mirror of
https://github.com/golang/go
synced 2024-11-18 12:44:49 -07:00
dcbf2a9ed1
The spec states error data may be omitted. It is currently always encoded as null, despite having no usage. Omit the field if empty, and add a test to prove the behaviour. Fixes golang/go#39736 Change-Id: Icdb39409010f3a42f84d2372c2061e4bc7cc198e Reviewed-on: https://go-review.googlesource.com/c/tools/+/239059 Reviewed-by: Ian Cottrell <iancottrell@google.com>
127 lines
2.6 KiB
Go
127 lines
2.6 KiB
Go
// Copyright 2020 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package jsonrpc2_test
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"testing"
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"golang.org/x/tools/internal/jsonrpc2"
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)
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var wireIDTestData = []struct {
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name string
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id jsonrpc2.ID
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encoded []byte
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plain string
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quoted string
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}{
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{
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name: `empty`,
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encoded: []byte(`0`),
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plain: `0`,
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quoted: `#0`,
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}, {
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name: `number`,
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id: jsonrpc2.NewIntID(43),
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encoded: []byte(`43`),
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plain: `43`,
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quoted: `#43`,
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}, {
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name: `string`,
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id: jsonrpc2.NewStringID("life"),
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encoded: []byte(`"life"`),
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plain: `life`,
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quoted: `"life"`,
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},
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}
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func TestIDFormat(t *testing.T) {
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for _, test := range wireIDTestData {
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t.Run(test.name, func(t *testing.T) {
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if got := fmt.Sprint(test.id); got != test.plain {
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t.Errorf("got %s expected %s", got, test.plain)
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}
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if got := fmt.Sprintf("%q", test.id); got != test.quoted {
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t.Errorf("got %s want %s", got, test.quoted)
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}
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})
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}
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}
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func TestIDEncode(t *testing.T) {
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for _, test := range wireIDTestData {
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t.Run(test.name, func(t *testing.T) {
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data, err := json.Marshal(&test.id)
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if err != nil {
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t.Fatal(err)
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}
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checkJSON(t, data, test.encoded)
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})
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}
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}
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func TestIDDecode(t *testing.T) {
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for _, test := range wireIDTestData {
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t.Run(test.name, func(t *testing.T) {
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var got *jsonrpc2.ID
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if err := json.Unmarshal(test.encoded, &got); err != nil {
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t.Fatal(err)
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}
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if got == nil {
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t.Errorf("got nil want %s", test.id)
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} else if *got != test.id {
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t.Errorf("got %s want %s", got, test.id)
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}
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})
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}
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}
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func TestErrorEncode(t *testing.T) {
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b, err := json.Marshal(jsonrpc2.NewError(0, ""))
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if err != nil {
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t.Fatal(err)
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}
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checkJSON(t, b, []byte(`{
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"code": 0,
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"message": ""
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}`))
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}
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func TestErrorResponse(t *testing.T) {
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// originally reported in #39719, this checks that result is not present if
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// it is an error response
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r, _ := jsonrpc2.NewResponse(jsonrpc2.NewIntID(3), nil, fmt.Errorf("computing fix edits"))
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data, err := json.Marshal(r)
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if err != nil {
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t.Fatal(err)
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}
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checkJSON(t, data, []byte(`{
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"jsonrpc":"2.0",
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"error":{
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"code":0,
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"message":"computing fix edits"
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},
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"id":3
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}`))
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}
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func checkJSON(t *testing.T, got, want []byte) {
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// compare the compact form, to allow for formatting differences
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g := &bytes.Buffer{}
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if err := json.Compact(g, []byte(got)); err != nil {
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t.Fatal(err)
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}
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w := &bytes.Buffer{}
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if err := json.Compact(w, []byte(want)); err != nil {
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t.Fatal(err)
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}
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if g.String() != w.String() {
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t.Fatalf("Got:\n%s\nWant:\n%s", g, w)
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}
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}
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