Fix nil interface conversion error #150

	name: Test
	on:
	push:
	branches:
	- master
	pull_request:

	jobs:
	cleanup-runs:
	runs-on: ubuntu-latest
	steps:
	- uses: rokroskar/workflow-run-cleanup-action@master
	env:
	GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
	if: "!startsWith(github.ref, 'refs/tags/') && github.ref != 'refs/heads/master'"

	Test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-go@v3
	with:
	go-version: '1.18' # The Go version to download (if necessary) and use.

	# Some tests, notably TestRandomOperations, are extremely slow in CI
	# with the race detector enabled, so we use -short when -race is
	# enabled to reduce the number of slow tests, and then run without
	# -short with -race disabled for a larger test set. The same tests
	# are run, just with smaller data sets.
	#
	# We also do a 32-bit run. Even though this is executed on a 64-bit
	# system, it will use 32-bit instructions and semantics (e.g. 32-bit
	# integer overflow).
	- name: test & coverage report creation
	run: \|
	go test ./... -mod=readonly -timeout 5m -short -race -coverprofile=coverage.txt -covermode=atomic
	go test ./... -mod=readonly -timeout 5m
	GOARCH=386 go test ./... -mod=readonly -timeout 5m
	- uses: codecov/[email protected]
	with:
	file: ./coverage.txt
	fail_ci_if_error: false

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