diff --git a/tests/JettonMaster.spec.ts b/tests/JettonMaster.spec.ts
index 80bac0e..45356c3 100644
--- a/tests/JettonMaster.spec.ts
+++ b/tests/JettonMaster.spec.ts
@@ -51,6 +51,14 @@ describe('JettonMaster', () => {
             to: jettonMaster.address,
             success: true,
             deploy: true,
+            op: 0x133701,
+        });
+        expect(deployResult.transactions).toHaveTransaction({
+            from: jettonMaster.address,
+            to: deployer.address,
+            success: true,
+            deploy: false,
+            op: 0x133702,
         });
     });
 
@@ -92,6 +100,8 @@ describe('JettonMaster', () => {
             to: jettonMaster.address,
             success: false,
             deploy: false,
+            op: 0x133701,
+            exitCode: 6903,
         });
     });
 
@@ -116,6 +126,7 @@ describe('JettonMaster', () => {
             to: jettonMaster.address,
             success: false,
             deploy: false,
+            op: 0x133701,
             exitCode: 132,
         });
     });
@@ -138,6 +149,7 @@ describe('JettonMaster', () => {
             to: jettonMaster.address,
             success: true,
             deploy: false,
+            op: 0x133703,
         });
 
         // Jetton description
@@ -157,6 +169,7 @@ describe('JettonMaster', () => {
             to: jettonMaster.address,
             success: true,
             deploy: false,
+            op: 0x133703,
         });
 
         // Jetton symbol
@@ -176,6 +189,7 @@ describe('JettonMaster', () => {
             to: jettonMaster.address,
             success: true,
             deploy: false,
+            op: 0x133703,
         });
 
         // Jetton max_supply
@@ -195,6 +209,7 @@ describe('JettonMaster', () => {
             to: jettonMaster.address,
             success: true,
             deploy: false,
+            op: 0x133703,
         });
 
         // Checks
@@ -221,12 +236,14 @@ describe('JettonMaster', () => {
             to: jettonMaster.address,
             success: true,
             deploy: false,
+            op: 0x133704,
         });
         expect(mintResult.transactions).toHaveTransaction({
             from: jettonMaster.address,
             to: jettonWallet.address,
             success: true,
             deploy: true,
+            op: 0x178d4519,
         });
 
         let jettonMasterMetadata = await jettonMaster.getGetJettonData();
@@ -254,6 +271,7 @@ describe('JettonMaster', () => {
             to: jettonMaster.address,
             success: false,
             deploy: false,
+            op: 0x133704,
             exitCode: 132,
         });
     });
diff --git a/tests/JettonWallet.spec.ts b/tests/JettonWallet.spec.ts
index 8f350ce..77e4705 100644
--- a/tests/JettonWallet.spec.ts
+++ b/tests/JettonWallet.spec.ts
@@ -1,5 +1,5 @@
 import { Blockchain, SandboxContract, TreasuryContract } from '@ton/sandbox';
-import { Builder, Slice, toNano } from '@ton/core';
+import { Builder, toNano } from '@ton/core';
 import { JettonWallet } from '../build/Jetton/tact_JettonWallet';
 import { JettonMaster } from '../build/Jetton/tact_JettonMaster';
 import '@ton/test-utils';
@@ -93,4 +93,64 @@ describe('JettonMaster', () => {
         let otherJettonWalletData = await otherJettonWallet.getGetWalletData();
         expect(otherJettonWalletData.balance).toEqual(toNano("228"));
     });
+
+    it('should not transfer tokens not owner', async () => {
+        const transferResult = await jettonWallet.send(
+            other.getSender(),
+            {
+                value: toNano("0.05"),
+            },
+            {
+                $$type: 'JettonTransfer',
+                query_id: 0n,
+                amount: toNano("228"),
+                destination: other.address,
+                custom_payload: null,
+                forward_payload: new Builder().asSlice(),
+                forward_ton_amount: 0n,
+                response_destination: other.address,
+            }
+        );
+        expect(transferResult.transactions).toHaveTransaction({
+            from: other.address,
+            to: jettonWallet.address,
+            deploy: false,
+            success: false,
+            op: 0x0f8a7ea5,
+            exitCode: 132,
+        });
+
+        let jettonWalletData = await jettonWallet.getGetWalletData();
+        expect(jettonWalletData.balance).toEqual(toNano("1337"));
+    });
+
+    it('should not transfer tokens not enough amount', async () => {
+        const transferResult = await jettonWallet.send(
+            deployer.getSender(),
+            {
+                value: toNano("0.05"),
+            },
+            {
+                $$type: 'JettonTransfer',
+                query_id: 0n,
+                amount: toNano("100500"),
+                destination: other.address,
+                custom_payload: null,
+                forward_payload: new Builder().asSlice(),
+                forward_ton_amount: 0n,
+                response_destination: other.address,
+            }
+        );
+        expect(transferResult.transactions).toHaveTransaction({
+            from: deployer.address,
+            to: jettonWallet.address,
+            deploy: false,
+            success: false,
+            op: 0x0f8a7ea5,
+            exitCode: 6901,
+        });
+
+        let jettonWalletData = await jettonWallet.getGetWalletData();
+        expect(jettonWalletData.balance).toEqual(toNano("1337"));
+    });
 });