neo-go/pkg/compiler/interop_test.go

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package compiler_test
import (
"fmt"
"math/big"
"strings"
"testing"
"github.com/nspcc-dev/neo-go/pkg/compiler"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/core"
"github.com/nspcc-dev/neo-go/pkg/core/dao"
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/storage"
"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/stretchr/testify/require"
"go.uber.org/zap/zaptest"
)
func TestFromAddress(t *testing.T) {
as1 := "NQRLhCpAru9BjGsMwk67vdMwmzKMRgsnnN"
addr1, err := address.StringToUint160(as1)
require.NoError(t, err)
as2 := "NPAsqZkx9WhNd4P72uhZxBhLinSuNkxfB8"
addr2, err := address.StringToUint160(as2)
require.NoError(t, err)
t.Run("append 2 addresses", func(t *testing.T) {
src := `
package foo
import "github.com/nspcc-dev/neo-go/pkg/interop/util"
func Main() []byte {
addr1 := util.FromAddress("` + as1 + `")
addr2 := util.FromAddress("` + as2 + `")
sum := append(addr1, addr2...)
return sum
}
`
eval(t, src, append(addr1.BytesBE(), addr2.BytesBE()...))
})
t.Run("append 2 addresses inline", func(t *testing.T) {
src := `
package foo
import "github.com/nspcc-dev/neo-go/pkg/interop/util"
func Main() []byte {
addr1 := util.FromAddress("` + as1 + `")
sum := append(addr1, util.FromAddress("` + as2 + `")...)
return sum
}
`
eval(t, src, append(addr1.BytesBE(), addr2.BytesBE()...))
})
}
func spawnVM(t *testing.T, ic *interop.Context, src string) *vm.VM {
b, err := compiler.Compile(strings.NewReader(src))
require.NoError(t, err)
v := core.SpawnVM(ic)
v.LoadScriptWithFlags(b, smartcontract.All)
return v
}
func TestAppCall(t *testing.T) {
srcInner := `
package foo
func Main(a []byte, b []byte) []byte {
return append(a, b...)
}
`
inner, err := compiler.Compile(strings.NewReader(srcInner))
require.NoError(t, err)
ic := interop.NewContext(trigger.Application, nil, dao.NewSimple(storage.NewMemoryStore(), netmode.UnitTestNet), nil, nil, nil, zaptest.NewLogger(t))
require.NoError(t, ic.DAO.PutContractState(&state.Contract{Script: inner}))
ih := hash.Hash160(inner)
t.Run("valid script", func(t *testing.T) {
src := getAppCallScript(fmt.Sprintf("%#v", ih.BytesBE()))
v := spawnVM(t, ic, src)
require.NoError(t, v.Run())
assertResult(t, v, []byte{1, 2, 3, 4})
})
t.Run("missing script", func(t *testing.T) {
h := ih
h[0] = ^h[0]
src := getAppCallScript(fmt.Sprintf("%#v", h.BytesBE()))
v := spawnVM(t, ic, src)
require.Error(t, v.Run())
})
t.Run("invalid script address", func(t *testing.T) {
src := getAppCallScript("[]byte{1, 2, 3}")
_, err := compiler.Compile(strings.NewReader(src))
require.Error(t, err)
})
t.Run("convert from string constant", func(t *testing.T) {
src := `
package foo
import "github.com/nspcc-dev/neo-go/pkg/interop/engine"
const scriptHash = ` + fmt.Sprintf("%#v", string(ih.BytesBE())) + `
func Main() []byte {
x := []byte{1, 2}
y := []byte{3, 4}
result := engine.AppCall([]byte(scriptHash), x, y)
return result.([]byte)
}
`
v := spawnVM(t, ic, src)
require.NoError(t, v.Run())
assertResult(t, v, []byte{1, 2, 3, 4})
})
}
func getAppCallScript(h string) string {
return `
package foo
import "github.com/nspcc-dev/neo-go/pkg/interop/engine"
func Main() []byte {
x := []byte{1, 2}
y := []byte{3, 4}
result := engine.AppCall(` + h + `, x, y)
return result.([]byte)
}
`
}
func TestBuiltinDoesNotCompile(t *testing.T) {
src := `package foo
import "github.com/nspcc-dev/neo-go/pkg/interop/util"
func Main() bool {
a := 1
b := 2
return util.Equals(a, b)
}`
v := vmAndCompile(t, src)
ctx := v.Context()
retCount := 0
for op, _, err := ctx.Next(); err == nil; op, _, err = ctx.Next() {
if ctx.IP() > len(ctx.Program()) {
break
}
if op == opcode.RET {
retCount++
}
}
require.Equal(t, 1, retCount)
}
func TestInteropPackage(t *testing.T) {
src := `package foo
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/block"
func Main() int {
b := block.Block{}
a := block.GetTransactionCount(b)
return a
}`
eval(t, src, big.NewInt(42))
}
func TestBuiltinPackage(t *testing.T) {
src := `package foo
import "github.com/nspcc-dev/neo-go/pkg/compiler/testdata/util"
func Main() int {
if util.Equals(1, 2) { // always returns true
return 1
}
return 2
}`
eval(t, src, big.NewInt(1))
}