Fixed all pytest warnings at the end of a test run (#73)

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## Description

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Resolving pytest warnings by adding markers in pytest.ini and marking
classes beginning with test as non-tests

## Context

<!-- Why is this change required? What problem does it solve? -->
Resolved pytest warnings at the end of a test run.

## Type of changes

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the boxes that apply. -->

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

## Checklist

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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

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Author: adrianoaru-nhs

pages/datasets/investigation_dataset_page.py

@@ -242,6 +242,7 @@ class PractitionerOptions(StrEnum):
 
 class TestingClinicianOptions(StrEnum):
     """Enum for testing clinician options"""
+    __test__ = False
 
     BORROWING_PROPERTY = "886"
     CLAUSE_CHARTING = "918"

pytest.ini

@@ -34,5 +34,6 @@ markers =
     compartment3: only for compartment 3
     compartment4: only for compartment 4
     compartment5: only for compartment 5
+    compartment6: only for compartment 6
     compartment1_plan_creation: to run the plan creation for compartment 1
     vpn_required: for tests that require a VPN connection