net/http/httptest: updated example to use Result()

example for httptest.Recorder was inspecting Recoder directly. Using Result() to convert Recorder into a http.Response yields a much better user experience. Closes #16837 Change-Id: Id0e636c12cd6adb1ba11f89953ff2b0f43758cf3 Reviewed-on: https://go-review.googlesource.com/27495Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>

net/http/httptest: updated example to use Result()
example for httptest.Recorder was inspecting Recoder directly. Using Result() to convert Recorder into a http.Response yields a much better user experience. Closes #16837 Change-Id: Id0e636c12cd6adb1ba11f89953ff2b0f43758cf3 Reviewed-on: https://go-review.googlesource.com/27495Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
cd5ab979 · Dhaivat Pandit · Brad Fitzpatrick · 93b753f5 · cd5ab979 · cd5ab979
Commit cd5ab979 authored Aug 22, 2016 by Dhaivat Pandit Committed by Brad Fitzpatrick Aug 23, 2016
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Showing with 16 additions and 3 deletions

example_test.go src/net/http/httptest/example_test.go +13 -3

recorder.go src/net/http/httptest/recorder.go +3 -0

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--- a/src/net/http/httptest/example_test.go
+++ b/src/net/http/httptest/example_test.go
@@ -6,6 +6,7 @@ package httptest_test

 import (
 	"fmt"
+	"io"
 	"io/ioutil"
 	"log"
 	"net/http"
@@ -14,15 +15,24 @@ import (

 func ExampleResponseRecorder() {
 	handler := func(w http.ResponseWriter, r *http.Request) {
-		http.Error(w, "something failed", http.StatusInternalServerError)
+		io.WriteString(w, "<html><body>Hello World!</body></html>")
 	}

 	req := httptest.NewRequest("GET", "http://example.com/foo", nil)
 	w := httptest.NewRecorder()
 	handler(w, req)

-	fmt.Printf("%d - %s", w.Code, w.Body.String())
-	// Output: 500 - something failed
+	resp := w.Result()
+	body, _ := ioutil.ReadAll(resp.Body)
+
+	fmt.Println(resp.StatusCode)
+	fmt.Println(resp.Header.Get("Content-Type"))
+	fmt.Println(string(body))
+
+	// Output:
+	// 200
+	// text/html; charset=utf-8
+	// <html><body>Hello World!</body></html>
 }

 func ExampleServer() {

--- a/src/net/http/httptest/recorder.go
+++ b/src/net/http/httptest/recorder.go
@@ -136,6 +136,9 @@ func (rw *ResponseRecorder) Flush() {
 // first write call, or at the time of this call, if the handler never
 // did a write.
 //
+// The Response.Body is guaranteed to be non-nil and Body.Read call is
+// guaranteed to not return any error other than io.EOF.
+//
 // Result must only be called after the handler has finished running.
 func (rw *ResponseRecorder) Result() *http.Response {
 	if rw.result != nil {