diff --git a/blockchain_integration/pi_network/pinnacle/tests/test_cross_chain_bridge.py b/blockchain_integration/pi_network/pinnacle/tests/test_cross_chain_bridge.py
new file mode 100644
index 000000000..156de5596
--- /dev/null
+++ b/blockchain_integration/pi_network/pinnacle/tests/test_cross_chain_bridge.py
@@ -0,0 +1,36 @@
+import unittest
+from unittest.mock import MagicMock, patch
+from pinnacle.interfaces.cross_chain_bridge_interface import CrossChainBridgeInterface
+from pinnacle.cross_chain_bridges.poly_network_bridge import PolyNetworkBridge
+
+class TestCrossChainBridge(unittest.TestCase):
+    def setUp(self):
+        self.cross_chain_bridge = PolyNetworkBridge()
+
+    def test_bridge_tokens(self):
+        # Mock the Poly Network API response
+        response = {'txHash': '0x...'}
+        with patch('requests.post', return_value=MagicMock(json=MagicMock(return_value=response))):
+            tx_hash = self.cross_chain_bridge.bridge_tokens(['ETH', 'BTC'], 1.0)
+            self.assertEqual(tx_hash, '0x...')
+
+    def test_get_bridge_fee(self):
+        # Mock the Poly Network API response
+        response = {'fee': '0.01'}
+        with patch('requests.get', return_value=MagicMock(json=MagicMock(return_value=response))):
+            fee = self.cross_chain_bridge.get_bridge_fee(['ETH', 'BTC'], 1.0)
+            self.assertEqual(fee, 0.01)
+
+    def test_get_supported_chains(self):
+        # Mock the Poly Network API response
+        response = {'chains': ['Ethereum', 'Binance Smart Chain']}
+        with patch('requests.get', return_value=MagicMock(json=MagicMock(return_value=response))):
+            supported_chains = self.cross_chain_bridge.get_supported_chains()
+            self.assertEqual(supported_chains, ['Ethereum', 'Binance Smart Chain'])
+
+    def test_get_supported_tokens(self):
+        # Mock the Poly Network API response
+        response = {'tokens': ['ETH', 'BTC', 'LTC']}
+        with patch('requests.get', return_value=MagicMock(json=MagicMock(return_value=response))):
+            supported_tokens = self.cross_chain_bridge.get_supported_tokens()
+            self.assertEqual(supported_tokens, ['ETH', 'BTC', 'LTC'])