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
|
package vm
import (
"bytes"
"fmt"
"io/ioutil"
"log"
"math/big"
"os"
"testing"
"github.com/ethereum/eth-go/ethcrypto"
"github.com/ethereum/eth-go/ethlog"
"github.com/ethereum/eth-go/ethstate"
"github.com/ethereum/eth-go/ethtrie"
"github.com/ethereum/eth-go/ethutil"
)
type TestEnv struct {
}
func (self TestEnv) Origin() []byte { return nil }
func (self TestEnv) BlockNumber() *big.Int { return nil }
func (self TestEnv) BlockHash() []byte { return nil }
func (self TestEnv) PrevHash() []byte { return nil }
func (self TestEnv) Coinbase() []byte { return nil }
func (self TestEnv) Time() int64 { return 0 }
func (self TestEnv) Difficulty() *big.Int { return nil }
func (self TestEnv) Value() *big.Int { return nil }
// This is likely to fail if anything ever gets looked up in the state trie :-)
func (self TestEnv) State() *ethstate.State { return ethstate.New(ethtrie.New(nil, "")) }
const mutcode = `
var x = 0;
for i := 0; i < 10; i++ {
x = i
}
return x`
func setup(level ethlog.LogLevel, typ Type) (*Closure, VirtualMachine) {
code, err := ethutil.Compile(mutcode, true)
if err != nil {
log.Fatal(err)
}
// Pipe output to /dev/null
ethlog.AddLogSystem(ethlog.NewStdLogSystem(ioutil.Discard, log.LstdFlags, level))
ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
stateObject := ethstate.NewStateObject([]byte{'j', 'e', 'f', 'f'})
callerClosure := NewClosure(nil, stateObject, stateObject, code, big.NewInt(1000000), big.NewInt(0))
return callerClosure, New(TestEnv{}, typ)
}
func TestDebugVm(t *testing.T) {
closure, vm := setup(ethlog.DebugLevel, DebugVmTy)
ret, _, e := closure.Call(vm, nil)
if e != nil {
fmt.Println("error", e)
}
if ret[len(ret)-1] != 9 {
t.Errorf("Expected VM to return 9, got", ret, "instead.")
}
}
func TestVm(t *testing.T) {
closure, vm := setup(ethlog.DebugLevel, StandardVmTy)
ret, _, e := closure.Call(vm, nil)
if e != nil {
fmt.Println("error", e)
}
if ret[len(ret)-1] != 9 {
t.Errorf("Expected VM to return 9, got", ret, "instead.")
}
}
func BenchmarkDebugVm(b *testing.B) {
closure, vm := setup(ethlog.InfoLevel, DebugVmTy)
b.ResetTimer()
for i := 0; i < b.N; i++ {
closure.Call(vm, nil)
}
}
func BenchmarkVm(b *testing.B) {
closure, vm := setup(ethlog.InfoLevel, StandardVmTy)
b.ResetTimer()
for i := 0; i < b.N; i++ {
closure.Call(vm, nil)
}
}
func RunCode(mutCode string, typ Type) []byte {
code, err := ethutil.Compile(mutCode, true)
if err != nil {
log.Fatal(err)
}
ethlog.AddLogSystem(ethlog.NewStdLogSystem(os.Stdout, log.LstdFlags, ethlog.InfoLevel))
ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
stateObject := ethstate.NewStateObject([]byte{'j', 'e', 'f', 'f'})
closure := NewClosure(nil, stateObject, stateObject, code, big.NewInt(1000000), big.NewInt(0))
vm := New(TestEnv{}, typ)
ret, _, e := closure.Call(vm, nil)
if e != nil {
fmt.Println(e)
}
return ret
}
func TestBuildInSha256(t *testing.T) {
ret := RunCode(`
var in = 42
var out = 0
call(0x2, 0, 10000, in, out)
return out
`, DebugVmTy)
exp := ethcrypto.Sha256(ethutil.LeftPadBytes([]byte{42}, 32))
if bytes.Compare(ret, exp) != 0 {
t.Errorf("Expected %x, got %x", exp, ret)
}
}
func TestBuildInRipemd(t *testing.T) {
ret := RunCode(`
var in = 42
var out = 0
call(0x3, 0, 10000, in, out)
return out
`, DebugVmTy)
exp := ethutil.RightPadBytes(ethcrypto.Ripemd160(ethutil.LeftPadBytes([]byte{42}, 32)), 32)
if bytes.Compare(ret, exp) != 0 {
t.Errorf("Expected %x, got %x", exp, ret)
}
}
|
