Extracted some logic from `FractionAtom.CreateBoxCore` into its own methods #608

	name: Main
	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	schedule:
	- cron: '0 0 * * 6'

	workflow_dispatch:

	jobs:
	main:
	strategy:
	fail-fast: false
	matrix:
	config:
	- name: 'macos'
	image: 'macos-12'
	testProject: 'src/AvaloniaMath.ApiTest'
	- name: 'linux'
	image: 'ubuntu-22.04'
	testProject: 'src/AvaloniaMath.ApiTest'
	- name: 'windows'
	image: 'windows-2022'
	runAllTests: 'true'

	name: main.${{ matrix.config.name }}
	runs-on: ${{ matrix.config.image }}

	env:
	DOTNET_NOLOGO: 1
	DOTNET_CLI_TELEMETRY_OPTOUT: 1
	NUGET_PACKAGES: ${{ github.workspace }}/.github/nuget-packages

	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Verify encoding
	shell: pwsh
	run: ./scripts/verify-encoding.ps1

	- name: NuGet cache
	uses: actions/cache@v3
	with:
	path: ${{ env.NUGET_PACKAGES }}
	key: ${{ runner.os }}.nuget.${{ hashFiles('*/.csproj', '*/.fsproj') }}

	- name: Set up .NET SDK
	uses: actions/setup-dotnet@v3
	with:
	dotnet-version: \|
	6.0.x
	7.0.x

	- name: Build
	run: dotnet build

	- name: Run all tests
	run: dotnet test
	if: ${{ matrix.config.runAllTests == 'true' }}

	- name: Run portable tests
	run: dotnet test ${{ matrix.config.testProject }}
	if: ${{ matrix.config.runAllTests != 'true' }}

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