Axe Module Fix & Sonar Fixes (#46)

<!-- markdownlint-disable-next-line first-line-heading -->
## Description

<!-- Describe your changes in detail. -->
This fixes a minor issue with the Axe module making the methods static,
and does some minor fixes addressed by SonarQube.

## Context

<!-- Why is this change required? What problem does it solve? -->
This is preventing the methods from being used as intended, and some
have minor formatting issues.

## Type of changes

<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply. -->

- [ ] Refactoring (non-breaking change)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would change existing
functionality)
- [x] Bug fix (non-breaking change which fixes an issue)

## Checklist

<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->

- [x] I am familiar with the [contributing
guidelines](https://github.com/nhs-england-tools/playwright-python-blueprint/blob/main/CONTRIBUTING.md)
- [x] I have followed the code style of the project
- [ ] I have added tests to cover my changes (where appropriate)
- [ ] I have updated the documentation accordingly
- [ ] This PR is a result of pair or mob programming

---

## Sensitive Information Declaration

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privacy, we kindly ask you to NOT including [PII (Personal Identifiable
Information) / PID (Personal Identifiable
Data)](https://digital.nhs.uk/data-and-information/keeping-data-safe-and-benefitting-the-public)
or any other sensitive data in this PR (Pull Request) and the codebase
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Author: davethepunkyone

utils/axe.py

@@ -16,6 +16,7 @@ class Axe():
     under test to identify any accessibility concerns.
     """
 
+    @staticmethod
     def run(
         page: Page,
         filename: str = "",
@@ -56,6 +57,7 @@ def run(
             json_report_generated=json_report_generated,
         )
 
+    @staticmethod
     def run_list(
         page: Page,
         page_list: list[str],

utils/date_time_utils.py

@@ -6,9 +6,6 @@ class DateTimeUtils:
     A utility class for doing common actions with datetimes.
     """
 
-    def __init__(self):
-        pass
-
     @staticmethod
     def current_datetime(format_date: str = "%d/%m/%Y %H:%M") -> str:
         """Gets the current datetime in the specified format.

utils/nhs_number_tools.py

@@ -8,8 +8,6 @@ class NHSNumberTools:
     """
     A utility class providing functionality around NHS numbers.
     """
-    def __init__(self) -> None:
-        pass
 
     @staticmethod
     def _nhs_number_checks(nhs_number: str) -> None:
@@ -21,7 +19,7 @@ def _nhs_number_checks(nhs_number: str) -> None:
         """
         if not nhs_number.isnumeric():
             raise NHSNumberToolsException("The NHS number provided ({}) is not numeric.".format(nhs_number))
-        if not len(nhs_number) == 10:
+        if len(nhs_number) != 10:
             raise NHSNumberToolsException("The NHS number provided ({}) is not 10 digits.".format(nhs_number))
 
     @staticmethod

utils/user_tools.py

@@ -26,7 +26,7 @@ def retrieve_user(user: str) -> dict:
         with open(USERS_FILE, 'r') as file:
             user_data = json.loads(file.read())
 
-        if not user in user_data:
+        if user not in user_data:
             raise UserToolsException(f"User [{user}] is not present in users.json")
 
         logger.debug(f"Returning user: {user_data[user]}")