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// Copyright 2020 Northern.tech AS
//
// 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 requestid
import (
"net/http"
"net/http/httptest"
"testing"
"github.com/ant0ine/go-json-rest/rest"
"github.com/ant0ine/go-json-rest/rest/test"
"github.com/gin-gonic/gin"
"github.com/google/uuid"
"github.com/stretchr/testify/assert"
)
func init() {
gin.SetMode(gin.ReleaseMode) // please just shut up
}
func TestGinMiddleware(t *testing.T) {
t.Parallel()
testCases := []struct {
Name string
Options *MiddlewareOptions
Headers http.Header
}{{
Name: "Request with ID",
Headers: func() http.Header {
hdr := http.Header{}
hdr.Set(RequestIdHeader, "test")
return hdr
}(),
}, {
Name: "Request generated ID",
Options: NewMiddlewareOptions().
SetGenerateRequestID(true),
}}
for i := range testCases {
tc := testCases[i]
t.Run(tc.Name, func(t *testing.T) {
t.Parallel()
router := gin.New()
router.Use(Middleware(tc.Options))
router.GET("/test", func(c *gin.Context) {})
w := httptest.NewRecorder()
req, _ := http.NewRequest("GET", "http://mender.io/test", nil)
for k, v := range tc.Headers {
for _, vv := range v {
req.Header.Add(k, vv)
}
}
router.ServeHTTP(w, req)
rsp := w.Result()
if id := tc.Headers.Get(RequestIdHeader); id != "" {
rspID := rsp.Header.Get(RequestIdHeader)
assert.Equal(t, id, rspID)
} else {
if tc.Options.GenerateRequestID != nil &&
*tc.Options.GenerateRequestID {
_, err := uuid.Parse(rsp.Header.Get(RequestIdHeader))
assert.NoError(t, err, "Generated requestID is not a UUID")
} else {
assert.Empty(t, rsp.Header.Get(RequestIdHeader))
}
}
})
}
}
func TestRequestIdMiddlewareWithReqID(t *testing.T) {
api := rest.NewApi()
api.Use(&RequestIdMiddleware{})
reqid := "4420a5b9-dbf2-4e5d-8b4f-3cf2013d04af"
api.SetApp(rest.AppSimple(func(w rest.ResponseWriter, r *rest.Request) {
assert.Equal(t, reqid, FromContext(r.Context()))
w.WriteJson(map[string]string{"foo": "bar"})
}))
handler := api.MakeHandler()
req := test.MakeSimpleRequest("GET", "http://localhost/", nil)
req.Header.Set(RequestIdHeader, reqid)
recorded := test.RunRequest(t, handler, req)
recorded.CodeIs(200)
recorded.ContentTypeIsJson()
recorded.HeaderIs(RequestIdHeader, reqid)
}
func TestRequestIdMiddlewareNoReqID(t *testing.T) {
api := rest.NewApi()
api.Use(&RequestIdMiddleware{})
api.SetApp(rest.AppSimple(func(w rest.ResponseWriter, r *rest.Request) {
reqid := FromContext(r.Context())
_, err := uuid.Parse(reqid)
assert.NoError(t, err)
w.WriteJson(map[string]string{"foo": "bar"})
}))
handler := api.MakeHandler()
req := test.MakeSimpleRequest("GET", "http://localhost/", nil)
recorded := test.RunRequest(t, handler, req)
recorded.CodeIs(200)
recorded.ContentTypeIsJson()
outReqIdStr := recorded.Recorder.HeaderMap.Get(RequestIdHeader)
_, err := uuid.Parse(outReqIdStr)
assert.NoError(t, err)
}
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