Add restrictor for import_preview #1232

	name: Test
	on: [pull_request]
	jobs:
	test:
	name: Test
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: '1.21'

	- name: Check out code into the Go module directory
	uses: actions/checkout@v4

	- name: go fmt
	run: test -z $(gofmt -l .)

	- name: go vet
	run: go vet ./...

	- name: golint
	run: go install golang.org/x/lint/golint@latest && golint -set_exit_status ./...

	- name: test
	run: go test -timeout 30s -race ./...

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