mirror of
https://github.com/octoleo/restic.git
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152 lines
3.7 KiB
Go
152 lines
3.7 KiB
Go
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// Copyright 2017 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build go1.7
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package trace
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import (
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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)
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type recorderTransport struct {
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ch chan *http.Request
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}
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func (rt *recorderTransport) RoundTrip(req *http.Request) (*http.Response, error) {
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rt.ch <- req
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resp := &http.Response{
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Status: "200 OK",
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StatusCode: 200,
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Body: ioutil.NopCloser(strings.NewReader("{}")),
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}
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return resp, nil
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}
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func TestNewHTTPClient(t *testing.T) {
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rt := &recorderTransport{
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ch: make(chan *http.Request, 1),
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}
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tc := newTestClient(&noopTransport{})
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client := &http.Client{
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Transport: &Transport{
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Base: rt,
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},
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}
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req, _ := http.NewRequest("GET", "http://example.com", nil)
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t.Run("NoTrace", func(t *testing.T) {
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_, err := client.Do(req)
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if err != nil {
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t.Error(err)
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}
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outgoing := <-rt.ch
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if got, want := outgoing.Header.Get(httpHeader), ""; want != got {
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t.Errorf("got trace header = %q; want none", got)
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}
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})
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t.Run("Trace", func(t *testing.T) {
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span := tc.NewSpan("/foo")
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req = req.WithContext(NewContext(req.Context(), span))
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_, err := client.Do(req)
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if err != nil {
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t.Error(err)
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}
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outgoing := <-rt.ch
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s := tc.SpanFromHeader("/foo", outgoing.Header.Get(httpHeader))
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if got, want := s.TraceID(), span.TraceID(); got != want {
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t.Errorf("trace ID = %q; want %q", got, want)
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}
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})
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}
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func TestHTTPHandlerNoTrace(t *testing.T) {
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tc := newTestClient(&noopTransport{})
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client := &http.Client{
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Transport: &Transport{},
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}
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handler := tc.HTTPHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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span := FromContext(r.Context())
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if span == nil {
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t.Errorf("span is nil; want non-nil span")
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}
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}))
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ts := httptest.NewServer(handler)
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defer ts.Close()
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req, _ := http.NewRequest("GET", ts.URL, nil)
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_, err := client.Do(req)
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if err != nil {
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t.Fatal(err)
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}
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}
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func TestHTTPHandler_response(t *testing.T) {
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tc := newTestClient(&noopTransport{})
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p, _ := NewLimitedSampler(1, 1<<32) // all
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tc.SetSamplingPolicy(p)
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handler := tc.HTTPHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
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ts := httptest.NewServer(handler)
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defer ts.Close()
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tests := []struct {
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name string
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traceHeader string
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wantTraceHeader string
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}{
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{
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name: "no global",
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traceHeader: "0123456789ABCDEF0123456789ABCDEF/123",
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wantTraceHeader: "0123456789ABCDEF0123456789ABCDEF/123;o=1",
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},
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{
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name: "global=1",
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traceHeader: "0123456789ABCDEF0123456789ABCDEF/123;o=1",
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wantTraceHeader: "",
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},
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{
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name: "global=0",
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traceHeader: "0123456789ABCDEF0123456789ABCDEF/123;o=0",
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wantTraceHeader: "",
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},
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{
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name: "no trace context",
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traceHeader: "",
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wantTraceHeader: "",
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},
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}
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for _, tt := range tests {
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req, _ := http.NewRequest("GET", ts.URL, nil)
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req.Header.Set(httpHeader, tt.traceHeader)
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res, err := http.DefaultClient.Do(req)
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if err != nil {
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t.Errorf("failed to request: %v", err)
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}
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if got, want := res.Header.Get(httpHeader), tt.wantTraceHeader; got != want {
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t.Errorf("%v: response context header = %q; want %q", tt.name, got, want)
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}
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}
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}
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