add crontab tests

src/apps.js

@@ -275,7 +275,7 @@ function parseCrontab(crontab) {
     for (let i = 0; i < lines.length; i++) {
         const line = lines[i].trim();
         if (!line || line.startsWith('#')) continue;
-        const parts = /(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(.*)/.exec(line);
+        const parts = /^(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(.+)$/.exec(line);
         if (!parts) throw new BoxError(BoxError.BAD_FIELD, `Invalid cron configuration at line ${i+1}`);
         const schedule = parts.slice(1, 6).join(' ');
         const command = parts[6];
@@ -286,7 +286,7 @@ function parseCrontab(crontab) {
             throw new BoxError(BoxError.BAD_FIELD, `Invalid cron pattern at line ${i+1}`);
         }
 
-        if (command.length === 0) throw new BoxError(BoxError.BAD_FIELD, `Invalid cron pattern. Command must not be empty at line ${i+1}`);
+        if (command.length === 0) throw new BoxError(BoxError.BAD_FIELD, `Invalid cron pattern. Command must not be empty at line ${i+1}`); // not possible with the regexp we have
 
         result.push({ schedule, command });
     }