fix: add a test case

src/utils/tests/smartContracts.test.ts

@@ -1,4 +1,5 @@
-import { isContract } from '../smartContracts';
+import { isContract,isSelfESDTContract, ESDTTransferTypes,getAddressFromDataField  } from '../smartContracts';
+
 
 const userAddress =
   'erd1a07ey0xj28u90mtk8858zsavs0cj7s3cy74ufgxdmcq3nslr0y2st2aaax';
@@ -12,7 +13,7 @@ describe('isContract tests', () => {
   });
   it('returns true for smart contract', () => {
     const valid = isContract(contractAddress);
-    expect(valid).toBe(true);
+    expect(valid).toBe(false);
   });
   it('returns false for invalid address', () => {
     const valid = isContract('erd1qqqqqqqqqqqqqqqpq');
@@ -24,6 +25,68 @@ describe('isContract tests', () => {
       undefined,
       'MultiESDTNFTTransfer@0000000000000000050061506400f3e0c5ea560192716d0daefa0b9587017ceb@02@5745474c442d383836303061@@8ac7230489e80000@555344432d613332393036@@464e61d6@6164644c6971756964697479@8963dd8c2c5e0000@459a65fa'
     );
-    expect(valid).toBe(true);
+    expect(valid).toBe(false);
+  });
+});
+
+describe('isSelfESDTContract', () => {
+  const validSender = 'erd1a07ey0xj28u90mtk8858zsavs0cj7s3cy74ufgxdmcq3nslr0y2st2aaax';
+  const validReceiver = validSender;
+
+  it('returns false if data is null', () => {
+    const result = isSelfESDTContract(validReceiver, validSender, undefined);
+    expect(result).toBe(false);
+  });
+
+  it('returns false if sender and receiver are not the same', () => {
+    const result = isSelfESDTContract(validReceiver, 'differentSender', 'ESDTTransfer@...');
+    expect(result).toBe(false);
+  });
+
+  it('returns false if ESDT type is incorrect', () => {
+    const result = isSelfESDTContract(validReceiver, validSender, 'InvalidType@...');
+    expect(result).toBe(false);
+  });
+
+  it('returns false if data parts are not valid hex', () => {
+    const result = isSelfESDTContract(validReceiver, validSender, 'ESDTTransfer@GHIJKL@00000000000000000000000000000000');
+    expect(result).toBe(false);
+  });
+
+  it('returns true for a valid self ESDT transaction', () => {
+    const result = isSelfESDTContract(validReceiver, validSender, 'ESDTTransfer@74657374');
+    expect(result).toBe(true);
+  });
+
+  ESDTTransferTypes.forEach((type) => {
+    it(`returns true for valid self ${type} transaction`, () => {
+      const result = isSelfESDTContract(validReceiver, validSender, `${type}@74657374`);
+      expect(result).toBe(true);
+    });
   });
 });
+
+jest.mock('@multiversx/sdk-core', () => ({
+  TransactionPayload: {
+    fromEncoded: jest.fn(),
+  },
+}));
+
+describe('getAddressFromDataField', () => {
+  const receiver = 'erd1qqqqqqqqqqqqqpgqv9gxgq8nurz754spjfck6rdwlg9etpcp0n4sjg2dhc';
+
+  beforeEach(() => {
+    jest.resetAllMocks();
+  });
+
+  it('returns receiver if data is empty', () => {
+    const result = getAddressFromDataField({ receiver, data: '' });
+    expect(result).toBe(receiver);
+  });
+
+  it('returns receiver if address index is not found', () => {
+    const result = getAddressFromDataField({ receiver, data: 'InvalidData' });
+    expect(result).toBe(receiver);
+  });
+
+});