Expands test coverage #100

	name: CI

	on:
	push:
	branches: [main, staging, trying]
	pull_request:
	branches: [main]

	env:
	CARGO_TERM_COLOR: always

	jobs:
	test:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	toolchain:
	# Don't forget to update the README when bumping MSRV.
	- 1.66.0
	- stable
	- beta
	- nightly
	os:
	- ubuntu-latest
	- macos-latest
	- windows-latest
	steps:
	- name: checkout
	uses: actions/checkout@v2
	- name: install toolchain
	uses: actions-rs/toolchain@v1
	with:
	toolchain: ${{ matrix.toolchain }}
	default: true
	profile: minimal
	- name: stable test without serde
	uses: actions-rs/cargo@v1
	if: matrix.toolchain != 'nightly'
	with:
	command: test
	# We just need to make sure we haven't broken it in some obvious way
	# either with or without serde enabled, so only test with serde on stable.
	- name: stable test with serde
	uses: actions-rs/cargo@v1
	if: matrix.toolchain == 'stable'
	with:
	command: test
	args: --features serde1
	# Make sure we haven't broken the const_fn feature.
	- name: stable test with const_fn
	uses: actions-rs/cargo@v1
	if: matrix.toolchain == 'stable'
	with:
	command: test
	args: --features const_fn
	- name: nightly test
	uses: actions-rs/cargo@v1
	if: matrix.toolchain == 'nightly'
	with:
	command: test
	args: --features nightly
	ci-success:
	name: ci
	if: ${{ success() }}
	needs:
	- test
	runs-on: ubuntu-20.04
	steps:
	- name: CI succeeded
	run: exit 0

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