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go/internal/jsonrpc2/wire_test.go
Ian Cottrell b854406a88 internal/jsonrpc2: make the wire structures private
The wire structures do not need to be public, and making them so might make it
harder to keep the package correct without breaking changes if the protocol
changes in the future.

Change-Id: I03a5618c63c9f7691183d4285f88a177ccdd3b35
Reviewed-on: https://go-review.googlesource.com/c/tools/+/227838
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-04-13 01:57:29 +00:00

110 lines
2.3 KiB
Go

// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package jsonrpc2_test
import (
"bytes"
"encoding/json"
"fmt"
"math"
"testing"
"golang.org/x/tools/internal/jsonrpc2"
)
var wireIDTestData = []struct {
name string
id *jsonrpc2.ID
encoded []byte
plain string
quoted string
}{
{
name: `nil`,
id: nil,
encoded: []byte(`null`),
plain: fmt.Sprintf(`%d`, int64(math.MaxInt64)),
quoted: fmt.Sprintf(`#%d`, int64(math.MaxInt64)),
}, {
name: `empty`,
id: &jsonrpc2.ID{},
encoded: []byte(`0`),
plain: `0`,
quoted: `#0`,
}, {
name: `number`,
id: jsonrpc2.NewIntID(43),
encoded: []byte(`43`),
plain: `43`,
quoted: `#43`,
}, {
name: `string`,
id: jsonrpc2.NewStringID("life"),
encoded: []byte(`"life"`),
plain: `life`,
quoted: `"life"`,
},
}
func TestIDFormat(t *testing.T) {
for _, test := range wireIDTestData {
t.Run(test.name, func(t *testing.T) {
if got := fmt.Sprint(test.id); got != test.plain {
t.Errorf("got %s expected %s", got, test.plain)
}
if got := fmt.Sprintf("%q", test.id); got != test.quoted {
t.Errorf("got %s want %s", got, test.quoted)
}
})
}
}
func TestIDEncode(t *testing.T) {
for _, test := range wireIDTestData {
t.Run(test.name, func(t *testing.T) {
data, err := json.Marshal(test.id)
if err != nil {
t.Fatal(err)
}
checkJSON(t, data, test.encoded)
})
}
}
func TestIDDecode(t *testing.T) {
for _, test := range wireIDTestData {
t.Run(test.name, func(t *testing.T) {
var got *jsonrpc2.ID
if err := json.Unmarshal(test.encoded, &got); err != nil {
t.Fatal(err)
}
if got == nil {
if test.id != nil {
t.Errorf("got nil want %s", test.id)
}
} else if test.id == nil {
t.Errorf("got %s want nil", got)
} else if *got != *test.id {
t.Errorf("got %s want %s", got, test.id)
}
})
}
}
func checkJSON(t *testing.T, got, want []byte) {
// compare the compact form, to allow for formatting differences
g := &bytes.Buffer{}
if err := json.Compact(g, []byte(got)); err != nil {
t.Fatal(err)
}
w := &bytes.Buffer{}
if err := json.Compact(w, []byte(want)); err != nil {
t.Fatal(err)
}
if g.String() != w.String() {
t.Fatalf("Got:\n%s\nWant:\n%s", g, w)
}
}