compiler: make Notify accept varargs

pkg/compiler/syscall_test.go

@@ -2,6 +2,10 @@ package compiler_test
 
 import (
 	"testing"
+
+	"github.com/nspcc-dev/neo-go/pkg/vm"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestStoragePutGet(t *testing.T) {
@@ -20,3 +24,24 @@ func TestStoragePutGet(t *testing.T) {
 	`
 	eval(t, src, []byte("foo"))
 }
+
+func TestNotify(t *testing.T) {
+	src := `package foo
+	import "github.com/nspcc-dev/neo-go/pkg/interop/runtime"
+	func Main(arg int) {
+		runtime.Notify(arg, "sum", arg+1)
+		runtime.Notify()
+		runtime.Notify("single")
+	}`
+
+	v, s := vmAndCompileInterop(t, src)
+	v.Estack().PushVal(11)
+
+	require.NoError(t, v.Run())
+	require.Equal(t, 3, len(s.events))
+
+	exp0 := []vm.StackItem{vm.NewBigIntegerItem(11), vm.NewByteArrayItem([]byte("sum")), vm.NewBigIntegerItem(12)}
+	assert.Equal(t, exp0, s.events[0].Value())
+	assert.Equal(t, []vm.StackItem{}, s.events[1].Value())
+	assert.Equal(t, []vm.StackItem{vm.NewByteArrayItem([]byte("single"))}, s.events[2].Value())
+}