add fail test

Author: zholobovan

tests/test-fail.js

@@ -0,0 +1,12 @@
+var assert = require('assert');
+
+describe('String', function () {
+    describe('#indexOf', function () {
+        it('should return -1 when the substring is not present', function () {
+            var myString = 'test';
+
+            assert.equal(-1, myString.indexOf('x'));
+            assert.equal(-1, myString.indexOf('e'));
+        });
+    });
+});