/usr/share/gocode/src/github.com/klauspost/compress/flate/inflate_test.go is in golang-github-klauspost-compress-dev 1.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | // Copyright 2014 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.
package flate
import (
"bytes"
"crypto/rand"
"io"
"io/ioutil"
"strconv"
"strings"
"testing"
)
func TestReset(t *testing.T) {
ss := []string{
"lorem ipsum izzle fo rizzle",
"the quick brown fox jumped over",
}
deflated := make([]bytes.Buffer, 2)
for i, s := range ss {
w, _ := NewWriter(&deflated[i], 1)
w.Write([]byte(s))
w.Close()
}
inflated := make([]bytes.Buffer, 2)
f := NewReader(&deflated[0])
io.Copy(&inflated[0], f)
f.(Resetter).Reset(&deflated[1], nil)
io.Copy(&inflated[1], f)
f.Close()
for i, s := range ss {
if s != inflated[i].String() {
t.Errorf("inflated[%d]:\ngot %q\nwant %q", i, inflated[i], s)
}
}
}
// Tests ported from zlib/test/infcover.c
type infTest struct {
hex string
id string
n int
}
var infTests = []infTest{
infTest{"0 0 0 0 0", "invalid stored block lengths", 1},
infTest{"3 0", "fixed", 0},
infTest{"6", "invalid block type", 1},
infTest{"1 1 0 fe ff 0", "stored", 0},
infTest{"fc 0 0", "too many length or distance symbols", 1},
infTest{"4 0 fe ff", "invalid code lengths set", 1},
infTest{"4 0 24 49 0", "invalid bit length repeat", 1},
infTest{"4 0 24 e9 ff ff", "invalid bit length repeat", 1},
infTest{"4 0 24 e9 ff 6d", "invalid code -- missing end-of-block", 1},
infTest{"4 80 49 92 24 49 92 24 71 ff ff 93 11 0", "invalid literal/lengths set", 1},
infTest{"4 80 49 92 24 49 92 24 f b4 ff ff c3 84", "invalid distances set", 1},
infTest{"4 c0 81 8 0 0 0 0 20 7f eb b 0 0", "invalid literal/length code", 1},
infTest{"2 7e ff ff", "invalid distance code", 1},
infTest{"c c0 81 0 0 0 0 0 90 ff 6b 4 0", "invalid distance too far back", 1},
// also trailer mismatch just in inflate()
infTest{"1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 1", "incorrect data check", -1},
infTest{"1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 1", "incorrect length check", -1},
infTest{"5 c0 21 d 0 0 0 80 b0 fe 6d 2f 91 6c", "pull 17", 0},
infTest{"5 e0 81 91 24 cb b2 2c 49 e2 f 2e 8b 9a 47 56 9f fb fe ec d2 ff 1f", "long code", 0},
infTest{"ed c0 1 1 0 0 0 40 20 ff 57 1b 42 2c 4f", "length extra", 0},
infTest{"ed cf c1 b1 2c 47 10 c4 30 fa 6f 35 1d 1 82 59 3d fb be 2e 2a fc f c", "long distance and extra", 0},
infTest{"ed c0 81 0 0 0 0 80 a0 fd a9 17 a9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6", "window end", 0},
}
func TestInflate(t *testing.T) {
for _, test := range infTests {
hex := strings.Split(test.hex, " ")
data := make([]byte, len(hex))
for i, h := range hex {
b, _ := strconv.ParseInt(h, 16, 32)
data[i] = byte(b)
}
buf := bytes.NewReader(data)
r := NewReader(buf)
_, err := io.Copy(ioutil.Discard, r)
if (test.n == 0 && err == nil) || (test.n != 0 && err != nil) {
t.Logf("%q: OK:", test.id)
t.Logf(" - got %v", err)
continue
}
if test.n == 0 && err != nil {
t.Errorf("%q: Expected no error, but got %v", test.id, err)
continue
}
if test.n != 0 && err == nil {
t.Errorf("%q:Expected an error, but got none", test.id)
continue
}
t.Fatal(test.n, err)
}
for _, test := range infOutTests {
hex := strings.Split(test.hex, " ")
data := make([]byte, len(hex))
for i, h := range hex {
b, _ := strconv.ParseInt(h, 16, 32)
data[i] = byte(b)
}
buf := bytes.NewReader(data)
r := NewReader(buf)
_, err := io.Copy(ioutil.Discard, r)
if test.err == (err != nil) {
t.Logf("%q: OK:", test.id)
t.Logf(" - got %v", err)
continue
}
if test.err == false && err != nil {
t.Errorf("%q: Expected no error, but got %v", test.id, err)
continue
}
if test.err && err == nil {
t.Errorf("%q: Expected an error, but got none", test.id)
continue
}
t.Fatal(test.err, err)
}
}
// Tests ported from zlib/test/infcover.c
// Since zlib inflate is push (writer) instead of pull (reader)
// some of the window size tests have been removed, since they
// are irrelevant.
type infOutTest struct {
hex string
id string
step int
win int
length int
err bool
}
var infOutTests = []infOutTest{
infOutTest{"2 8 20 80 0 3 0", "inflate_fast TYPE return", 0, -15, 258, false},
infOutTest{"63 18 5 40 c 0", "window wrap", 3, -8, 300, false},
infOutTest{"e5 e0 81 ad 6d cb b2 2c c9 01 1e 59 63 ae 7d ee fb 4d fd b5 35 41 68 ff 7f 0f 0 0 0", "fast length extra bits", 0, -8, 258, true},
infOutTest{"25 fd 81 b5 6d 59 b6 6a 49 ea af 35 6 34 eb 8c b9 f6 b9 1e ef 67 49 50 fe ff ff 3f 0 0", "fast distance extra bits", 0, -8, 258, true},
infOutTest{"3 7e 0 0 0 0 0", "fast invalid distance code", 0, -8, 258, true},
infOutTest{"1b 7 0 0 0 0 0", "fast invalid literal/length code", 0, -8, 258, true},
infOutTest{"d c7 1 ae eb 38 c 4 41 a0 87 72 de df fb 1f b8 36 b1 38 5d ff ff 0", "fast 2nd level codes and too far back", 0, -8, 258, true},
infOutTest{"63 18 5 8c 10 8 0 0 0 0", "very common case", 0, -8, 259, false},
infOutTest{"63 60 60 18 c9 0 8 18 18 18 26 c0 28 0 29 0 0 0", "contiguous and wrap around window", 6, -8, 259, false},
infOutTest{"63 0 3 0 0 0 0 0", "copy direct from output", 0, -8, 259, false},
infOutTest{"1f 8b 0 0", "bad gzip method", 0, 31, 0, true},
infOutTest{"1f 8b 8 80", "bad gzip flags", 0, 31, 0, true},
infOutTest{"77 85", "bad zlib method", 0, 15, 0, true},
infOutTest{"78 9c", "bad zlib window size", 0, 8, 0, true},
infOutTest{"1f 8b 8 1e 0 0 0 0 0 0 1 0 0 0 0 0 0", "bad header crc", 0, 47, 1, true},
infOutTest{"1f 8b 8 2 0 0 0 0 0 0 1d 26 3 0 0 0 0 0 0 0 0 0", "check gzip length", 0, 47, 0, true},
infOutTest{"78 90", "bad zlib header check", 0, 47, 0, true},
infOutTest{"8 b8 0 0 0 1", "need dictionary", 0, 8, 0, true},
infOutTest{"63 18 68 30 d0 0 0", "force split window update", 4, -8, 259, false},
infOutTest{"3 0", "use fixed blocks", 0, -15, 1, false},
infOutTest{"", "bad window size", 0, 1, 0, true},
}
func TestWriteTo(t *testing.T) {
input := make([]byte, 100000)
n, err := rand.Read(input)
if err != nil {
t.Fatal(err)
}
if n != len(input) {
t.Fatal("did not fill buffer")
}
compressed := &bytes.Buffer{}
w, err := NewWriter(compressed, -2)
if err != nil {
t.Fatal(err)
}
n, err = w.Write(input)
if err != nil {
t.Fatal(err)
}
if n != len(input) {
t.Fatal("did not fill buffer")
}
w.Close()
buf := compressed.Bytes()
dec := NewReader(bytes.NewBuffer(buf))
// ReadAll does not use WriteTo, but we wrap it in a NopCloser to be sure.
readall, err := ioutil.ReadAll(ioutil.NopCloser(dec))
if err != nil {
t.Fatal(err)
}
if len(readall) != len(input) {
t.Fatal("did not decompress everything")
}
dec = NewReader(bytes.NewBuffer(buf))
wtbuf := &bytes.Buffer{}
written, err := dec.(io.WriterTo).WriteTo(wtbuf)
if err != nil {
t.Fatal(err)
}
if written != int64(len(input)) {
t.Error("Returned length did not match, expected", len(input), "got", written)
}
if wtbuf.Len() != len(input) {
t.Error("Actual Length did not match, expected", len(input), "got", wtbuf.Len())
}
if bytes.Compare(wtbuf.Bytes(), input) != 0 {
t.Fatal("output did not match input")
}
}
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