diff --git a/jenkins.js b/jenkins.js
index 1c33f2a..099b983 100644
--- a/jenkins.js
+++ b/jenkins.js
@@ -13,6 +13,8 @@ const pkg = JSON.parse (fs.readFileSync ('package.json', 'utf-8'));
 fs.writeFileSync ('package.json', JSON.stringify (pkg, null, 2));
 
 child_process.execSync ('yarn lint', { stdio: 'inherit' });
+if (typeof pkg.scripts !=='undefined' && typeof pkg.scripts.test === 'string') 
+  child_process.execSync ('yarn test', { stdio: 'inherit' });
 
 child_process.exec ('git log -1 | grep \'\\[no publish\\]\'')
   .addListener ('exit', (code) => {