abuild: Implement a checkretry optionawilfox/feature-15

This allows a test suite to be retried automatically in case of flaky or
unreliable tests upstream.  The default retry count is 5, but can be set
in abuild.conf with the variable `$ABUILD_RETRY_COUNT`.

Closes: #15

1 files changed, 16 insertions, 0 deletions

diff --git a/abuild.in b/abuild.in
index 72a29b2..076824f 100644
--- a/abuild.in
+++ b/abuild.in
@@ -1533,6 +1533,9 @@ build_abuildrepo() {
 	if options_has "checkroot"; then
 		_check=check_fakeroot
 	fi
+	if options_has "checkretry"; then
+		_check=check_retry
+	fi
 	if ! want_check; then
 		_check=true
 	fi
@@ -1787,6 +1790,19 @@ check_fakeroot() {
 	do_fakeroot "$abuild_path" $forceroot $color_opt $keep_build check
 }
 
+# wrap check() with retries
+check_retry() {
+	count=${ABUILD_RETRY_COUNT:=5}
+	(cd "$startdir";
+	try=1
+	while [ $try -le $count ]; do
+		msg "Test attempt $try of $count..."
+		check && exit 0
+		try=$(($try+1))
+		[ $try -gt $count ] && exit 1
+	done)
+}
+
 # build and package in fakeroot
 rootpkg() {
 	cd "$startdir"