1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
// 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 (
"fmt"
. "http"
"http/httptest"
"io"
"io/ioutil"
"os"
"strconv"
"strings"
"testing"
)
var robotsTxtHandler = HandlerFunc(func(w ResponseWriter, r *Request) {
w.Header().Set("Last-Modified", "sometime")
fmt.Fprintf(w, "User-agent: go\nDisallow: /something/")
})
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 = ioutil.ReadAll(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 os.Error) {
t.req = req
return nil, os.NewError("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}
url := "http://dummy.faketld/"
form := make(Values)
form.Set("foo", "bar")
form.Add("foo", "bar2")
form.Set("bar", "baz")
client.PostForm(url, 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() != 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 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")
}
expectedBody := "foo=bar&foo=bar2&bar=baz"
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 {
t.Errorf("got body %q, want %q", g, expectedBody)
}
}
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 os.Error
var lastVia []*Request
c = &Client{CheckRedirect: func(_ *Request, via []*Request) os.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 = os.NewError("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)
}
}
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 != os.EOF {
t.Fatalf("at end expected EOF, got %v", err)
}
}
|
