Go CI

Tapestry #38

	name: Go CI

	on:
	push:
	branches: [ main, master ]
	pull_request:
	branches: [ main, master ]

	jobs:
	ci:
	runs-on: ubuntu-latest

	steps:
	# --- Checkout code (Pinned to v4) ---
	- name: Checkout repository
	uses: actions/checkout@v4

	# --- Setup Go (Pinned to v6) ---
	- name: Set up Go
	uses: actions/setup-go@v6
	with:
	go-version: v1.25.1

	# --- Cache Go modules (Pinned to v4) ---
	- name: Cache Go modules
	uses: actions/cache@v4
	with:
	path: \|
	~/go/pkg/mod
	~/.cache/go-build
	key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
	restore-keys: \|
	${{ runner.os }}-go-

	# --- Download Dependencies (Recommended Practice) ---
	- name: Download Go modules
	run: go mod download

	# --- Run tests and collect coverage ---
	- name: Run tests with coverage
	run: \|
	# Ensure coverage.out is created and has content
	go test -v -coverprofile=coverage.out ./...
	go tool cover -func=coverage.out

	- name: Check coverage threshold
	run: \|
	# Extract total coverage percentage
	coverage=$(go tool cover -func=coverage.out \| grep total \| awk '{print substr($3, 1, length($3)-1)}')
	echo "Total coverage: $coverage%"

	# Define minimum threshold
	threshold=70.0

	# Compare and fail if below threshold
	awk -v c=$coverage -v t=$threshold 'BEGIN { if (c < t) {
	printf("::error::Coverage (%.1f%%) is below threshold (%.1f%%)\n", c, t);
	exit 1
	} }'

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