diff --git a/tests/neofs_test.go b/tests/neofs_test.go
index 9a063bb..0d09bde 100644
--- a/tests/neofs_test.go
+++ b/tests/neofs_test.go
@@ -38,7 +38,7 @@ func deployNeoFSContract(t *testing.T, e *neotest.Executor, addrProc util.Uint16
 	return c.Hash
 }
 
-func newNeoFSInvoker(t *testing.T, n int, config ...interface{}) (*neotest.ContractInvoker, keys.PublicKeys) {
+func newNeoFSInvoker(t *testing.T, n int, config ...interface{}) (*neotest.ContractInvoker, neotest.Signer, keys.PublicKeys) {
 	e := newExecutor(t)
 
 	accounts := make([]*wallet.Account, n)
@@ -76,13 +76,13 @@ func newNeoFSInvoker(t *testing.T, n int, config ...interface{}) (*neotest.Contr
 		e.Validator.ScriptHash(), alphabet.ScriptHash(),
 		int64(10_0000_0000), nil)
 
-	return e.CommitteeInvoker(h).WithSigners(alphabet), pubs
+	return e.CommitteeInvoker(h).WithSigners(alphabet), alphabet, pubs
 }
 
 func TestNeoFS_AlphabetList(t *testing.T) {
 	const alphabetSize = 4
 
-	e, pubs := newNeoFSInvoker(t, alphabetSize)
+	e, _, pubs := newNeoFSInvoker(t, alphabetSize)
 	arr := make([]stackitem.Item, len(pubs))
 	for i := range arr {
 		arr[i] = stackitem.NewStruct([]stackitem.Item{
@@ -94,7 +94,7 @@ func TestNeoFS_AlphabetList(t *testing.T) {
 }
 
 func TestNeoFS_InnerRingCandidate(t *testing.T) {
-	e, _ := newNeoFSInvoker(t, 4, neofs.CandidateFeeConfigKey, int64(10))
+	e, _, _ := newNeoFSInvoker(t, 4, neofs.CandidateFeeConfigKey, int64(10))
 
 	const candidateCount = 3
 
diff --git a/tests/processing_test.go b/tests/processing_test.go
new file mode 100644
index 0000000..248eef8
--- /dev/null
+++ b/tests/processing_test.go
@@ -0,0 +1,40 @@
+package tests
+
+import (
+	"path"
+	"testing"
+
+	"github.com/nspcc-dev/neo-go/pkg/neotest"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
+)
+
+const processingPath = "../processing"
+
+func deployProcessingContract(t *testing.T, e *neotest.Executor, addrNeoFS util.Uint160) util.Uint160 {
+	c := neotest.CompileFile(t, e.CommitteeHash, processingPath, path.Join(processingPath, "config.yml"))
+
+	args := make([]interface{}, 1)
+	args[0] = addrNeoFS
+
+	e.DeployContract(t, c, args)
+	return c.Hash
+}
+
+func newProcessingInvoker(t *testing.T) (*neotest.ContractInvoker, neotest.Signer) {
+	neofsInvoker, irMultiAcc, _ := newNeoFSInvoker(t, 2)
+	hash := deployProcessingContract(t, neofsInvoker.Executor, neofsInvoker.Hash)
+
+	return neofsInvoker.CommitteeInvoker(hash), irMultiAcc
+}
+
+func TestVerify_Processing(t *testing.T) {
+	c, irMultiAcc := newProcessingInvoker(t)
+
+	const method = "verify"
+
+	cIR := c.WithSigners(irMultiAcc)
+
+	cIR.Invoke(t, stackitem.NewBool(true), method)
+	c.Invoke(t, stackitem.NewBool(false), method)
+}