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
|
// Copyright 2011 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.
// This code is duplicated in net/http and net/http/httputil.
// Please make any changes in both files.
package httputil
import (
"bufio"
"bytes"
"fmt"
"io"
"io/ioutil"
"strings"
"testing"
)
func TestChunk(t *testing.T) {
var b bytes.Buffer
w := newChunkedWriter(&b)
const chunk1 = "hello, "
const chunk2 = "world! 0123456789abcdef"
w.Write([]byte(chunk1))
w.Write([]byte(chunk2))
w.Close()
if g, e := b.String(), "7\r\nhello, \r\n17\r\nworld! 0123456789abcdef\r\n0\r\n"; g != e {
t.Fatalf("chunk writer wrote %q; want %q", g, e)
}
r := newChunkedReader(&b)
data, err := ioutil.ReadAll(r)
if err != nil {
t.Logf(`data: "%s"`, data)
t.Fatalf("ReadAll from reader: %v", err)
}
if g, e := string(data), chunk1+chunk2; g != e {
t.Errorf("chunk reader read %q; want %q", g, e)
}
}
func TestChunkReadMultiple(t *testing.T) {
// Bunch of small chunks, all read together.
{
var b bytes.Buffer
w := newChunkedWriter(&b)
w.Write([]byte("foo"))
w.Write([]byte("bar"))
w.Close()
r := newChunkedReader(&b)
buf := make([]byte, 10)
n, err := r.Read(buf)
if n != 6 || err != io.EOF {
t.Errorf("Read = %d, %v; want 6, EOF", n, err)
}
buf = buf[:n]
if string(buf) != "foobar" {
t.Errorf("Read = %q; want %q", buf, "foobar")
}
}
// One big chunk followed by a little chunk, but the small bufio.Reader size
// should prevent the second chunk header from being read.
{
var b bytes.Buffer
w := newChunkedWriter(&b)
// fillBufChunk is 11 bytes + 3 bytes header + 2 bytes footer = 16 bytes,
// the same as the bufio ReaderSize below (the minimum), so even
// though we're going to try to Read with a buffer larger enough to also
// receive "foo", the second chunk header won't be read yet.
const fillBufChunk = "0123456789a"
const shortChunk = "foo"
w.Write([]byte(fillBufChunk))
w.Write([]byte(shortChunk))
w.Close()
r := newChunkedReader(bufio.NewReaderSize(&b, 16))
buf := make([]byte, len(fillBufChunk)+len(shortChunk))
n, err := r.Read(buf)
if n != len(fillBufChunk) || err != nil {
t.Errorf("Read = %d, %v; want %d, nil", n, err, len(fillBufChunk))
}
buf = buf[:n]
if string(buf) != fillBufChunk {
t.Errorf("Read = %q; want %q", buf, fillBufChunk)
}
n, err = r.Read(buf)
if n != len(shortChunk) || err != io.EOF {
t.Errorf("Read = %d, %v; want %d, EOF", n, err, len(shortChunk))
}
}
// And test that we see an EOF chunk, even though our buffer is already full:
{
r := newChunkedReader(bufio.NewReader(strings.NewReader("3\r\nfoo\r\n0\r\n")))
buf := make([]byte, 3)
n, err := r.Read(buf)
if n != 3 || err != io.EOF {
t.Errorf("Read = %d, %v; want 3, EOF", n, err)
}
if string(buf) != "foo" {
t.Errorf("buf = %q; want foo", buf)
}
}
}
func TestChunkReaderAllocs(t *testing.T) {
if testing.Short() {
t.Skip("skipping in short mode")
}
var buf bytes.Buffer
w := newChunkedWriter(&buf)
a, b, c := []byte("aaaaaa"), []byte("bbbbbbbbbbbb"), []byte("cccccccccccccccccccccccc")
w.Write(a)
w.Write(b)
w.Write(c)
w.Close()
readBuf := make([]byte, len(a)+len(b)+len(c)+1)
byter := bytes.NewReader(buf.Bytes())
bufr := bufio.NewReader(byter)
mallocs := testing.AllocsPerRun(100, func() {
byter.Seek(0, 0)
bufr.Reset(byter)
r := newChunkedReader(bufr)
n, err := io.ReadFull(r, readBuf)
if n != len(readBuf)-1 {
t.Fatalf("read %d bytes; want %d", n, len(readBuf)-1)
}
if err != io.ErrUnexpectedEOF {
t.Fatalf("read error = %v; want ErrUnexpectedEOF", err)
}
})
if mallocs > 1.5 {
t.Errorf("mallocs = %v; want 1", mallocs)
}
}
func TestParseHexUint(t *testing.T) {
for i := uint64(0); i <= 1234; i++ {
line := []byte(fmt.Sprintf("%x", i))
got, err := parseHexUint(line)
if err != nil {
t.Fatalf("on %d: %v", i, err)
}
if got != i {
t.Errorf("for input %q = %d; want %d", line, got, i)
}
}
_, err := parseHexUint([]byte("bogus"))
if err == nil {
t.Error("expected error on bogus input")
}
}
|
