add test for unique chainID and family #310

	name: Go - Build and test

	on: [ push ]

	jobs:
	build-test:
	name: Build and test
	runs-on: ubuntu-latest
	steps:
	- name: Check out code into the Go module directory
	uses: actions/checkout@v2
	- name: Set up Go
	uses: actions/setup-go@v3
	with:
	go-version-file: "go.mod"
	cache: false
	- name: Build
	run: go build -v ./...
	- name: Make sure generated files are updated
	run: \|
	if go generate \| grep -q 'no changes detected'; then
	exit 0;
	fi
	exit 1;
	- name: Test
	run: go test -v ./...

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