diff --git a/test/index.test.js b/test/index.test.js
index 89ee6d7..c06752e 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -24,4 +24,9 @@ test('test fail placing', () => {
   } catch (err) {
     expect(err).toBe('Failed to place nodes');
   }
+});
+
+test('no data', () => {
+  const res = faDiagrams.compute({});
+  expect(res).toEqual('<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 0 0" width="0" height="0"></svg>');
 });
\ No newline at end of file