Refactor test #650

	name: Run tests
	on: [push, pull_request]

	jobs:
	test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name: Install Rust toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: stable

	- name: Install SDL2
	run: \|
	sudo add-apt-repository -y "deb http://archive.ubuntu.com/ubuntu `lsb_release -sc` main universe restricted multiverse"
	sudo apt-get update -y -qq
	sudo apt-get install libsdl2-dev

	- name: Build VM
	run: cargo build

	- name: Release build
	run: cargo build --release

	- name: Test VM
	run: RUST_BACKTRACE=1 cargo test

	- name: Test plush command-line arguments
	working-directory: .
	run: \|
	cargo run tests/empty.psh
	cargo run tests/fact.psh
	cargo run -- --no-exec examples/raytracer.psh
	cargo run -- --eval ''
	cargo run -- --eval '$println(1);'
	cargo run examples/command_args.psh
	cargo run examples/command_args.psh foo bar

	# We do this to verify that the benchmarks can all run without crashing
	# The benchmarks are designed to run fairly quickly, less than 5 seconds each
	- name: Run benchmarks
	run: ./run_benchmarks.sh

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