neoneo-go/pkg/vm/tests/vm_test.go
Anthony De Meulemeester 35551282b0
Porting the NEX ICO template to neo-go as first class smart contract example (#78)
* Initial draft of the ICO template ported from NEX.

* filled in token configuration

* added kyc storage prefix

* fixed byte array conversion + added tests

* fixed broken test + made 1 file for the token sale example.

* implemented the NEP5 handlers

* bumped version
2018-05-06 08:03:26 +02:00

94 lines
2.1 KiB
Go

package vm_test
import (
"fmt"
"strings"
"testing"
"github.com/CityOfZion/neo-go/pkg/vm"
"github.com/CityOfZion/neo-go/pkg/vm/compiler"
"github.com/stretchr/testify/assert"
)
type testCase struct {
name string
src string
result interface{}
}
func eval(t *testing.T, src string, result interface{}) {
vm := vmAndCompile(t, src)
vm.Run()
assertResult(t, vm, result)
}
func evalWithArgs(t *testing.T, src string, op []byte, args []vm.StackItem, result interface{}) {
vm := vmAndCompile(t, src)
vm.LoadArgs(op, args)
vm.Run()
assertResult(t, vm, result)
}
func assertResult(t *testing.T, vm *vm.VM, result interface{}) {
assert.Equal(t, result, vm.PopResult())
assert.Equal(t, 0, vm.Astack().Len())
assert.Equal(t, 0, vm.Istack().Len())
}
func vmAndCompile(t *testing.T, src string) *vm.VM {
vm := vm.New(vm.ModeMute)
storePlugin := newStoragePlugin()
vm.RegisterInteropFunc("Neo.Storage.Get", storePlugin.Get)
vm.RegisterInteropFunc("Neo.Storage.Put", storePlugin.Put)
vm.RegisterInteropFunc("Neo.Storage.GetContext", storePlugin.GetContext)
b, err := compiler.Compile(strings.NewReader(src), &compiler.Options{})
if err != nil {
t.Fatal(err)
}
vm.Load(b)
return vm
}
type storagePlugin struct {
mem map[string][]byte
}
func newStoragePlugin() *storagePlugin {
return &storagePlugin{
mem: make(map[string][]byte),
}
}
func (s *storagePlugin) Delete(vm *vm.VM) error {
vm.Estack().Pop()
key := vm.Estack().Pop().Bytes()
delete(s.mem, string(key))
return nil
}
func (s *storagePlugin) Put(vm *vm.VM) error {
vm.Estack().Pop()
key := vm.Estack().Pop().Bytes()
value := vm.Estack().Pop().Bytes()
s.mem[string(key)] = value
return nil
}
func (s *storagePlugin) Get(vm *vm.VM) error {
vm.Estack().Pop()
item := vm.Estack().Pop().Bytes()
if val, ok := s.mem[string(item)]; ok {
vm.Estack().PushVal(val)
return nil
}
return fmt.Errorf("could not find %+v", item)
}
func (s *storagePlugin) GetContext(vm *vm.VM) error {
// Pushing anything on the stack here will work. This is just to satisfy
// the compiler, thinking it has pushed the context ^^.
vm.Estack().PushVal(10)
return nil
}