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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Tests for client.go
package http_test
import (
"crypto/tls"
"errors"
"fmt"
"io"
"io/ioutil"
"net"
. "net/http"
"net/http/httptest"
"net/url"
"strconv"
"strings"
"sync"
"testing"
)
var robotsTxtHandler = HandlerFunc(func(w ResponseWriter, r *Request) {
w.Header().Set("Last-Modified", "sometime")
fmt.Fprintf(w, "User-agent: go\nDisallow: /something/")
})
// pedanticReadAll works like ioutil.ReadAll but additionally
// verifies that r obeys the documented io.Reader contract.
func pedanticReadAll(r io.Reader) (b []byte, err error) {
var bufa [64]byte
buf := bufa[:]
for {
n, err := r.Read(buf)
if n == 0 && err == nil {
return nil, fmt.Errorf("Read: n=0 with err=nil")
}
b = append(b, buf[:n]...)
if err == io.EOF {
n, err := r.Read(buf)
if n != 0 || err != io.EOF {
return nil, fmt.Errorf("Read: n=%d err=%#v after EOF", n, err)
}
return b, nil
}
if err != nil {
return b, err
}
}
panic("unreachable")
}
func TestClient(t *testing.T) {
ts := httptest.NewServer(robotsTxtHandler)
defer ts.Close()
r, err := Get(ts.URL)
var b []byte
if err == nil {
b, err = pedanticReadAll(r.Body)
r.Body.Close()
}
if err != nil {
t.Error(err)
} else if s := string(b); !strings.HasPrefix(s, "User-agent:") {
t.Errorf("Incorrect page body (did not begin with User-agent): %q", s)
}
}
func TestClientHead(t *testing.T) {
ts := httptest.NewServer(robotsTxtHandler)
defer ts.Close()
r, err := Head(ts.URL)
if err != nil {
t.Fatal(err)
}
if _, ok := r.Header["Last-Modified"]; !ok {
t.Error("Last-Modified header not found.")
}
}
type recordingTransport struct {
req *Request
}
func (t *recordingTransport) RoundTrip(req *Request) (resp *Response, err error) {
t.req = req
return nil, errors.New("dummy impl")
}
func TestGetRequestFormat(t *testing.T) {
tr := &recordingTransport{}
client := &Client{Transport: tr}
url := "http://dummy.faketld/"
client.Get(url) // Note: doesn't hit network
if tr.req.Method != "GET" {
t.Errorf("expected method %q; got %q", "GET", tr.req.Method)
}
if tr.req.URL.String() != url {
t.Errorf("expected URL %q; got %q", url, tr.req.URL.String())
}
if tr.req.Header == nil {
t.Errorf("expected non-nil request Header")
}
}
func TestPostRequestFormat(t *testing.T) {
tr := &recordingTransport{}
client := &Client{Transport: tr}
url := "http://dummy.faketld/"
json := `{"key":"value"}`
b := strings.NewReader(json)
client.Post(url, "application/json", b) // Note: doesn't hit network
if tr.req.Method != "POST" {
t.Errorf("got method %q, want %q", tr.req.Method, "POST")
}
if tr.req.URL.String() != url {
t.Errorf("got URL %q, want %q", tr.req.URL.String(), url)
}
if tr.req.Header == nil {
t.Fatalf("expected non-nil request Header")
}
if tr.req.Close {
t.Error("got Close true, want false")
}
if g, e := tr.req.ContentLength, int64(len(json)); g != e {
t.Errorf("got ContentLength %d, want %d", g, e)
}
}
func TestPostFormRequestFormat(t *testing.T) {
tr := &recordingTransport{}
client := &Client{Transport: tr}
urlStr := "http://dummy.faketld/"
form := make(url.Values)
form.Set("foo", "bar")
form.Add("foo", "bar2")
form.Set("bar", "baz")
client.PostForm(urlStr, form) // Note: doesn't hit network
if tr.req.Method != "POST" {
t.Errorf("got method %q, want %q", tr.req.Method, "POST")
}
if tr.req.URL.String() != urlStr {
t.Errorf("got URL %q, want %q", tr.req.URL.String(), urlStr)
}
if tr.req.Header == nil {
t.Fatalf("expected non-nil request Header")
}
if g, e := tr.req.Header.Get("Content-Type"), "application/x-www-form-urlencoded"; g != e {
t.Errorf("got Content-Type %q, want %q", g, e)
}
if tr.req.Close {
t.Error("got Close true, want false")
}
// Depending on map iteration, body can be either of these.
expectedBody := "foo=bar&foo=bar2&bar=baz"
expectedBody1 := "bar=baz&foo=bar&foo=bar2"
if g, e := tr.req.ContentLength, int64(len(expectedBody)); g != e {
t.Errorf("got ContentLength %d, want %d", g, e)
}
bodyb, err := ioutil.ReadAll(tr.req.Body)
if err != nil {
t.Fatalf("ReadAll on req.Body: %v", err)
}
if g := string(bodyb); g != expectedBody && g != expectedBody1 {
t.Errorf("got body %q, want %q or %q", g, expectedBody, expectedBody1)
}
}
func TestRedirects(t *testing.T) {
var ts *httptest.Server
ts = httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) {
n, _ := strconv.Atoi(r.FormValue("n"))
// Test Referer header. (7 is arbitrary position to test at)
if n == 7 {
if g, e := r.Referer(), ts.URL+"/?n=6"; e != g {
t.Errorf("on request ?n=7, expected referer of %q; got %q", e, g)
}
}
if n < 15 {
Redirect(w, r, fmt.Sprintf("/?n=%d", n+1), StatusFound)
return
}
fmt.Fprintf(w, "n=%d", n)
}))
defer ts.Close()
c := &Client{}
_, err := c.Get(ts.URL)
if e, g := "Get /?n=10: stopped after 10 redirects", fmt.Sprintf("%v", err); e != g {
t.Errorf("with default client Get, expected error %q, got %q", e, g)
}
// HEAD request should also have the ability to follow redirects.
_, err = c.Head(ts.URL)
if e, g := "Head /?n=10: stopped after 10 redirects", fmt.Sprintf("%v", err); e != g {
t.Errorf("with default client Head, expected error %q, got %q", e, g)
}
// Do should also follow redirects.
greq, _ := NewRequest("GET", ts.URL, nil)
_, err = c.Do(greq)
if e, g := "Get /?n=10: stopped after 10 redirects", fmt.Sprintf("%v", err); e != g {
t.Errorf("with default client Do, expected error %q, got %q", e, g)
}
var checkErr error
var lastVia []*Request
c = &Client{CheckRedirect: func(_ *Request, via []*Request) error {
lastVia = via
return checkErr
}}
res, err := c.Get(ts.URL)
finalUrl := res.Request.URL.String()
if e, g := "<nil>", fmt.Sprintf("%v", err); e != g {
t.Errorf("with custom client, expected error %q, got %q", e, g)
}
if !strings.HasSuffix(finalUrl, "/?n=15") {
t.Errorf("expected final url to end in /?n=15; got url %q", finalUrl)
}
if e, g := 15, len(lastVia); e != g {
t.Errorf("expected lastVia to have contained %d elements; got %d", e, g)
}
checkErr = errors.New("no redirects allowed")
res, err = c.Get(ts.URL)
finalUrl = res.Request.URL.String()
if e, g := "Get /?n=1: no redirects allowed", fmt.Sprintf("%v", err); e != g {
t.Errorf("with redirects forbidden, expected error %q, got %q", e, g)
}
}
var expectedCookies = []*Cookie{
&Cookie{Name: "ChocolateChip", Value: "tasty"},
&Cookie{Name: "First", Value: "Hit"},
&Cookie{Name: "Second", Value: "Hit"},
}
var echoCookiesRedirectHandler = HandlerFunc(func(w ResponseWriter, r *Request) {
for _, cookie := range r.Cookies() {
SetCookie(w, cookie)
}
if r.URL.Path == "/" {
SetCookie(w, expectedCookies[1])
Redirect(w, r, "/second", StatusMovedPermanently)
} else {
SetCookie(w, expectedCookies[2])
w.Write([]byte("hello"))
}
})
// Just enough correctness for our redirect tests. Uses the URL.Host as the
// scope of all cookies.
type TestJar struct {
m sync.Mutex
perURL map[string][]*Cookie
}
func (j *TestJar) SetCookies(u *url.URL, cookies []*Cookie) {
j.m.Lock()
defer j.m.Unlock()
j.perURL[u.Host] = cookies
}
func (j *TestJar) Cookies(u *url.URL) []*Cookie {
j.m.Lock()
defer j.m.Unlock()
return j.perURL[u.Host]
}
func TestRedirectCookiesOnRequest(t *testing.T) {
var ts *httptest.Server
ts = httptest.NewServer(echoCookiesRedirectHandler)
defer ts.Close()
c := &Client{}
req, _ := NewRequest("GET", ts.URL, nil)
req.AddCookie(expectedCookies[0])
// TODO: Uncomment when an implementation of a RFC6265 cookie jar lands.
_ = c
// resp, _ := c.Do(req)
// matchReturnedCookies(t, expectedCookies, resp.Cookies())
req, _ = NewRequest("GET", ts.URL, nil)
// resp, _ = c.Do(req)
// matchReturnedCookies(t, expectedCookies[1:], resp.Cookies())
}
func TestRedirectCookiesJar(t *testing.T) {
var ts *httptest.Server
ts = httptest.NewServer(echoCookiesRedirectHandler)
defer ts.Close()
c := &Client{}
c.Jar = &TestJar{perURL: make(map[string][]*Cookie)}
u, _ := url.Parse(ts.URL)
c.Jar.SetCookies(u, []*Cookie{expectedCookies[0]})
resp, _ := c.Get(ts.URL)
matchReturnedCookies(t, expectedCookies, resp.Cookies())
}
func matchReturnedCookies(t *testing.T, expected, given []*Cookie) {
t.Logf("Received cookies: %v", given)
if len(given) != len(expected) {
t.Errorf("Expected %d cookies, got %d", len(expected), len(given))
}
for _, ec := range expected {
foundC := false
for _, c := range given {
if ec.Name == c.Name && ec.Value == c.Value {
foundC = true
break
}
}
if !foundC {
t.Errorf("Missing cookie %v", ec)
}
}
}
func TestStreamingGet(t *testing.T) {
say := make(chan string)
ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) {
w.(Flusher).Flush()
for str := range say {
w.Write([]byte(str))
w.(Flusher).Flush()
}
}))
defer ts.Close()
c := &Client{}
res, err := c.Get(ts.URL)
if err != nil {
t.Fatal(err)
}
var buf [10]byte
for _, str := range []string{"i", "am", "also", "known", "as", "comet"} {
say <- str
n, err := io.ReadFull(res.Body, buf[0:len(str)])
if err != nil {
t.Fatalf("ReadFull on %q: %v", str, err)
}
if n != len(str) {
t.Fatalf("Receiving %q, only read %d bytes", str, n)
}
got := string(buf[0:n])
if got != str {
t.Fatalf("Expected %q, got %q", str, got)
}
}
close(say)
_, err = io.ReadFull(res.Body, buf[0:1])
if err != io.EOF {
t.Fatalf("at end expected EOF, got %v", err)
}
}
type writeCountingConn struct {
net.Conn
count *int
}
func (c *writeCountingConn) Write(p []byte) (int, error) {
*c.count++
return c.Conn.Write(p)
}
// TestClientWrites verifies that client requests are buffered and we
// don't send a TCP packet per line of the http request + body.
func TestClientWrites(t *testing.T) {
ts := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) {
}))
defer ts.Close()
writes := 0
dialer := func(netz string, addr string) (net.Conn, error) {
c, err := net.Dial(netz, addr)
if err == nil {
c = &writeCountingConn{c, &writes}
}
return c, err
}
c := &Client{Transport: &Transport{Dial: dialer}}
_, err := c.Get(ts.URL)
if err != nil {
t.Fatal(err)
}
if writes != 1 {
t.Errorf("Get request did %d Write calls, want 1", writes)
}
writes = 0
_, err = c.PostForm(ts.URL, url.Values{"foo": {"bar"}})
if err != nil {
t.Fatal(err)
}
if writes != 1 {
t.Errorf("Post request did %d Write calls, want 1", writes)
}
}
func TestClientInsecureTransport(t *testing.T) {
ts := httptest.NewTLSServer(HandlerFunc(func(w ResponseWriter, r *Request) {
w.Write([]byte("Hello"))
}))
defer ts.Close()
// TODO(bradfitz): add tests for skipping hostname checks too?
// would require a new cert for testing, and probably
// redundant with these tests.
for _, insecure := range []bool{true, false} {
tr := &Transport{
TLSClientConfig: &tls.Config{
InsecureSkipVerify: insecure,
},
}
c := &Client{Transport: tr}
_, err := c.Get(ts.URL)
if (err == nil) != insecure {
t.Errorf("insecure=%v: got unexpected err=%v", insecure, err)
}
}
}
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