/usr/share/gocode/src/github.com/tendermint/go-wire/int_test.go is in golang-github-tendermint-go-wire-dev 0~20161027~0git287d8ca-1.
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 | package wire
import (
"bytes"
"fmt"
"testing"
)
const arch64 = uint64(^uint(0)) == ^uint64(0)
// Returns true of overflow or underflow
func checkIntSpill(i int64) bool {
return i == (int64)((int)(i))
}
// Returns true of overflow or underflow
func checkUintSpill(i uint64) bool {
return i == (uint64)((uint)(i))
}
func TestVarint(t *testing.T) {
check := func(i64 int64, s string) {
i := int(i64)
// Test with WriteVarint
{
buf := new(bytes.Buffer)
n, err := new(int), new(error)
WriteVarint(i, buf, n, err)
bufBytes := buf.Bytes() // Read before consuming below.
i_ := ReadVarint(buf, n, err)
if i != i_ {
fmt.Println(bufBytes)
t.Fatalf("Encoded %v and got %v", i, i_)
}
if s != "" {
if bufHex := fmt.Sprintf("%X", bufBytes); bufHex != s {
t.Fatalf("Encoded %v, expected %v", bufHex, s)
}
}
}
// Test with PutVarint
{
buf := make([]byte, 100, 100)
n1, err := PutVarint(buf, i)
if err != nil {
t.Errorf("Unexpected error in PutVarint %v (encoding %v)", err.Error(), i)
}
if s != "" {
if n1 != len(s)/2 {
t.Errorf("Unexpected PutVarint length %v, expected %v (encoding %v)", n1, len(s)/2, i)
}
if bufHex := fmt.Sprintf("%X", buf[:n1]); bufHex != s {
t.Errorf("Got %v, expected %v (encoding %v)", bufHex, s, i)
}
}
i2, n2, err := GetVarint(buf)
if err != nil {
t.Errorf("Unexpected error in GetVarint %v (encoding %v)", err.Error(), i)
}
if s != "" {
if n2 != len(s)/2 {
t.Errorf("Unexpected GetVarint length %v, expected %v (encoding %v)", n2, len(s)/2, i)
}
} else {
if n1 != n2 {
t.Errorf("Unmatched Put/Get lengths. %v vs %v (encoding %v)", n1, n2, i)
}
}
if i != i2 {
t.Errorf("Put/Get expected %v, got %v (encoding %v)", i, i2, i)
}
}
}
// 123457 is some prime.
var i int64
for i = -(2 << 33); i < (2 << 33); i += 123457 {
if !arch64 && checkIntSpill(i) {
continue
}
check(i, "")
}
// Near zero
check(-1, "F101")
check(0, "00")
check(1, "0101")
// Positives
check(1<<31-1, "047FFFFFFF")
if arch64 {
check(1<<32-1, "04FFFFFFFF")
check(1<<32+0, "050100000000")
check(1<<32+1, "050100000001")
check(1<<53-1, "071FFFFFFFFFFFFF")
}
// Negatives
check(-1<<31+1, "F47FFFFFFF")
if arch64 {
check(-1<<32+1, "F4FFFFFFFF")
check(-1<<32-0, "F50100000000")
check(-1<<32-1, "F50100000001")
check(-1<<53+1, "F71FFFFFFFFFFFFF")
}
}
func TestUvarint(t *testing.T) {
check := func(i64 uint64, s string) {
i := uint(i64)
// Test with WriteUvarint
{
buf := new(bytes.Buffer)
n, err := new(int), new(error)
WriteUvarint(i, buf, n, err)
bufBytes := buf.Bytes()
i_ := ReadUvarint(buf, n, err)
if i != i_ {
fmt.Println(buf.Bytes())
t.Fatalf("Encoded %v and got %v", i, i_)
}
if s != "" {
if bufHex := fmt.Sprintf("%X", bufBytes); bufHex != s {
t.Fatalf("Encoded %v, expected %v", bufHex, s)
}
}
}
// Test with PutUvarint
{
buf := make([]byte, 100, 100)
n1, err := PutUvarint(buf, i)
if err != nil {
t.Errorf("Unexpected error in PutUvarint %v (encoding %v)", err.Error(), i)
}
if s != "" {
if n1 != len(s)/2 {
t.Errorf("Unexpected PutUvarint length %v, expected %v (encoding %v)", n1, len(s)/2, i)
}
if bufHex := fmt.Sprintf("%X", buf[:n1]); bufHex != s {
t.Errorf("Got %v, expected %v (encoding %v)", bufHex, s, i)
}
}
i2, n2, err := GetUvarint(buf)
if err != nil {
t.Errorf("Unexpected error in GetUvarint %v (encoding %v)", err.Error(), i)
}
if s != "" {
if n2 != len(s)/2 {
t.Errorf("Unexpected GetUvarint length %v, expected %v (encoding %v)", n2, len(s)/2, i)
}
} else {
if n1 != n2 {
t.Errorf("Unmatched Put/Get lengths. %v vs %v (encoding %v)", n1, n2, i)
}
}
if i != i2 {
t.Errorf("Put/Get expected %v, got %v (encoding %v)", i, i2, i)
}
}
}
// 123457 is some prime.
var i uint64
for i = 0; i < (2 << 33); i += 123457 {
if !arch64 && checkUintSpill(i) {
continue
}
check(i, "")
}
check(1, "0101")
check(1<<31-1, "047FFFFFFF")
check(1<<32-1, "04FFFFFFFF")
if arch64 {
check(1<<32-1, "04FFFFFFFF")
check(1<<32+0, "050100000000")
check(1<<32+1, "050100000001")
check(1<<53-1, "071FFFFFFFFFFFFF")
}
}
|