diff --git a/.travis.yml b/.travis.yml
index 0a20062..49a494f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,7 @@
 language: node_js
 
+node_js: "8"
+
 before_script:
   - npm run setup
   - npm run build
diff --git a/test/basic.js b/test/basic.js
new file mode 100644
index 0000000..83d9c93
--- /dev/null
+++ b/test/basic.js
@@ -0,0 +1,12 @@
+const assert = require('assert');
+
+describe('Array', function()
+{
+    describe('#indexOf()', function ()
+    {
+        it('should return -1 when the value is not present', function ()
+        {
+            assert.equal([1, 2, 3].indexOf(4), -1);
+        });
+    });
+});
\ No newline at end of file