test: replace goacc with go test for coverage checks #247

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

	env:
	# go needs absolute directories, using the $HOME variable doesn't work here.
	GOCACHE: /home/runner/work/go/pkg/build
	GOPATH: /home/runner/work/go
	GO_VERSION: 1.23.2

	jobs:
	build:
	name: Build
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ env.GO_VERSION }}

	- name: Check out source
	uses: actions/checkout@v4

	- name: Build
	run: make build

	test-cover:
	name: Unit coverage
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ env.GO_VERSION }}

	- name: Check out source
	uses: actions/checkout@v4

	- name: Generate coverage info
	run: make unit-cover

	# Copy coverage files to the root directory to fix "Permission denied" error
	- name: Copy coverage files
	run: \|
	cp ./btcec/coverage.txt coverage-btcec.txt
	cp ./btcutil/coverage.txt coverage-btcutil.txt
	cp ./btcutil/psbt/coverage.txt coverage-btcutil-psbt.txt

	- name: Send coverage
	uses: coverallsapp/github-action@v2
	with:
	files: \|
	coverage.txt
	coverage-btcec.txt
	coverage-btcutil.txt
	coverage-btcutil-psbt.txt
	format: golang

	test-race:
	name: Unit race
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ env.GO_VERSION }}

	- name: Check out source
	uses: actions/checkout@v4

	- name: Test
	run: make unit-race

Provide feedback