test: Add GitHub Actions test support

Authored-By: Jean-Philippe Evrard <open-source@a.spamming.party>
Co-Authored-By: James Shubin <james@shubin.ca>
Signed-off-by: Joe Groocock <me@frebib.net>

test/util.sh

@@ -22,12 +22,14 @@ TIMEOUT="$timeout --kill-after=360s --signal=QUIT 300s"
 
 in_ci() {
 	if [ $# -eq 0 ]; then
-		test -n "$CI" -o -n "$TRAVIS" -o -n "$JENKINS_URL"
+		test -n "$CI" -o -n "$GITHUB_ACTION" -o -n "$TRAVIS" -o -n "$JENKINS_URL"
 		return $?
 	fi
 
 	for var in "$@"; do
 		case "$var" in
+		github)
+			test -n "$GITHUB_ACTION" && return 0;;
 		travis)
 			test "$TRAVIS" = "true" && return 0;;
 		jenkins)
@@ -40,7 +42,11 @@ in_ci() {
 }
 
 fail_test() {
-	echo -e "FAIL: $@"
+	if in_ci github; then
+		echo "::error::$@"
+	else
+		echo -e "FAIL: $@"
+	fi
 	exit 1
 }
 
@@ -53,10 +59,14 @@ function run-test() {
 fold_start() {
 	if in_ci travis; then
 		echo -e "travis_fold:start:$1\033[33;1m${@:2}\033[0m"
+	elif in_ci github; then
+		echo "::group::$@"
 	fi
 }
 fold_end() {
 	if in_ci travis; then
 		echo -e "\ntravis_fold:end:$1\r"
+	elif in_ci github; then
+		echo "::endgroup::"
 	fi
 }