build: customize package URLs in coverage tables inside PR comments

Author: Planeshifter

.github/workflows/run_tests_coverage.yml

@@ -178,6 +178,15 @@ jobs:
           else
             directories="${{ steps.changed-directories.outputs.directories }}"
           fi
+
+          # Append suffix to coverage base URL for PRs:
+          if [ -n "${{ github.event.pull_request.number }}" ]; then
+            PR_NUMBER=${{ github.event.pull_request.number }}
+            export COVERAGE_BASE_URL="https://coverage.stdlib.io/pr-${PR_NUMBER}"
+          else
+            export COVERAGE_BASE_URL="https://coverage.stdlib.io"
+          fi
+
           . "$GITHUB_WORKSPACE/.github/workflows/scripts/run_tests_coverage" "$directories"
         timeout-minutes: 30
 

.github/workflows/scripts/run_tests_coverage

@@ -42,6 +42,9 @@ set -o pipefail
 
 # VARIABLES #
 
+# Define the base URL for coverage reports, defaulting to 'https://coverage.stdlib.io':
+coverage_base_url="${COVERAGE_BASE_URL:-https://coverage.stdlib.io}"
+
 # Get the list of changed files:
 changed="$*"
 
@@ -159,11 +162,11 @@ main() {
 	for package in ${directories}; do
 		# For each package, extract coverage values from the respective coverage report:
 		pkg=`echo $package | sed -E 's/^.*stdlib\///'`
-		
+
 		if [ -f "lib/node_modules/@stdlib/${pkg}/binding.gyp" ]; then
 			NODE_ADDONS_PATTERN="${pkg}" make install-node-addons
 		fi
-		
+
 		make test-javascript-cov TESTS_FILTER=".*/${pkg}/test/.*"
 
 		if [ ! -f reports/coverage/lcov-report/${pkg}/lib/index.html ]; then
@@ -187,7 +190,7 @@ main() {
 		pkg_functions_cov_fraction=${pkg_cov_fractions[2]}
 		pkg_lines_cov_fraction=${pkg_cov_fractions[3]}
 
-		old_cov_report=$(curl -s --fail "https://coverage.stdlib.io/${pkg}/lib/index.html" 2>/dev/null || true)
+		old_cov_report=$(curl -s --fail "${coverage_base_url}/${pkg}/lib/index.html" 2>/dev/null || true)
 		if [ -z "$old_cov_report" ]; then
 			old_statements_cov=0
 			old_branches_cov=0
@@ -208,7 +211,7 @@ main() {
 
 		pkg_cov="| $pkg_statements_cov_fraction <br> $cov_change_statements | $pkg_branches_cov_fraction <br> $cov_change_branches | $pkg_functions_cov_fraction <br> $cov_change_functions | $pkg_lines_cov_fraction <br> $cov_change_lines |"
 
-		pkg_url="https://coverage.stdlib.io/${pkg}/index.html"
+		pkg_url="${coverage_base_url}/${pkg}/index.html"
 		pkg_link="<a href="$pkg_url">$pkg</a>"
 		coverage="$coverage\n| $pkg_link $pkg_cov"