Fix model field default value generating in cases when this is the only one constraint #684

	name: Unit tests

	on: [ pull_request ]

	permissions:
	contents: read

	jobs:
	unit_tests:
	strategy:
	matrix:
	os: [ macos-latest, ubuntu-latest, windows-latest ]
	python-version: [ "3.8", "3.9", "3.10", "3.11", "3.12" ]

	runs-on: ${{matrix.os}}

	defaults:
	run:
	shell: bash

	steps:
	- name: Run Cimon (eBPF).
	if: runner.os == 'Linux'
	uses: cycodelabs/cimon-action@v0
	with:
	prevent: true
	allowed-hosts: >
	files.pythonhosted.org
	install.python-poetry.org
	pypi.org
	*.atproto.blue
	*.marshal.dev
	plc.directory

	- name: Checkout repository.
	uses: actions/checkout@v4

	- name: Set up Python.
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Setup Poetry.
	uses: snok/install-poetry@v1
	with:
	version: 1.5.1

	- name: Install dependencies.
	run: poetry install --without docs

	- name: Run Tests.
	run: poetry run pytest

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