Use pytest.ini_options.pythonpath instead of modifying sys.path in test modules

[dwr-zroy]

Description

This PR modifies pyproject.toml and sets a pytest setting to automatically add .\src to the PYTHONPATH. This alleviates the need to modify sys.path when writing test modules.

Tests are passing 100% on my Windows 11 machine, in a Python 3.12 environment. Not sure if there is a larger testing matrix that should be run.

Code Changes

Before

pyproject.toml

[tool.pytest.ini_options]
log_cli = true
log_cli_level = 'INFO'
testpaths = ["tests"]

test_basics.py

"""Pytest module."""

import unittest
import os
import sys

sys.path.append(r'src')
sys.path.append(os.path.dirname(__file__))
from file_manager import FileManager
from hecdss import Catalog, HecDss
from datetime import datetime

...

After

pyproject.toml

[tool.pytest.ini_options]
log_cli = true
log_cli_level = 'INFO'
testpaths = ["tests"]
pythonpath = "./src"

test_basics.py

"""Pytest module."""

import unittest
from datetime import datetime

from file_manager import FileManager

from hecdss import Catalog, HecDss

...

[oskarhurst]

Hi @dwr-zroy, Thank you for the PR this looks like a good addition to simplify the project.