diff --git a/__tests__/index.js b/__tests__/index.js
new file mode 100644
index 0000000..b5bd495
--- /dev/null
+++ b/__tests__/index.js
@@ -0,0 +1,9 @@
+import test from 'ava';
+
+import dnic from '../src';
+
+const VALID_DNI = '001-280592-0025N';
+
+test('shoud pass a valid dni', t => {
+  t.true(dnic(VALID_DNI));
+});