diff --git a/tests/core/peer/test_peerdata.py b/tests/core/peer/test_peerdata.py
index 0f7f5651..aad8c5d5 100644
--- a/tests/core/peer/test_peerdata.py
+++ b/tests/core/peer/test_peerdata.py
@@ -1,94 +1,106 @@
-import unittest
-from unittest.mock import (
-    MagicMock,
-)
+import pytest
 
-from multiaddr import (
-    Multiaddr,
-)
-
-from libp2p.crypto.keys import (
-    PrivateKey,
-    PublicKey,
+from libp2p.crypto.secp256k1 import (
+    create_new_key_pair,
 )
 from libp2p.peer.peerdata import (
     PeerData,
     PeerDataError,
 )
 
+MOCK_ADDR = "/peer"
+MOCK_KEYPAIR = create_new_key_pair()
+MOCK_PUBKEY = MOCK_KEYPAIR.public_key
+MOCK_PRIVKEY = MOCK_KEYPAIR.private_key
 
-class TestPeerData(unittest.TestCase):
-    def setUp(self):
-        # This will run before each test method
-        self.peer_data = PeerData()
-        self.mock_pubkey = MagicMock(PublicKey)
-        self.mock_privkey = MagicMock(PrivateKey)
-        self.mock_addr = MagicMock(Multiaddr)
 
-    def test_get_protocols_empty(self):
-        # Test case when no protocols have been added
-        self.assertEqual(self.peer_data.get_protocols(), [])
+# Test case when no protocols have been added
+def test_get_protocols_empty():
+    peer_data = PeerData()
+    assert peer_data.get_protocols() == []
 
-    def test_add_protocols(self):
-        # Test case when adding protocols
-        protocols = ["protocol1", "protocol2"]
-        self.peer_data.add_protocols(protocols)
-        self.assertEqual(self.peer_data.get_protocols(), protocols)
 
-    def test_set_protocols(self):
-        # Test case when setting protocols
-        protocols = ["protocolA", "protocolB"]
-        self.peer_data.set_protocols(protocols)
-        self.assertEqual(self.peer_data.get_protocols(), protocols)
+# Test case when adding protocols
+def test_add_protocols():
+    peer_data = PeerData()
+    protocols = ["protocol1", "protocol2"]
+    peer_data.add_protocols(protocols)
+    assert peer_data.get_protocols() == protocols
 
-    def test_add_addrs(self):
-        # Test case when adding addresses
-        addresses = [self.mock_addr]
-        self.peer_data.add_addrs(addresses)
-        self.assertEqual(self.peer_data.get_addrs(), addresses)
 
-    def test_add_dup_addrs(self):
-        # Test case when adding same address more than once
-        addresses = [self.mock_addr, self.mock_addr]
-        self.peer_data.add_addrs(addresses)
-        self.peer_data.add_addrs(addresses)
-        self.assertEqual(self.peer_data.get_addrs(), [self.mock_addr])
+# Test case when setting protocols
+def test_set_protocols():
+    peer_data = PeerData()
+    protocols = ["protocolA", "protocolB"]
+    peer_data.set_protocols(protocols)
+    assert peer_data.get_protocols() == protocols
 
-    def test_clear_addrs(self):
-        # Test case for clearing addresses
-        addresses = [self.mock_addr]
-        self.peer_data.add_addrs(addresses)
-        self.peer_data.clear_addrs()
-        self.assertEqual(self.peer_data.get_addrs(), [])
 
-    def test_put_metadata(self):
-        # Test case for adding metadata
-        key = "key1"
-        value = "value1"
-        self.peer_data.put_metadata(key, value)
-        self.assertEqual(self.peer_data.get_metadata(key), value)
+# Test case when adding addresses
+def test_add_addrs():
+    peer_data = PeerData()
+    addresses = [MOCK_ADDR]
+    peer_data.add_addrs(addresses)
+    assert peer_data.get_addrs() == addresses
 
-    def test_get_metadata_key_not_found(self):
-        # Test case for key not found in metadata
-        with self.assertRaises(PeerDataError):
-            self.peer_data.get_metadata("nonexistent_key")
 
-    def test_add_pubkey(self):
-        # Test case for adding public key
-        self.peer_data.add_pubkey(self.mock_pubkey)
-        self.assertEqual(self.peer_data.get_pubkey(), self.mock_pubkey)
+# Test case when adding same address more than once
+def test_add_dup_addrs():
+    peer_data = PeerData()
+    addresses = [MOCK_ADDR, MOCK_ADDR]
+    peer_data.add_addrs(addresses)
+    peer_data.add_addrs(addresses)
+    assert peer_data.get_addrs() == [MOCK_ADDR]
 
-    def test_get_pubkey_not_found(self):
-        # Test case when public key is not set
-        with self.assertRaises(PeerDataError):
-            self.peer_data.get_pubkey()
 
-    def test_add_privkey(self):
-        # Test case for adding private key
-        self.peer_data.add_privkey(self.mock_privkey)
-        self.assertEqual(self.peer_data.get_privkey(), self.mock_privkey)
+# Test case for clearing addresses
+def test_clear_addrs():
+    peer_data = PeerData()
+    addresses = [MOCK_ADDR]
+    peer_data.add_addrs(addresses)
+    peer_data.clear_addrs()
+    assert peer_data.get_addrs() == []
 
-    def test_get_privkey_not_found(self):
-        # Test case when private key is not set
-        with self.assertRaises(PeerDataError):
-            self.peer_data.get_privkey()
+
+# Test case for adding metadata
+def test_put_metadata():
+    peer_data = PeerData()
+    key = "key1"
+    value = "value1"
+    peer_data.put_metadata(key, value)
+    assert peer_data.get_metadata(key) == value
+
+
+# Test case for key not found in metadata
+def test_get_metadata_key_not_found():
+    peer_data = PeerData()
+    with pytest.raises(PeerDataError):
+        peer_data.get_metadata("nonexistent_key")
+
+
+# Test case for adding public key
+def test_add_pubkey():
+    peer_data = PeerData()
+    peer_data.add_pubkey(MOCK_PUBKEY)
+    assert peer_data.get_pubkey() == MOCK_PUBKEY
+
+
+# Test case when public key is not set
+def test_get_pubkey_not_found():
+    peer_data = PeerData()
+    with pytest.raises(PeerDataError):
+        peer_data.get_pubkey()
+
+
+# Test case for adding private key
+def test_add_privkey():
+    peer_data = PeerData()
+    peer_data.add_privkey(MOCK_PRIVKEY)
+    assert peer_data.get_privkey() == MOCK_PRIVKEY
+
+
+# Test case when private key is not set
+def test_get_privkey_not_found():
+    peer_data = PeerData()
+    with pytest.raises(PeerDataError):
+        peer_data.get_privkey()