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// Copyright 2009 The Go Authors. All rights reserved.
// Copyright 2012 The Gorilla 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 rpc
import (
"net/http"
"strconv"
"testing"
)
type Service1Request struct {
A int
B int
}
type Service1Response struct {
Result int
}
type Service1 struct {
}
func (t *Service1) Multiply(r *http.Request, req *Service1Request, res *Service1Response) error {
res.Result = req.A * req.B
return nil
}
type Service2 struct {
}
func TestRegisterService(t *testing.T) {
var err error
s := NewServer()
service1 := new(Service1)
service2 := new(Service2)
// Inferred name.
err = s.RegisterService(service1, "")
if err != nil || !s.HasMethod("Service1.Multiply") {
t.Errorf("Expected to be registered: Service1.Multiply")
}
// Provided name.
err = s.RegisterService(service1, "Foo")
if err != nil || !s.HasMethod("Foo.Multiply") {
t.Errorf("Expected to be registered: Foo.Multiply")
}
// No methods.
err = s.RegisterService(service2, "")
if err == nil {
t.Errorf("Expected error on service2")
}
}
// MockCodec decodes to Service1.Multiply.
type MockCodec struct {
A, B int
}
func (c MockCodec) NewRequest(*http.Request) CodecRequest {
return MockCodecRequest{c.A, c.B}
}
type MockCodecRequest struct {
A, B int
}
func (r MockCodecRequest) Method() (string, error) {
return "Service1.Multiply", nil
}
func (r MockCodecRequest) ReadRequest(args interface{}) error {
req := args.(*Service1Request)
req.A, req.B = r.A, r.B
return nil
}
func (r MockCodecRequest) WriteResponse(w http.ResponseWriter, reply interface{}) {
res := reply.(*Service1Response)
w.Write([]byte(strconv.Itoa(res.Result)))
}
func (r MockCodecRequest) WriteError(w http.ResponseWriter, status int, err error) {
w.WriteHeader(status)
w.Write([]byte(err.Error()))
}
type MockResponseWriter struct {
header http.Header
Status int
Body string
}
func NewMockResponseWriter() *MockResponseWriter {
header := make(http.Header)
return &MockResponseWriter{header: header}
}
func (w *MockResponseWriter) Header() http.Header {
return w.header
}
func (w *MockResponseWriter) Write(p []byte) (int, error) {
w.Body = string(p)
if w.Status == 0 {
w.Status = 200
}
return len(p), nil
}
func (w *MockResponseWriter) WriteHeader(status int) {
w.Status = status
}
func TestServeHTTP(t *testing.T) {
const (
A = 2
B = 3
)
expected := A * B
s := NewServer()
s.RegisterService(new(Service1), "")
s.RegisterCodec(MockCodec{A, B}, "mock")
r, err := http.NewRequest("POST", "", nil)
if err != nil {
t.Fatal(err)
}
r.Header.Set("Content-Type", "mock; dummy")
w := NewMockResponseWriter()
s.ServeHTTP(w, r)
if w.Status != 200 {
t.Errorf("Status was %d, should be 200.", w.Status)
}
if w.Body != strconv.Itoa(expected) {
t.Errorf("Response body was %s, should be %s.", w.Body, strconv.Itoa(expected))
}
// Test wrong Content-Type
r.Header.Set("Content-Type", "invalid")
w = NewMockResponseWriter()
s.ServeHTTP(w, r)
if w.Status != 415 {
t.Errorf("Status was %d, should be 415.", w.Status)
}
if w.Body != "rpc: unrecognized Content-Type: invalid" {
t.Errorf("Wrong response body.")
}
// Test omitted Content-Type; codec should default to the sole registered one.
r.Header.Del("Content-Type")
w = NewMockResponseWriter()
s.ServeHTTP(w, r)
if w.Status != 200 {
t.Errorf("Status was %d, should be 200.", w.Status)
}
if w.Body != strconv.Itoa(expected) {
t.Errorf("Response body was %s, should be %s.", w.Body, strconv.Itoa(expected))
}
}
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