diff --git a/test.sh b/test.sh
index baa9cf5..e64af44 100755
--- a/test.sh
+++ b/test.sh
@@ -11,12 +11,12 @@ OUTDIR=$(mktemp --directory)
 trap "rm -rf '$OUTDIR'" EXIT
 
 run_solution() {
-	if [ -d "$solution" ]; then
-		if [ -f "$solution/Cargo.toml" ]; then
+	if [[ -d "$solution" ]]; then
+		if [[ -f "$solution/Cargo.toml" ]]; then
 			cargo run --quiet --manifest-path "$solution/Cargo.toml" < "$input"
 		else
 			runfile=$solution/run.sh
-			[ -f "$runfile" ] || { echo "Error: $runfile not found" >&2; exit 1; }
+			[[ -f "$runfile" ]] || { echo "Error: $runfile not found" >&2; exit 1; }
 			"$runfile" "$input"
 		fi
 	else
@@ -49,6 +49,9 @@ do_day() {
 			example*)
 				echo SKIP
 				continue
+				;;
+			*)
+				;;
 		esac
 
 		solution_output=$OUTDIR/${year}_$day.out