diff --git a/tests/conftest.py b/tests/conftest.py
index 44d09f7..97f534b 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -10,6 +10,8 @@
 # copyright notice, and modified files need to carry a notice indicating
 # that they have been altered from the originals.
 
+"""Fixtures used on the tests"""
+
 import logging
 import pytest
 import numpy as np
diff --git a/tests/parametrize_functions.py b/tests/parametrize_functions.py
index 17125a6..58fc8f0 100644
--- a/tests/parametrize_functions.py
+++ b/tests/parametrize_functions.py
@@ -10,6 +10,8 @@
 # copyright notice, and modified files need to carry a notice indicating
 # that they have been altered from the originals.
 
+"""Common parametrize functions. The ones that are only used in one file are on that file"""
+
 import pytest
 
 
diff --git a/tests/test_ai_routing_pass.py b/tests/test_ai_routing_pass.py
index 2f09a21..305ad13 100644
--- a/tests/test_ai_routing_pass.py
+++ b/tests/test_ai_routing_pass.py
@@ -10,9 +10,10 @@
 # copyright notice, and modified files need to carry a notice indicating
 # that they have been altered from the originals.
 
-"""Unit-testing routing_ai"""
+"""Tests for the ai routing pass"""
 
 import pytest
+
 from qiskit import QuantumCircuit
 from qiskit.transpiler import PassManager
 from qiskit.transpiler.exceptions import TranspilerError
diff --git a/tests/test_ai_synthesis_pass.py b/tests/test_ai_synthesis_pass.py
index af7ffa4..507144a 100644
--- a/tests/test_ai_synthesis_pass.py
+++ b/tests/test_ai_synthesis_pass.py
@@ -10,9 +10,12 @@
 # copyright notice, and modified files need to carry a notice indicating
 # that they have been altered from the originals.
 
-"""Unit-testing ai clifford syhtesis for both local and cloud modes"""
+"""Tests for the ai synthesis pass"""
+
 import pytest
+
 from qiskit import QuantumCircuit
+
 from qiskit.transpiler import PassManager
 
 from qiskit_ibm_transpiler.ai.collection import (
diff --git a/tests/test_collection_pass.py b/tests/test_collection_pass.py
index a793a03..bdcadfc 100644
--- a/tests/test_collection_pass.py
+++ b/tests/test_collection_pass.py
@@ -10,17 +10,20 @@
 # copyright notice, and modified files need to carry a notice indicating
 # that they have been altered from the originals.
 
-"""Unit-testing collection"""
+"""Tests for the collector pass"""
+
 import pytest
 
 from qiskit import QuantumCircuit
 from qiskit.transpiler import PassManager
 from qiskit.transpiler.preset_passmanagers import generate_preset_pass_manager
 
-from qiskit_ibm_transpiler.ai.collection import CollectPermutations
-from qiskit_ibm_transpiler.ai.collection import CollectLinearFunctions
-from qiskit_ibm_transpiler.ai.collection import CollectCliffords
-from qiskit_ibm_transpiler.ai.collection import CollectPauliNetworks
+from qiskit_ibm_transpiler.ai.collection import (
+    CollectPermutations,
+    CollectLinearFunctions,
+    CollectCliffords,
+    CollectPauliNetworks,
+)
 
 
 def create_linear_circuit(n_qubits, gates):