) {
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h, ok := p3.Height.(*int)
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if assert.True(ok, "%#v", p3.Height) {
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assert.Equal(22, *h)
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}
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v, ok := p3.Value.(*data.Bytes)
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if assert.True(ok, "%#v", p3.Value) {
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assert.EqualValues([]byte{0x12, 0x34}, *v)
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}
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}
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// simplest solution, but hard-coded
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p4 := struct {
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Value data.Bytes `json:"value"`
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Height int `json:"height"`
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}{}
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err = json.Unmarshal(input, &p4)
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if assert.Nil(err) {
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assert.EqualValues(22, p4.Height)
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assert.EqualValues([]byte{0x12, 0x34}, p4.Value)
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}
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// so, let's use this trick...
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// dynamic keys on map, and we can deserialize to the desired types
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var p5 map[string]*json.RawMessage
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err = json.Unmarshal(input, &p5)
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if assert.Nil(err) {
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var h int
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err = json.Unmarshal(*p5["height"], &h)
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if assert.Nil(err) {
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assert.Equal(22, h)
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}
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var v data.Bytes
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err = json.Unmarshal(*p5["value"], &v)
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if assert.Nil(err) {
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assert.Equal(data.Bytes{0x12, 0x34}, v)
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}
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}
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}
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func TestParseJSONArray(t *testing.T) {
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assert := assert.New(t)
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input := []byte(`["1234",22]`)
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// naive is float,string
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var p1 []interface{}
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err := json.Unmarshal(input, &p1)
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if assert.Nil(err) {
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v, ok := p1[0].(string)
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if assert.True(ok, "%#v", p1[0]) {
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assert.EqualValues("1234", v)
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}
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h, ok := p1[1].(float64)
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if assert.True(ok, "%#v", p1[1]) {
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assert.EqualValues(22, h)
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}
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}
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// preloading map with values helps here (unlike map - p2 above)
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tmp := 0
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p2 := []interface{}{&data.Bytes{}, &tmp}
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err = json.Unmarshal(input, &p2)
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if assert.Nil(err) {
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v, ok := p2[0].(*data.Bytes)
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if assert.True(ok, "%#v", p2[0]) {
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assert.EqualValues([]byte{0x12, 0x34}, *v)
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}
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h, ok := p2[1].(*int)
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if assert.True(ok, "%#v", p2[1]) {
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assert.EqualValues(22, *h)
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}
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}
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}
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func TestParseRPC(t *testing.T) {
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assert := assert.New(t)
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demo := func(height int, name string) {}
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call := NewRPCFunc(demo, "height,name")
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cases := []struct {
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raw string
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height int64
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name string
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fail bool
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}{
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// should parse
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{`[7, "flew"]`, 7, "flew", false},
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{`{"name": "john", "height": 22}`, 22, "john", false},
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// defaults
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{`{"name": "solo", "unused": "stuff"}`, 0, "solo", false},
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// should fail - wrong types/lenght
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{`["flew", 7]`, 0, "", true},
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{`[7,"flew",100]`, 0, "", true},
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{`{"name": -12, "height": "fred"}`, 0, "", true},
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}
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for idx, tc := range cases {
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i := strconv.Itoa(idx)
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data := []byte(tc.raw)
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vals, err := jsonParamsToArgs(call, data, 0)
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if tc.fail {
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assert.NotNil(err, i)
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} else {
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assert.Nil(err, "%s: %+v", i, err)
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if assert.Equal(2, len(vals), i) {
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assert.Equal(tc.height, vals[0].Int(), i)
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assert.Equal(tc.name, vals[1].String(), i)
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}
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}
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}
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}
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