add coverage to GH actions workflow #1

	name: Code checks

	on:
	push:
	branches: [ "master" ]
	pull_request:
	branches: [ "master" ]

	env:
	CARGO_TERM_COLOR: always

	jobs:
	lint:
	runs-on: ubuntu-latest
	timeout-minutes: 10
	steps:
	- uses: actions/checkout@v4
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	components: clippy
	- name: Lint
	run: cargo clippy --lib -- -D warnings

	format:
	runs-on: ubuntu-latest
	timeout-minutes: 10
	steps:
	- uses: actions/checkout@v4
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	components: rustfmt
	- name: Format
	run: cargo fmt --all -- --check

	test_and_coverage:
	runs-on: ubuntu-latest

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

	- name: Setup rust toolchain
	uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	components: llvm-tools-preview
	toolchain: stable

	- name: Install llvm-cov
	env:
	LLVM_COV_RELEASES: https://github.com/taiki-e/cargo-llvm-cov/releases
	run: \|
	host=$(rustc -Vv \| grep host \| sed 's/host: //')
	curl -fsSL $LLVM_COV_RELEASES/latest/download/cargo-llvm-cov-$host.tar.gz \| tar xzf - -C "$HOME/.cargo/bin"

	- name: Generate coverage report
	run: cargo llvm-cov --lcov --output-path coverage.lcov

	- name: Upload coverage report
	uses: codecov/codecov-action@v4
	with:
	fail_ci_if_error: true
	file: coverage.lcov
	flags: rust
	token: ${{ secrets.CODECOV_TOKEN }}

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