Improve tests with syrupy and fixture (#425)

* Add syrupy package to Poetry

* Add fixture and update the tests for syrupy

README.md

@@ -135,6 +135,12 @@ To run just the Python tests:
 poetry run pytest
 ```
 
+To update the [syrupy](https://github.com/tophat/syrupy) snapshot tests:
+
+```bash
+poetry run pytest --snapshot-update
+```
+
 ## License
 
 MIT License

pyproject.toml

@@ -36,10 +36,10 @@ pytz = "^2023.3"
 Changelog = "https://github.com/klaasnicolaas/python-odp-gent/releases"
 
 [tool.poetry.group.dev.dependencies]
-ruff = "0.3.7"
 aresponses = "3.0.0"
 blacken-docs = "1.16.0"
 codespell = "2.2.6"
+covdefaults = "2.3.0"
 coverage = {version = "7.4.4", extras = ["toml"]}
 mypy = "1.9.0"
 pre-commit = "3.7.0"
@@ -48,9 +48,10 @@ pylint = "3.1.0"
 pytest = "8.1.1"
 pytest-asyncio = "0.23.6"
 pytest-cov = "5.0.0"
-yamllint = "1.35.1"
-covdefaults = "2.3.0"
+ruff = "0.3.7"
+syrupy = "4.6.1"
 types-pytz = "2024.1.0.20240203"
+yamllint = "1.35.1"
 
 [tool.coverage.run]
 plugins = ["covdefaults"]
@@ -94,6 +95,9 @@ warn_return_any = true
 warn_unused_configs = true
 warn_unused_ignores = true
 
+[tool.pylint.MASTER]
+ignore = ["tests"]
+
 [tool.pylint.BASIC]
 good-names = ["_", "ex", "fp", "i", "id", "j", "k", "on", "Run", "T"]