forked from TrueCloudLab/neoneo-go
4bd5b2812e
* support VM to pass method and arguments to a script. * added support for type assertions in smartcontracts. * added native vm support for print. * moved VM API packages to vm -> API * reverted the native Print opcode in favor of runtime.Log * added support for registering custom interop hooks in the VM. * Updated README * Updated compiler with @OPTIMIZE tags * Moved more tests to VM package. * optimized and refactored compiler and vm API * updated README with new smartcontract apis * bumped version
109 lines
2.4 KiB
Go
109 lines
2.4 KiB
Go
package vm_test
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import (
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"fmt"
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"strings"
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"testing"
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"github.com/CityOfZion/neo-go/pkg/vm"
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"github.com/CityOfZion/neo-go/pkg/vm/compiler"
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"github.com/stretchr/testify/assert"
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)
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type testCase struct {
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name string
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src string
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result interface{}
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}
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func eval(t *testing.T, src string, result interface{}) {
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vm := vmAndCompile(t, src)
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vm.Run()
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assertResult(t, vm, result)
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}
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func evalWithArgs(t *testing.T, src string, op []byte, args []vm.StackItem, result interface{}) {
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vm := vmAndCompile(t, src)
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vm.LoadArgs(op, args)
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vm.Run()
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assertResult(t, vm, result)
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}
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func assertResult(t *testing.T, vm *vm.VM, result interface{}) {
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assert.Equal(t, result, vm.PopResult())
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assert.Equal(t, 0, vm.Astack().Len())
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assert.Equal(t, 0, vm.Istack().Len())
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}
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func vmAndCompile(t *testing.T, src string) *vm.VM {
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vm := vm.New(vm.ModeMute)
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storePlugin := newStoragePlugin()
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vm.RegisterInteropFunc("Neo.Storage.Get", storePlugin.Get)
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vm.RegisterInteropFunc("Neo.Storage.Put", storePlugin.Put)
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b, err := compiler.Compile(strings.NewReader(src), &compiler.Options{})
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if err != nil {
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t.Fatal(err)
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}
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vm.Load(b)
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return vm
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}
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func TestVMAndCompilerCases(t *testing.T) {
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vm := vm.New(vm.ModeMute)
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storePlugin := newStoragePlugin()
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vm.RegisterInteropFunc("Neo.Storage.Get", storePlugin.Get)
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testCases := []testCase{}
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testCases = append(testCases, numericTestCases...)
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testCases = append(testCases, assignTestCases...)
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testCases = append(testCases, binaryExprTestCases...)
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testCases = append(testCases, structTestCases...)
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for _, tc := range testCases {
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b, err := compiler.Compile(strings.NewReader(tc.src), &compiler.Options{})
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if err != nil {
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t.Fatal(err)
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}
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vm.Load(b)
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vm.Run()
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assert.Equal(t, tc.result, vm.PopResult())
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}
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}
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type storagePlugin struct {
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mem map[string][]byte
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}
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func newStoragePlugin() *storagePlugin {
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return &storagePlugin{
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mem: make(map[string][]byte),
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}
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}
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func (s *storagePlugin) Delete(vm *vm.VM) error {
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vm.Estack().Pop()
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key := vm.Estack().Pop().Bytes()
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delete(s.mem, string(key))
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return nil
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}
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func (s *storagePlugin) Put(vm *vm.VM) error {
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vm.Estack().Pop()
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key := vm.Estack().Pop().Bytes()
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value := vm.Estack().Pop().Bytes()
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s.mem[string(key)] = value
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return nil
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}
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func (s *storagePlugin) Get(vm *vm.VM) error {
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vm.Estack().Pop()
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item := vm.Estack().Pop().Bytes()
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if val, ok := s.mem[string(item)]; ok {
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vm.Estack().PushVal(val)
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return nil
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}
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return fmt.Errorf("could not find %+v", item)
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}
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