diff --git a/tests-functional/tests/clients/signals.py b/tests-functional/clients/signals.py
similarity index 80%
rename from tests-functional/tests/clients/signals.py
rename to tests-functional/clients/signals.py
index 8eea6f327..28b670af4 100644
--- a/tests-functional/tests/clients/signals.py
+++ b/tests-functional/clients/signals.py
@@ -1,14 +1,14 @@
-
-import websocket
-import time
 import json
 import logging
+import time
+
+import websocket
 
 
 class SignalClient:
 
     def __init__(self, ws_url, await_signals):
-        self.ws_url = ws_url
+        self.url = f"{ws_url}/signals"
 
         self.await_signals = await_signals
         self.received_signals = {
@@ -23,15 +23,15 @@ class SignalClient:
     def wait_for_signal(self, signal_type, timeout=20):
         start_time = time.time()
         while not self.received_signals.get(signal_type):
-            time_passed = time.time() - start_time
-            if time_passed >= timeout:
+            if time.time() - start_time >= timeout:
                 raise TimeoutError(
-                    f"Signal {signal_type} is not  received in {timeout} seconds")
+                    f"Signal {signal_type} is not received in {timeout} seconds")
             time.sleep(0.2)
+        logging.debug(f"Signal {signal_type} is received in {round(time.time() - start_time)} seconds")
         return self.received_signals[signal_type][0]
 
     def _on_error(self, ws, error):
-        logging.info(f"Error: {error}")
+        logging.error(f"Error: {error}")
 
     def _on_close(self, ws, close_status_code, close_msg):
         logging.info(f"Connection closed: {close_status_code}, {close_msg}")
@@ -40,7 +40,6 @@ class SignalClient:
         logging.info("Connection opened")
 
     def _connect(self):
-        self.url = f"{self.ws_url}/signals"
         ws = websocket.WebSocketApp(self.url,
                                     on_message=self.on_message,
                                     on_error=self._on_error,
diff --git a/tests-functional/tests/clients/status_backend.py b/tests-functional/clients/status_backend.py
similarity index 87%
rename from tests-functional/tests/clients/status_backend.py
rename to tests-functional/clients/status_backend.py
index 0459659db..6fb7313cb 100644
--- a/tests-functional/tests/clients/status_backend.py
+++ b/tests-functional/clients/status_backend.py
@@ -1,21 +1,22 @@
-import jsonschema
 import json
-import requests
+import logging
 from datetime import datetime
-from conftest import option, user_1
+
+import jsonschema
+import requests
+
 from clients.signals import SignalClient
+from conftest import option
+from constants import user_1
 
 
 class RpcClient:
 
-    def __init__(
-        self, rpc_url, client=requests.Session()
-    ):
-
+    def __init__(self, rpc_url, client=requests.Session()):
         self.client = client
         self.rpc_url = rpc_url
 
-    def _try_except_JSONDecodeError_KeyError(self, response, key: str):
+    def _check_decode_and_key_errors_in_response(self, response, key):
         try:
             return response.json()[key]
         except json.JSONDecodeError:
@@ -28,7 +29,7 @@ class RpcClient:
     def verify_is_valid_json_rpc_response(self, response, _id=None):
         assert response.status_code == 200
         assert response.content
-        self._try_except_JSONDecodeError_KeyError(response, "result")
+        self._check_decode_and_key_errors_in_response(response, "result")
 
         if _id:
             try:
@@ -43,14 +44,14 @@ class RpcClient:
     def verify_is_json_rpc_error(self, response):
         assert response.status_code == 200
         assert response.content
-        self._try_except_JSONDecodeError_KeyError(response, "error")
+        self._check_decode_and_key_errors_in_response(response, "error")
 
-    def rpc_request(self, method, params=[], _id=None, url=None):
+    def rpc_request(self, method, params=[], request_id=13, url=None):
         url = url if url else self.rpc_url
-        data = {"jsonrpc": "2.0", "method": method}
+        data = {"jsonrpc": "2.0", "method": method, "id": request_id}
         if params:
             data["params"] = params
-        data["id"] = _id if _id else 13
+        logging.info(f"Sending POST request to url {url} with data: {json.dumps(data, sort_keys=True, indent=4)}")
         response = self.client.post(url, json=data)
 
         return response
@@ -94,7 +95,7 @@ class StatusBackend(RpcClient, SignalClient):
         except KeyError:
             pass
 
-    def api_valid_request(self, method, data, url=None):
+    def api_valid_request(self, method, data):
         response = self.api_request(method, data)
         self.verify_is_valid_api_response(response)
         return response
diff --git a/tests-functional/conftest.py b/tests-functional/conftest.py
index ae5793f73..b6b7b1c25 100644
--- a/tests-functional/conftest.py
+++ b/tests-functional/conftest.py
@@ -1,6 +1,9 @@
 import os
+import threading
 from dataclasses import dataclass
 
+import pytest as pytest
+
 
 def pytest_addoption(parser):
     parser.addoption(
@@ -40,31 +43,45 @@ def pytest_addoption(parser):
         default="Strong12345",
     )
 
-@dataclass
-class Account():
-    
-    address: str
-    private_key: str
-    password: str
-
-user_1 = Account(
-    address="0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266",
-    private_key="0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80",
-    password="Strong12345"
-)
-user_2 = Account(
-    address="0x70997970c51812dc3a010c7d01b50e0d17dc79c8",
-    private_key="0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d",
-    password="Strong12345"
-)
 
 @dataclass
 class Option:
     pass
 
+
 option = Option()
 
+
 def pytest_configure(config):
     global option
     option = config.option
     option.base_dir = os.path.dirname(os.path.abspath(__file__))
+
+
+@pytest.fixture(scope="session", autouse=True)
+def init_status_backend():
+    await_signals = [
+
+        "mediaserver.started",
+        "node.started",
+        "node.ready",
+        "node.login",
+
+        "wallet",  # TODO: a test per event of a different type
+    ]
+
+    from clients.status_backend import StatusBackend
+    backend_client = StatusBackend(
+        await_signals=await_signals
+    )
+
+    websocket_thread = threading.Thread(
+        target=backend_client._connect
+    )
+    websocket_thread.daemon = True
+    websocket_thread.start()
+
+    backend_client.init_status_backend()
+    backend_client.create_account_and_login()
+
+    yield backend_client
diff --git a/tests-functional/constants.py b/tests-functional/constants.py
new file mode 100644
index 000000000..2730d4c38
--- /dev/null
+++ b/tests-functional/constants.py
@@ -0,0 +1,20 @@
+from dataclasses import dataclass
+
+
+@dataclass
+class Account:
+    address: str
+    private_key: str
+    password: str
+
+
+user_1 = Account(
+    address="0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266",
+    private_key="0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80",
+    password="Strong12345"
+)
+user_2 = Account(
+    address="0x70997970c51812dc3a010c7d01b50e0d17dc79c8",
+    private_key="0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d",
+    password="Strong12345"
+)
diff --git a/tests-functional/schema_builder.py b/tests-functional/schema_builder.py
index 97e70f21d..c77964a0b 100644
--- a/tests-functional/schema_builder.py
+++ b/tests-functional/schema_builder.py
@@ -1,11 +1,13 @@
 import json
 import os
-from conftest import option
+
 from genson import SchemaBuilder
 
+from conftest import option
+
 
 class CustomSchemaBuilder(SchemaBuilder):
-    
+
     def __init__(self, schema_name):
         super().__init__()
         self.path = f"{option.base_dir}/schemas/{schema_name}"
diff --git a/tests-functional/tests/test_accounts.py b/tests-functional/tests/test_accounts.py
index c974c5392..085669018 100644
--- a/tests-functional/tests/test_accounts.py
+++ b/tests-functional/tests/test_accounts.py
@@ -1,8 +1,7 @@
 import random
+
 import pytest
-import jsonschema
-import json
-from conftest import option
+
 from test_cases import StatusDTestCase
 
 
diff --git a/tests-functional/tests/test_cases.py b/tests-functional/tests/test_cases.py
index bee2c5cce..a6f60ac9f 100644
--- a/tests-functional/tests/test_cases.py
+++ b/tests-functional/tests/test_cases.py
@@ -1,16 +1,18 @@
 import json
+import logging
 import threading
 import time
-import pytest
-import logging
-
-from conftest import option, user_1, user_2
-from clients.signals import SignalClient
-from clients.status_backend import RpcClient, StatusBackend
 from collections import namedtuple
 
-class StatusDTestCase:
+import pytest
 
+from clients.signals import SignalClient
+from clients.status_backend import RpcClient
+from conftest import option
+from constants import user_1, user_2
+
+
+class StatusDTestCase:
     network_id = 31337
 
     def setup_method(self):
@@ -18,8 +20,9 @@ class StatusDTestCase:
             option.rpc_url_statusd
         )
 
+
 class WalletTestCase(StatusDTestCase):
-    
+
     def setup_method(self):
         super().setup_method()
 
@@ -47,7 +50,7 @@ class WalletTestCase(StatusDTestCase):
                 "fromAddress": user_1.address,
                 "fromAmount": "0x5af3107a4000",
                 "fromAsset": "ETH",
-                "type": 0, # MultiTransactionSend
+                "type": 0,  # MultiTransactionSend
                 "toAddress": user_2.address,
                 "toAsset": "ETH",
             },
@@ -69,17 +72,19 @@ class WalletTestCase(StatusDTestCase):
         self.rpc_client.verify_is_valid_json_rpc_response(response)
         try:
             tx_hash = response.json(
-        )["result"]["hashes"][str(self.network_id)][0]
+            )["result"]["hashes"][str(self.network_id)][0]
         except (KeyError, json.JSONDecodeError):
             raise Exception(response.content)
         return tx_hash
 
+
 class TransactionTestCase(WalletTestCase):
 
     def setup_method(self):
         super().setup_method()
         self.tx_hash = self.send_valid_multi_transaction()
 
+
 class EthRpcTestCase(WalletTestCase):
 
     @pytest.fixture(autouse=True, scope='class')
@@ -97,7 +102,7 @@ class EthRpcTestCase(WalletTestCase):
             block_hash = receipt.json()["result"]["blockHash"]
         except (KeyError, json.JSONDecodeError):
             raise Exception(receipt.content)
-        
+
         TxData = namedtuple("TxData", ["tx_hash", "block_number", "block_hash"])
         return TxData(tx_hash, block_number, block_hash)
 
@@ -126,8 +131,8 @@ class EthRpcTestCase(WalletTestCase):
             response = self.rpc_client.rpc_valid_request(method, params)
         return response.json()["result"]["tx"]
 
-class SignalTestCase(StatusDTestCase):
 
+class SignalTestCase(StatusDTestCase):
     await_signals = []
 
     def setup_method(self):
@@ -138,6 +143,7 @@ class SignalTestCase(StatusDTestCase):
         websocket_thread.daemon = True
         websocket_thread.start()
 
+
 class StatusBackendTestCase:
 
     def setup_method(self):
diff --git a/tests-functional/tests/test_eth_api.py b/tests-functional/tests/test_eth_api.py
index 3eec9d694..ef86d4302 100644
--- a/tests-functional/tests/test_eth_api.py
+++ b/tests-functional/tests/test_eth_api.py
@@ -1,24 +1,29 @@
 import pytest
-from conftest import option
+
 from test_cases import EthRpcTestCase
 
-def validateHeader(header, block_number, block_hash):
+
+def validate_header(header, block_number, block_hash):
     assert header["number"] == block_number
     assert header["hash"] == block_hash
 
-def validateBlock(block, block_number, block_hash, expected_tx_hash):
-    validateHeader(block["header"], block_number, block_hash)
+
+def validate_block(block, block_number, block_hash, expected_tx_hash):
+    validate_header(block["header"], block_number, block_hash)
     tx_hashes = [tx["hash"] for tx in block["transactions"]]
     assert expected_tx_hash in tx_hashes
 
-def validateTransaction(tx, tx_hash):
+
+def validate_transaction(tx, tx_hash):
     assert tx["tx"]["hash"] == tx_hash
 
-def validateReceipt(receipt, tx_hash, block_number, block_hash):
+
+def validate_receipt(receipt, tx_hash, block_number, block_hash):
     assert receipt["transactionHash"] == tx_hash
     assert receipt["blockNumber"] == block_number
     assert receipt["blockHash"] == block_hash
 
+
 @pytest.mark.rpc
 @pytest.mark.ethclient
 class TestEth(EthRpcTestCase):
@@ -30,25 +35,26 @@ class TestEth(EthRpcTestCase):
         self.rpc_client.rpc_valid_request("ethclient_suggestGasPrice", [self.network_id])
 
     def test_header_by_number(self, tx_data):
-        response = self.rpc_client.rpc_valid_request("ethclient_headerByNumber", [self.network_id, tx_data.block_number])
-        validateHeader(response.json()["result"], tx_data.block_number, tx_data.block_hash)
+        response = self.rpc_client.rpc_valid_request("ethclient_headerByNumber",
+                                                     [self.network_id, tx_data.block_number])
+        validate_header(response.json()["result"], tx_data.block_number, tx_data.block_hash)
 
     def test_block_by_number(self, tx_data):
         response = self.rpc_client.rpc_valid_request("ethclient_blockByNumber", [self.network_id, tx_data.block_number])
-        validateBlock(response.json()["result"], tx_data.block_number, tx_data.block_hash, tx_data.tx_hash)
+        validate_block(response.json()["result"], tx_data.block_number, tx_data.block_hash, tx_data.tx_hash)
 
     def test_header_by_hash(self, tx_data):
         response = self.rpc_client.rpc_valid_request("ethclient_headerByHash", [self.network_id, tx_data.block_hash])
-        validateHeader(response.json()["result"], tx_data.block_number, tx_data.block_hash)
+        validate_header(response.json()["result"], tx_data.block_number, tx_data.block_hash)
 
     def test_block_by_hash(self, tx_data):
         response = self.rpc_client.rpc_valid_request("ethclient_blockByHash", [self.network_id, tx_data.block_hash])
-        validateBlock(response.json()["result"], tx_data.block_number, tx_data.block_hash, tx_data.tx_hash)
+        validate_block(response.json()["result"], tx_data.block_number, tx_data.block_hash, tx_data.tx_hash)
 
     def test_transaction_by_hash(self, tx_data):
         response = self.rpc_client.rpc_valid_request("ethclient_transactionByHash", [self.network_id, tx_data.tx_hash])
-        validateTransaction(response.json()["result"], tx_data.tx_hash)
+        validate_transaction(response.json()["result"], tx_data.tx_hash)
 
     def test_transaction_receipt(self, tx_data):
         response = self.rpc_client.rpc_valid_request("ethclient_transactionReceipt", [self.network_id, tx_data.tx_hash])
-        validateReceipt(response.json()["result"], tx_data.tx_hash, tx_data.block_number, tx_data.block_hash)
+        validate_receipt(response.json()["result"], tx_data.tx_hash, tx_data.block_number, tx_data.block_hash)
diff --git a/tests-functional/tests/test_init_status_app.py b/tests-functional/tests/test_init_status_app.py
index 7d8465aa6..9afb3424c 100644
--- a/tests-functional/tests/test_init_status_app.py
+++ b/tests-functional/tests/test_init_status_app.py
@@ -1,7 +1,5 @@
 import pytest
-import threading
-from conftest import option
-from clients.status_backend import StatusBackend
+
 from test_cases import StatusBackendTestCase
 
 
@@ -9,33 +7,6 @@ from test_cases import StatusBackendTestCase
 @pytest.mark.rpc
 class TestInitialiseApp(StatusBackendTestCase):
 
-    @pytest.fixture(scope="session", autouse=True)
-    def init_status_backend(self):
-
-        await_signals = [
-
-            "mediaserver.started",
-            "node.started",
-            "node.ready",
-            "node.login",
-
-            "wallet",  # TODO: a test per event of a different type
-        ]
-
-        self.backend_client = StatusBackend(
-            await_signals
-        )
-
-        websocket_thread = threading.Thread(
-            target=self.backend_client._connect)
-        websocket_thread.daemon = True
-        websocket_thread.start()
-
-        self.backend_client.init_status_backend()
-        self.backend_client.create_account_and_login()
-
-        yield self.backend_client
-
     @pytest.mark.init
     def test_init_app(self, init_status_backend):
         # this test is going to fail on every call except first since status-backend will be already initialized
diff --git a/tests-functional/tests/test_router.py b/tests-functional/tests/test_router.py
index 85907e1c7..bc5008422 100644
--- a/tests-functional/tests/test_router.py
+++ b/tests-functional/tests/test_router.py
@@ -1,7 +1,9 @@
-import pytest
-import time
 import uuid
-from conftest import user_1, user_2, option
+
+import pytest
+
+from conftest import option
+from constants import user_1, user_2
 from test_cases import SignalTestCase
 
 
@@ -9,7 +11,6 @@ from test_cases import SignalTestCase
 @pytest.mark.transaction
 @pytest.mark.wallet
 class TestTransactionFromRoute(SignalTestCase):
-
     await_signals = [
         "wallet.suggested.routes",
         "wallet.router.sign-transactions",
diff --git a/tests-functional/tests/test_waku_rpc.py b/tests-functional/tests/test_waku_rpc.py
index d9fbbfe32..3ddf91f0c 100644
--- a/tests-functional/tests/test_waku_rpc.py
+++ b/tests-functional/tests/test_waku_rpc.py
@@ -1,13 +1,12 @@
 import random
-import pytest
-import jsonschema
-import json
 import time
-from conftest import option, user_1, user_2
-from test_cases import StatusDTestCase, TransactionTestCase
-from dataclasses import dataclass, field
-from typing import List, Optional
+from dataclasses import dataclass
+from typing import Optional
 
+import pytest
+
+from conftest import option
+from test_cases import StatusDTestCase
 
 
 @pytest.mark.skip("to be reworked via status-backend")
@@ -28,7 +27,6 @@ class TestRpc(StatusDTestCase):
 
 @pytest.mark.skip("to be reworked via status-backend")
 class TestRpcMessaging(StatusDTestCase):
-
     @dataclass
     class User:
         rpc_url: str
@@ -69,7 +67,7 @@ class TestRpcMessaging(StatusDTestCase):
                                 "message": f"contact request from {sender.chat_public_key}: sent at {time.time()}",
                             }
                         ],
-                        _id=99,
+                        request_id=99,
                         url=sender.rpc_url,
                     )
 
@@ -85,7 +83,7 @@ class TestRpcMessaging(StatusDTestCase):
                         "id": user.chat_id,
                     }
                 ],
-                _id=99,
+                request_id=99,
                 url=user.rpc_url,
             )
             self.rpc_client.verify_is_valid_json_rpc_response(response)
@@ -95,7 +93,7 @@ class TestRpcMessaging(StatusDTestCase):
             response = self.rpc_client.rpc_request(
                 method="wakuext_contacts",
                 params=[],
-                _id=99,
+                request_id=99,
                 url=user[0].rpc_url,
             )
             self.rpc_client.verify_is_valid_json_rpc_response(response)
diff --git a/tests-functional/tests/test_wallet_rpc.py b/tests-functional/tests/test_wallet_rpc.py
index 706a286ed..64e20041d 100644
--- a/tests-functional/tests/test_wallet_rpc.py
+++ b/tests-functional/tests/test_wallet_rpc.py
@@ -1,8 +1,10 @@
-import random
-import pytest
-import jsonschema
 import json
-from conftest import option, user_1, user_2
+import random
+
+import jsonschema
+import pytest
+
+from conftest import option
 from test_cases import StatusDTestCase, TransactionTestCase
 
 
@@ -37,11 +39,11 @@ class TestTransactionRpc(TransactionTestCase):
     def test_create_multi_transaction(self):
         response = self.wallet_create_multi_transaction()
         self.rpc_client.verify_is_valid_json_rpc_response(response)
-        
+
         # how to create schema:
         # from schema_builder import CustomSchemaBuilder
         # CustomSchemaBuilder(method).create_schema(response.json())
-        
+
         with open(f"{option.base_dir}/schemas/wallet_createMultiTransaction/transferTx_positive", "r") as schema:
             jsonschema.validate(instance=response.json(), schema=json.load(schema))
 
@@ -64,8 +66,10 @@ class TestTransactionRpc(TransactionTestCase):
         response = self.wallet_create_multi_transaction(**changed_values)
         self.rpc_client.verify_is_json_rpc_error(response)
         actual_error_code, actual_error_text = response.json()['error']['code'], response.json()['error']['message']
-        assert expected_error_code == actual_error_code, f"got code: {actual_error_code} instead of expected: {expected_error_code}"
-        assert expected_error_text in actual_error_text, f"got error: {actual_error_text} that does not include: {expected_error_text}"
+        assert expected_error_code == actual_error_code, \
+            f"got code: {actual_error_code} instead of expected: {expected_error_code}"
+        assert expected_error_text in actual_error_text, \
+            f"got error: {actual_error_text} that does not include: {expected_error_text}"
 
         self.rpc_client.verify_json_schema(response, "wallet_createMultiTransaction/transferTx_error")