add `ffi` cheatcode #1

	name: Test FFI

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	test:
	runs-on: macos-latest

	strategy:
	fail-fast: false
	matrix:
	include:
	- testname: "ffi:tests"

	steps:
	- uses: actions/checkout@v3
	with:
	submodules: recursive

	- name: Install Foundry
	uses: foundry-rs/foundry-toolchain@v1

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: "3.11"

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install pytest

	- name: Install Halmos
	run: pip install -e .

	- name: Run pytest
	run: pytest -v tests/test_halmos.py -k ${{ matrix.testname }} --halmos-options="--ffi -v -st --error-unknown --test-parallel --solver-parallel --solver-timeout-assertion 0"

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