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// Copyright 2017 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package fn
import (
"bytes"
"context"
"encoding/json"
"errors"
"io"
"io/ioutil"
"mime/multipart"
"net/http"
"net/http/httptest"
"net/url"
"testing"
"github.com/stretchr/testify/require"
)
type testRequest struct {
Foo string `json:"foo"`
Bar int `json:"bar"`
}
type testResponse struct {
Code int `json:"code"`
Message string `json:"message"`
}
type testErrorResponse struct {
Code int `json:"code"`
Error string `json:"message"`
}
var successResponse = &testResponse{Message: "success"}
func init() {
Plugin(
func(ctx context.Context, request *http.Request) (context.Context, error) {
return context.WithValue(ctx, "global1", "globalvalue1"), nil
},
nil,
func(ctx context.Context, request *http.Request) (context.Context, error) {
return context.WithValue(ctx, "global2", "globalvalue2"), nil
})
}
// acceptable function signature
func withNone() (*testResponse, error) { return successResponse, nil }
func withBody(io.ReadCloser) (*testResponse, error) { return successResponse, nil }
func withReq(*testRequest) (*testResponse, error) { return successResponse, nil }
func withHeader(http.Header) (*testResponse, error) { return successResponse, nil }
func withForm(Form) (*testResponse, error) { return successResponse, nil }
func withPostForm(PostForm) (*testResponse, error) { return successResponse, nil }
func withFormPtr(*Form) (*testResponse, error) { return successResponse, nil }
func withPostFormPtr(*PostForm) (*testResponse, error) { return successResponse, nil }
func withMultipartForm(*multipart.Form) (*testResponse, error) { return successResponse, nil }
func withUrl(*url.URL) (*testResponse, error) { return successResponse, nil }
func withRawRequest(*http.Request) (*testResponse, error) { return successResponse, nil }
func withInContext(context.Context) (*testResponse, error) { return successResponse, nil }
func withInContextAndPayload(context.Context, *testRequest) (*testResponse, error) {
return successResponse, nil
}
func withMulti(*testRequest, Form, PostForm, http.Header, *url.URL) (*testResponse, error) {
return nil, nil
}
func withAll(io.ReadCloser, *testRequest, Form, PostForm, http.Header, *multipart.Form, *url.URL) (*testResponse, error) {
return nil, nil
}
func TestHandler(t *testing.T) {
Wrap(withNone)
Wrap(withBody)
Wrap(withReq)
Wrap(withHeader)
Wrap(withForm)
Wrap(withPostForm)
Wrap(withFormPtr)
Wrap(withPostFormPtr)
Wrap(withMultipartForm)
Wrap(withUrl)
Wrap(withRawRequest)
Wrap(withMulti)
Wrap(withAll)
Wrap(withInContext)
Wrap(withInContextAndPayload)
}
func TestPlugin(t *testing.T) {
logic := func(ctx context.Context) (*testResponse, error) {
require.Equal(t, "value", ctx.Value("key").(string))
require.Equal(t, "value2", ctx.Value("key2").(string))
return &testResponse{}, nil
}
plugin1 := func(ctx context.Context, request *http.Request) (context.Context, error) {
require.Equal(t, "globalvalue1", ctx.Value("global1").(string))
require.Equal(t, "globalvalue2", ctx.Value("global2").(string))
return context.WithValue(ctx, "key", "value"), nil
}
plugin2 := func(ctx context.Context, request *http.Request) (context.Context, error) {
require.Equal(t, "globalvalue1", ctx.Value("global1").(string))
require.Equal(t, "globalvalue2", ctx.Value("global2").(string))
require.Equal(t, "value", ctx.Value("key").(string))
return context.WithValue(ctx, "key2", "value2"), nil
}
handler := Wrap(logic).Plugin(plugin1, plugin2)
recorder := httptest.NewRecorder()
request, err := http.NewRequest(http.MethodGet, "", nil)
require.NoError(t, err)
handler.ServeHTTP(recorder, request)
}
func TestGroupPlugin(t *testing.T) {
group := NewGroup()
group.Plugin(func(ctx context.Context, request *http.Request) (context.Context, error) {
return context.WithValue(ctx, "key", "value"), nil
})
logic := func(ctx context.Context) (*testResponse, error) {
require.Equal(t, "value", ctx.Value("key").(string))
return &testResponse{}, nil
}
handler := group.Wrap(logic)
recorder := httptest.NewRecorder()
request, err := http.NewRequest(http.MethodGet, "", nil)
require.NoError(t, err)
handler.ServeHTTP(recorder, request)
}
func TestSetResponseEncoder(t *testing.T) {
handler := Wrap(func(ctx context.Context, request *http.Request) (context.Context, error) {
return context.TODO(), nil
})
testResp := &testResponse{
Code: 1,
Message: "msg",
}
SetResponseEncoder(func(ctx context.Context, payload interface{}) interface{} {
return testResp
})
recorder := httptest.NewRecorder()
request, err := http.NewRequest(http.MethodGet, "", nil)
require.NoError(t, err)
handler.ServeHTTP(recorder, request)
respMsg := &testResponse{}
_ = json.Unmarshal(recorder.Body.Bytes(), &respMsg)
require.Equal(t, testResp, respMsg)
}
func TestSetErrorEncoder(t *testing.T) {
handler := Wrap(func(ctx context.Context, request *http.Request) (context.Context, error) {
return nil, errors.New("")
})
testErrorResp := &testErrorResponse{
Code: -1,
Error: "something went wrong",
}
SetErrorEncoder(func(ctx context.Context, err error) interface{} {
return testErrorResp
})
recorder := httptest.NewRecorder()
request, err := http.NewRequest(http.MethodGet, "", nil)
require.NoError(t, err)
handler.ServeHTTP(recorder, request)
respMsg := &testErrorResponse{}
_ = json.Unmarshal(recorder.Body.Bytes(), &respMsg)
require.Equal(t, testErrorResp, respMsg)
}
func TestGenericAdapter_Invoke(t *testing.T) {
type CustomForm testRequest
handler := Wrap(func(ctx context.Context, form *CustomForm) (context.Context, error) {
return nil, nil
})
recorder := httptest.NewRecorder()
request, err := http.NewRequest(http.MethodGet, "", nil)
require.NoError(t, err)
payload := []byte(`{"for":"hello", "bar":10000}`)
request.Body = ioutil.NopCloser(bytes.NewBuffer(payload))
require.NoError(t, err)
handler.ServeHTTP(recorder, request)
}
func TestSimpleUnaryAdapter_Invoke(t *testing.T) {
handler := Wrap(withReq)
recorder := httptest.NewRecorder()
request, err := http.NewRequest(http.MethodGet, "", nil)
require.NoError(t, err)
payload := []byte(`{"for":"hello", "bar":10000}`)
request.Body = ioutil.NopCloser(bytes.NewBuffer(payload))
require.NoError(t, err)
handler.ServeHTTP(recorder, request)
}
func TestErrorWithStatusCode(t *testing.T) {
handler := Wrap(func(ctx context.Context, request *http.Request) (context.Context, error) {
return nil, ErrorWithStatusCode(errors.New("not found"), http.StatusNotFound)
})
recorder := httptest.NewRecorder()
request, err := http.NewRequest(http.MethodGet, "", nil)
require.NoError(t, err)
handler.ServeHTTP(recorder, request)
require.Equal(t, http.StatusNotFound, recorder.Code)
}
func BenchmarkSimplePlainAdapter_Invoke(b *testing.B) {
handler := Wrap(withNone)
request, err := http.NewRequest(http.MethodGet, "", nil)
if err != nil {
b.Fatal(err)
}
recorder := httptest.NewRecorder()
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
handler.ServeHTTP(recorder, request)
}
}
func BenchmarkSimpleUnaryAdapter_Invoke(b *testing.B) {
handler := Wrap(withReq)
request, err := http.NewRequest(http.MethodGet, "", nil)
if err != nil {
b.Fatal(err)
}
payload := []byte(`{"for":"hello", "bar":10000}`)
request.Body = ioutil.NopCloser(bytes.NewBuffer(payload))
recorder := httptest.NewRecorder()
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
handler.ServeHTTP(recorder, request)
}
}
func BenchmarkGenericAdapter_Invoke(b *testing.B) {
handler := Wrap(withMulti)
request, err := http.NewRequest(http.MethodGet, "", nil)
if err != nil {
b.Fatal(err)
}
payload := []byte(`{"for":"hello", "bar":10000}`)
request.Body = ioutil.NopCloser(bytes.NewBuffer(payload))
recorder := httptest.NewRecorder()
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
handler.ServeHTTP(recorder, request)
}
}
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